Screw Fastening Systems
156 Hilti, Inc. (US) 1-800-879-8000 | www.us.hilti.com I en español 1-800-879-5000 I Hilti (Canada) Corp. 1-800-363-4458 I www.hilti.ca I Direct Fastening Technical Guide 2015
3.6.1.1 Drill Point Selection
Bottom Material to be Drilled
Bottom Material to be Drilled
Total Thickness to be Drilled
Larger than Screw Threads
Bottom Material to be Drilled
Total Thickness to be Drilled
Bottom Material to be Drilled
Total Thickness to be Drilled
Drill
Flute
Drill Flute
The length of the drill flute determines the metal thickness that can be drilled. The flute itself provides
a channel for chip removal during
Point
Length
Point Length The unthreaded section from the point to the first
thread should be long enough to assure
the drilling action is complete before the
Winged
Reamer
Drilling Through
Wood to Metal
If your application calls for drilling through wood over
1/2" thick, a clearance hole is required.
Select a fastener with
drilling action. If it becomes completely embedded in material, drill chips will be trapped in the flute and cutting action will cease. This will cause the point to burn up or break.
first thread engages the drilled metal. Screw threads advance at a rate of up to ten times faster than the drill flute can remove metal. All drilling therefore should be complete before threads begin to form.
breakaway wings for this type of job. The wings will ream a clearance hole and break-off when they contact metal surface (minimum metal thickness
0.06") to be drilled.
Drilling Capacity – Material Thickness Recommendations (Steel to Steel)
Note: Meets or exceeds ASTM C1513. Shaded areas represent total thickness of all steel including any void spaces between layers.
Screw Fastening Systems
Self-Drilling Screw Fastener Selection and Design 3.6.1
Metal Gauge
Fraction to Decimal
Thread Length
Always choose a fastener with sufficient threads to fully engage in the base metal. For attachments to 1/4" base steel, a self-drilling screw should have at least 1/4" of threads. It is helpful, but not critical, that the threads also engage in the material being fastened. The head of the fastener provides
the bearing force for the material being fastened, while the threads provide the clamping force in the base material.
Clamping
Material Being Fastened
Base Material
Threading
|
Fraction (in.) |
Decimal
Equivalent (in.)
|
1/64
|
|
1/32
|
|
3/64
|
|
1/16
|
|
5/64
|
|
3/32
|
|
7/64
|
|
1/8
|
|
9/64
|
|
5/32
|
|
3/16
|
|
7/32
|
|
1/4
|
Screw Diameter
Thread Pitch
The thickness of material being fastened and diameter of the screw determine the type of thread pitch to be used.
In general, the thinner the fastened materials, the fewer the number of threads. The thicker the material, the greater
the number of threads. This principle is due to two primary methods of thread engagement/holding power: Clamping
and Threading. In light gauge metal, the materials are actually being clamped together by the upper and lower threads.
|
Gauge |
Aluminum
Metal
|
Sheet |
|
(Approx. Thickness
in decimal parts of an inch)
|
||
|
8
|
0.1644 | |
|
9
|
0.1495 | |
| 0.1345 | ||
| 0.1196 | ||
| 0.1046 | ||
| 0.0897 | ||
| 0.0747 | ||
| 0.0673 | ||
| 0.0598 | ||
| 0.0538 | ||
| 0.0474 | ||
| 0.0418 | ||
| 0.0358 | ||
| 0.0329 | ||
| 0.0295 | ||
| 0.0269 | ||
| 0.0239 | ||
| 0.0209 | ||
| 0.0179 | ||
| 0.0164 | ||
| 0.0149 | ||
The importance of IBC compliant screws.
ICC-ES ESR-2196 provides IBC recognition of Hilti’s
Self-Drilling Screw Fasteners. This recognition was based on a comprehensive and rigorous independent evaluation of Hilti’s Self-Drilling Screw Fasteners to the latest IBC code requirements in ICC-ES AC118 Acceptance Criteria for Self-Tapping Screw Fasteners, as well as the AISI S904 and AISI S905 test standards.
AC118 provides the IBC code recognition and quality assurance for screw fasteners. ICC-ES ESR-2196 recognizes many types of Hilti screws for the most common applications including CFS connections, gypsum to CFS, etc. Specifically, ESR-2196 covers the HWH, HHWH, PPH, PPFH, PBH, PWH, PTH, PPCH, TPCH and PFTH head style Hilti screws.
To ensure IBC compliance of screws on your next project, reference ESR-2196.
|
|
Decimal
Equivalent (in.)
|
#6
|
|
#7
|
|
#8
|
|
#10
|
|
#12
|
|
1/4
|
|
5/16
|
Thinner base material requires a coarser thread pitch to assure proper clamping. The thicker the material, the finer the threads must be. In very thick metal (3/8" to 1/2" thick), a fine thread
is advisable. This will allow the thread to tap into the base material with less installation torque than a coarse thread.
Hilti, Inc. (US) 1-800-879-8000 | www.us.hilti.com I en español 1-800-879-5000 I Hilti (Canada) Corp. 1-800-363-4458 I www.hilti.ca I Direct Fastening Technical Guide 2015 157
3.6.1 Self-Drilling Screw Fastener Selection and Design
3.6.1.3 Head Style Selection
HWH (HHWH) (High) Hex Washer Head : Washer face provides a bearing surface for the driving sockets.
PPH (PPFH) Phillips Pan (Framing) Head:
Conventional head for general applications and provides low profile fastening.
PFH
Phillips Flat Head: Used primarily in wood to countersink
and seat flush without
splintering the wood.
PWH
Phillips Wafer Head: Large head provides the bearing surface necessary to seat flush in soft materials.
PBH
Phillips Bugle Head: Used primarily for fastening drywall, plywood or insulation board to steel studs.
PTH (MPTH) (Modified) Phillips Truss Head: Large head and low profile provides surface area needed to attach wire lath to metal stud.
PPCH
Phillips Pancake Conventional Head: Head for general applications and provides low and flat profile.
PFTH
Phillips Flat Truss Head: Lowest profile head available for attaching metal
to metal.
PFHUC
Pancake Framing Head Undercut: Used for countersinking where a full head taper would cause
stand-off of the screw.
SHWH
Slotted Hex Washer Head: Hex washer head with slot in center to provide additional drive connection.
3.6.1.4 Sealing Criteria
Sealing washer screws offer weather resistant fastenings where moisture or condensation is a factor. The washer helps seal the hole to help prevent moisture from dripping into the fastener threads from the fastened material side, reducing corrosive build-up. As added protection against corrosion,
all sealing washer screws come standard with Kwik-Cote coating. The torque control or depth gauge of the electric screwdrivers help ensure that the optimal seal is applied (Reference Section 3.6.1.7).
3.6.1.5 Length Selection
Length of the screw (L)
Depending on the screwhead, there are two different ways to measure the overall length of a screw.
For HWH/HHWH, PPH, PTH, PFTH, SHWH and PPCH screws, the overall length is measured from the bottom of the washer under the head to the point of the screw.
For PWH, PFH, PBH and PFHUC screws, the overall length is measured from the top of the head to the point of the screw.
MMFT
L
The maximum total thickness (MT) for all screws is the length of the threads reduced by the first three threads (protruding past the back-side of the base material). See drawings above and below.
The maximum total thickness (MT) describes the maximum thickness of all attachments to be fastened plus the
base material.
158 Hilti, Inc. (US) 1-800-879-8000 | www.us.hilti.com I en español 1-800-879-5000 I Hilti (Canada) Corp. 1-800-363-4458 I www.hilti.ca I Direct Fastening Technical Guide 2015
Screw Fastening Systems
Self-Drilling Screw Fastener Selection and Design 3.6.1
3.6.1.6 Corrosion Resistance Guidelines
Self-Drilling Screw Fastener Selection Guidelines1,2,3,6,7
|
Environment |
Low
Indoor - Dry:
no moisture exposure
|
Medium
Indoor and Exterior - Dry:
minimal moisture exposure
|
High
Indoor and Exterior - Wet: Heavy industrial or coastal areas with high prolonged moisture levels but no direct exposure to chlorides, and average temperatures
below 86 °F (30 °C).
|
|||
|
Connection
Type
|
Untreated Lumber-to-steel, steel-to-steel, gypsum-to-steel applications
|
Pressure-Treated4 or Fire-Retardant Lumber-to-steel; aluminum-to-steel; dissimilar metals
|
Untreated Lumber-to-steel, steel-to-steel, gypsum-to-steel applications; cement
board-to-steel
|
Pressure-Treated4 or Fire-Retardant Lumber-to-steel; aluminum-to-steel; dissimilar metals
|
Untreated Lumber-to-steel, steel-to-steel, gypsum-to-steel applications
|
Pressure-Treated4 or Fire-Retardant Lumber-to-steel; aluminum-to-steel; dissimilar metals
|
|
Screw Fastener Descriptions
|
Hardened Carbon Steel fasteners with electro-galvanized (min. 5 - 13 microns), black phosphate
coatings
|
Carbon Steel, two-step heat treated fasteners with Kwik-Cote coating
|
Hardened Carbon Steel fasteners with Kwik-Cote coating
|
Carbon Steel, two-step heat treated fasteners with Kwik-Cote coating
|
300 series5
stainless steel fastener
|
|
|
Screw Fastener Designation
|
Hilti Zinc
Plated Screws
|
Hilti
Kwik-Flex
|
Hilti
Self-Drilling Screws with Kwik-Cote
or Kwik-Seal
Designation
|
Hilti
Kwik-Flex
|
Hilti
Bi-Metal
Kwik-Flex
|
|
|
Product Technical Guide Section
|
Section
3.6.2 or 3.6.3
|
Section
3.6.4
|
Section
3.6.2
|
Section
3.6.4
|
Section
3.6.5
|
|
2 Guidelines based on fastener coating / material resistance to environmental corrosion (commonly called rusting) and fastener hardening process / resistance to hydrogen assisted stress corrosion cracking (HASCC). Evaluate site conditions which may affect these guidelines, such as: corrosive agents other than those listed; expected service life; other (non-environmental) types of corrosion, etc.
3 In highly corrosive environments (such as direct exposure to chlorides with average temperatures above 86 °F (30 °C)) it is generally recommended that a Highly
4 Pressure treated lumber refers to lumber such as SBX/DOT, Zinc borated ACQ, CA-B, CBA-A treated lumber.
6 The decision as to which fastener optimally meets the demands of a specific application is ultimately the judgment of the Engineer of Record or other responsible
7 Reference Section 2.3.3.1 for more information on corrosion resistance.
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3.6.1 Self-Drilling Screw Fastener Selection and Design
3.6.1.7 Hilti Screw Fastener Installation Instructions*
It is essential that proper rpm, setting depth and torque be utilized when installing Hilti screws.
Install self-drilling screws perpendicular to the work surface. The self-drilling feature of the screw will drill a hole completely through the base material before tapping the threads. Do not apply excessive pressure. Too much pressure will slow the speed of the screwdriver, increasing the installation time and possibly leading to drill tip failure. The variable speed motors of Hilti screwdrivers enable the operator to start the screw in
a precise position and drive it at the speed best suited for the application. Below, two recommended tools are discussed in detail. The tables below provide additional suggested tools as well as common socket and bit sizes.
Common Socket and Bit Sizes
The Hilti SD 2500 siding edition features a 2,500 rpm motor for fastening self-drilling screws in steel up to 1/4" (6 mm) thick. There is a depth gauge on the front of the tool for correct
depth setting of screws.
The Hilti ST 1800 heavy duty torque adjustable screwdriver features a 1,800 rpm for fastening self-drilling screws in steel up 1/2" (12 mm) thick. There is a depth gauge on the front of the tool for correct depth setting of screws. There is also an
18 position adjustable torque clutch for correct torque release setting of screws. By avoiding overdriving, proper torque adjustment will deliver consistent fastening quality.
The ST 1800 may also be operated with the SDT 5 for a stand-up decking system to fasten steel deck.
Please reference the table on torque considerations below for more information on proper installation of Hilti
screw fasteners.
* These are abbreviated instructions which may vary by application.
ALWAYS review/follow the instructions accompanying the product.
Screw
Size
|
Setter Size |
|
#8
|
1/4"
|
2
|
#10
|
5/16"
|
2
|
#12
|
5/16"
|
3
|
1/4"
|
3/8"
|
3
|
|
|
These include, but are not limited to, typical applications involving interior drywall fastening, exterior sheathing, metal framing, HVAC duct and plywood to metal. |
These include, but are not limited to, typical applications involving metal decking (both frame and sidelap), metal siding (both frame and sidelap), exterior façade and window glazing as well as any application where stripping of the base material may occur.
Any application involving sealing washers requires a depth gauge or torque clutch to help ensure that an optimal seal is achieved.
|
| Considerations1 |
These applications may not require a corded or cordless screwdriver that features either an adjustable torque clutch or a properly adjusted depth gauge. This is because the applications are considered non-structural and/or possess sufficient redundancy in fastening points that any impact of over-driving may be sufficiently mitigated. |
These applications must utilize a corded or cordless screwdriver that features either an adjustable torque clutch or a properly adjusted depth gauge in order to ensure consistent fastening and achieve published connection capacities. This is because the applications are considered structural elements of the design. Over-driving may cause connection failures or fastener failures that possibly compromise the integrity of the connection. |
|
Suggested
Tools2
|
Corded: SD 2500, SD 4500, ST 1800, SD 2500 Siding Edition, SI 100 Cordless: SF/H 14, SF/H 18, SD 4500-A, SID 144, SIW 144 |
Corded: SD 2500, SD 4500, ST 1800, SD 2500 Siding Edition Cordless: SF/H 14, SF/H 18, SD 4500-A Do not use impact drivers. |
2 All published screw fastening connection capacities were developed using corded or cordless screwdriver tools with adjustable torque clutches. Over-driving a screw fastener can cause a connection failure in lighter gauge and lower strength steel base materials (the threads tapping the base material are stripped by excessive torque) or a fastener failure in heavier gauge and higher strength steel base materials (the screw is damaged or sheared by excessive torque). This type of damage is not always visually detectable. Regardless of the tool or its torque setting, test fastenings should always be performed to verify the appropriate torque is being applied.
160 Hilti, Inc. (US) 1-800-879-8000 | www.us.hilti.com I en español 1-800-879-5000 I Hilti (Canada) Corp. 1-800-363-4458 I www.hilti.ca I Direct Fastening Technical Guide 2015
3.6.2.1 Product Description
Self-Drilling Screws 3.6.2
Hilti self-drilling screws are designed to drill their own hole in steel base materials up to 1/2" thick. These screws are available in a variety of head styles, thread lengths and drill-flute lengths for screw diameters #6 through 1/4". Hilti self-drilling screws meet ASTM C1513, ASTM C954 and SAE J78 standards,
as applicable.
Product Features:
• Hex head for metal-to-metal
• Flush head for wood-to-metal
• For metal from 0.035" to
• Winged reamers for wood over
• Stitch screws for light gauge
• Sealing screws for water
3.6.2.2 Material Specifications
3.6.2.3 Technical Data
3.6.2.4 Installation Instructions
3.6.2.5 Ordering Information
3.6.2.2 Material Specifications
Material ASTM A510 Grade 1018-1022
Listings/Approvals
ICC-ES (International Code Council)
ESR-2196
Heat Treatment Case hardened and tempered
• Size 1/4": 0.005" to 0.011" case depth
Plating Refer to Section 3.6.2.5 for screw coating information.
COLA (City of Los Angeles)
RR 25678
Warning: Because of the potential for delayed hydrogen assisted stress corrosion cracking, many hardened steel fasteners are not recommended for use with dissimilar metals or chemically treated wood when moisture may be present or in corrosive environments. For further information, contact Hilti Technical Support at
1-877-749-6337.
3.6.2.3 Technical Data
Ultimate Tensile Strengths – Pullout (Tension), lb (kN)1,2,3,4,5,6,7
ICC-ES ESR-2196, provides IBC rec- ognition of Hilti’s Self-Drilling Screw fasteners for most common applica- tions (e.g. CFS connections, gypsum to CFS, etc.), including HWH, HHWH, PPH, PPFH, PBH, PWH, PTH, PPCH, TPCH and PFTH head style screws.
|
Screw
Designation
|
Nominal Diameter in.
|
||||||
20
(0.036)
|
18
(0.048)
|
16
(0.060)
|
14
(0.075)
|
12
(0.105)
|
10
(0.135)
|
||
|
#6
|
0.138
|
190
(0.85)
|
250
(1.11)
|
320
(1.42)
|
395
(1.76)
|
555
(2.47)
|
715
(3.18)
|
|
#7
|
0.151
|
210
(0.93)
|
275
(1.22)
|
345
(1.53)
|
435
(1.93)
|
605
(2.69)
|
780
(3.47)
|
|
#8
|
0.164
|
225
(1.00)
|
300
(1.33)
|
375
(1.67)
|
470
(2.09)
|
660
(2.94)
|
845
(3.76)
|
|
#10
|
0.190
|
260
(1.16)
|
350
(1.56)
|
435
(1.93)
|
545
(2.42)
|
765
(3.40)
|
980
(4.36)
|
|
#12
|
0.216
|
295
(1.31)
|
395
(1.76)
|
495
(2.20)
|
620
(2.76)
|
870
(3.87)
|
1120
(4.98)
|
|
|
0.250
|
345
(1.53)
|
460
(2.05)
|
575
(2.56)
|
715
(3.18)
|
1000
(4.45)
|
1290
(5.74)
|
1 The lower of the ultimate pullout, pullover, and tension fastener strength of screw should be used for design.
2 Load values based upon calculations done in accordance with Section E4 of the AISI S100.
4 ANSI/ASME standard screw diameters were used in the calculations and are listed in the tables.
5 The screw diameters in the table above are available in head styles of pan, hex washer, pancake, flat, wafer and bugle.
6 The load data in the table is based upon sheet steel with F = 45 ksi. For F = 55 ksi steel, multiply values by 1.22. For F = 65 ksi steel, multiply values by 1.44.
7 Refer to Section 3.6.2.5 to ensure drilling capacities.
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3.6.2 Self-Drilling Screws
Ultimate Tensile Strengths – Pullover (Tension), lb (kN)1,2,3,4,5,6,7
|
Screw
Designation
|
Washer or Head Diameter in.
|
|||||||
22
(0.030)
|
20
(0.036)
|
18
(0.048)
|
16
(0.060)
|
14
(0.075)
|
12
(0.105)
|
10
(0.135)
|
||
Hex Washer Head (HWH)
|
||||||||
|
#8
|
0.335
|
675
(3.00)
|
815
(3.63)
|
1000
(4.45)
|
1000
(4.45)
|
1000
(4.45)
|
1000
(4.45)
|
1000
(4.45)
|
|
#10
|
0.399
|
805
(3.58)
|
970
(4.31)
|
1290
(5.74)
|
1370
(6.09)
|
1370
(6.09)
|
1370
(6.09)
|
1370
(6.09)
|
|
|
0.415
|
835
(3.71)
|
1010
(4.49)
|
1340
(5.96)
|
1680
(7.47)
|
2100
(9.34)
|
2325
(10.34)
|
2325
(10.34)
|
|
|
0.415
|
835
(3.71)
|
1010
(4.49)
|
1340
(5.96)
|
1680
(7.47)
|
2100
(9.34)
|
2940
(13.08)
|
3780
(16.81)
|
|
|
0.500
|
1010
(4.49)
|
1220
(5.43)
|
1620
(7.21)
|
2030
(9.03)
|
2530
(11.25)
|
3540
(13.75)
|
4560
(20.28)
|
Phillips Pan Head (PPH)
|
||||||||
|
#7
|
0.303
|
615
(2.74)
|
735
(3.27)
|
980
(4.36)
|
1000
(4.45)
|
1000
(4.45)
|
1000
(4.45)
|
1000
(4.45)
|
|
#8
|
0.311
|
630
(2.80)
|
755
(3.36)
|
1000
(4.45)
|
1000
(4.45)
|
1000
(4.45)
|
1000
(4.45)
|
1000
(4.45)
|
|
#10
|
0.364
|
740
(3.29)
|
885
(3.94)
|
1180
(5.25)
|
1370
(6.09)
|
1370
(6.09)
|
1370
(6.09)
|
1370
(6.09)
|
Phillips Truss Head (PTH)
|
||||||||
|
#8
|
0.433
|
875
(3.89)
|
1000
(4.45)
|
1000
(4.45)
|
1000
(4.45)
|
1000
(4.45)
|
1000
(4.45)
|
1000
(4.45)
|
|
#10
|
0.411
|
830
(3.69)
|
1000
(4.45)
|
1330
(5.92)
|
1390
(6.18)
|
1390
(6.18)
|
1390
(6.18)
|
1390
(6.18)
|
Phillips Pancake Head (PPCH)
|
||||||||
|
|
0.409
|
830
(3.69)
|
995
(4.43)
|
1325
(5.89)
|
1370
(6.09)
|
1370
(6.09)
|
1370
(6.09)
|
1370
(6.09)
|
Phillips Flat Truss Head (PFTH)
|
||||||||
|
#10
|
0.364
|
740
(3.29)
|
885
(3.94)
|
1180
(5.25)
|
1475
(6.56)
|
1840
(8.18)
|
2170
(9.65)
|
2170
(9.65)
|
2. Load values based upon calculations done in accordance with Section E4 of the AISI S100.
3. AISI S100 recommends a safety factor of 3.0 be applied for allowable strength design, a Φ factor of 0.5 be applied for LRFD design or a Φ factor of 0.4 be
5. Phillips Bugle Head (PBH) and Phillips Wafer Head (PWH) styles are not covered by this table because they are not intended for attachment of steel to steel.
6. The load data in the table is based upon sheet steel with F = 45 ksi. For F = 55 ksi steel, multiply values by 1.22. For F = 65 ksi steel, multiply values by 1.44.
Nominal Ultimate Fastener Strength of Screw
Torsional Strength1,2
|
Screw
Designation
|
Nominal Diameter (in.)
|
||
Tension, Pts
lb (kN)1
|
|||
2 The lower of the ultimate shear fastener strength and shear bearing should be used for design.
3 AISI S100 recommends a safety factor of 3.0 be applied for allowable strength design,
4 When the distance to the end of the connected part is parallel to the line of the applied force the allowable shear fastener strength must be reduced for end distance, when necessary, in accordance with E4.3.2 of Appendix A of AISI S100.
|
|
Min. Torsional
Strength in-lb (Nm)
|
| 10-12 | |
| 10-16 | |
| 10-18 | |
| 10-24 | |
| 12-14 | |
| 12-24 | |
| 1/4-14 | |
| 1/4-20 |
2 Values in table are ultimate torsional strengths. To obtain maximum setting torque, multiply values in table by 0.66.
162 Hilti, Inc. (US) 1-800-879-8000 | www.us.hilti.com I en español 1-800-879-5000 I Hilti (Canada) Corp. 1-800-363-4458 I www.hilti.ca I Direct Fastening Technical Guide 2015
Screw Fastening Systems
Self-Drilling Screws 3.6.2
Ultimate Shear Strengths – Bearing (Shear), lb (kN)1,2,3,4,5,6,7
|
Screw
Designation
|
Nominal Diameter in.
|
Thickness of steel member in contact with screw head
ga (in.)
|
|
||||
|
|
|
|
|
|
|||
|
#7
|
|
18 (0.048) ≥ 16 (0.060) |
500 (2.22) 500 (2.22) |
660 (2.94) 660 (2.94) |
880 (3.91) 890 (3.96) |
880 (3.91) 890 (3.96) |
880 (3.91) 890 (3.96) |
|
#8
|
|
18 (0.048) ≥ 16 (0.060) |
525 (2.34) 525 (2.34) |
805 (3.58) 805 (3.58) |
955 (4.25) |
955 (4.25) |
955 (4.25) |
|
|
|
18 (0.048) 16 (0.060) ≥ 14 (0.075) |
565 (2.51) 565 (2.51) 565 (2.51) |
865 (3.85) 865 (3.85) 865 (3.85) |
1210 (5.38) 1210 (5.38) |
1390 (6.18) 1645 (7.32) |
1390 (6.18) 1645 (7.32) |
|
|
|
18 (0.048) ≥ 16 (0.060) |
565 (2.51) 565 (2.51) |
865 (3.85) 865 (3.85) |
1210 (5.38) |
1215 (5.40) |
1215 (5.40) |
|
|
|
18 (0.048) 16 (0.060) ≥ 14 (0.075) |
565 (2.51) 565 (2.51) 565 (2.51) |
865 (3.85) 865 (3.85) 865 (3.85) |
1210 (5.38) 1210 (5.38) |
1390 (6.18) 1645 (7.32) |
1390 (6.18) 1645 (7.32) |
|
|
|
18 (0.048) 16 (0.060) ≥ 14 (0.075) |
600 (2.67) 600 (2.67) 600 (2.67) |
925 (4.11) 925 (4.11) 925 (4.11) |
1290 (5.74) 1290 (5.74) |
1570 (6.98) 1800 (8.00) |
1570 (6.98) 1880 (8.36) |
|
|
|
18 (0.048) 16 (0.060) 14 (0.075) ≥ 12 (0.090) |
600 (2.67) 600 (2.67) 600 (2.67) 600 (2.67) |
925 (4.11) 925 (4.11) 925 (4.11) 925 (4.11) |
1290 (5.74) 1290 (5.74) 1290 (5.74) |
1570 (6.98) 1800 (8.00) 1800 (8.00) |
1570 (6.98) 1970 (8.76) 2285 (10.16) |
|
|
|
18 (0.048) 16 (0.060) 14 (0.075) ≥ 12 (0.090) |
645 (2.87) 645 (2.87) 645 (2.87) 645 (2.87) |
1020 (4.54) 995 (4.43) 995 (4.43) 995 (4.43) |
1090 (4.85) 1400 (6.23) 1390 (6.18) 1390 (6.18) 1390 (6.18) |
1090 (4.85) 1460 (6.49) 1820 (8.10) 1940 (8.63) 1940 (8.63) |
1090 (4.85) 1460 (6.49) 1820 (8.10) 2280 (10.14) 2440 (10.85) |
1 The lower of the ultimate shear bearing and shear fastener strength of screw should be used for design.
2 Load values based upon calculations done in accordance with Section E4 of AISI S100.
3 AISI S100 recommends a safety factor of 3.0 be applied for allowable strength design, a Φ factor of 0.5 be applied for LRFD design or a Φ factor of 0.4 be
4 ANSI/ASME standard screw diameters were used in the calculations and are listed in the tables.
5 Load values in table are for Hex Washer Head (HWH and HHWH), Phillips Pan Head (PPH), Phillips Truss Head (PTH), Phillips Pancake Head (PPCH), and
6 The load data in the table is based upon sheet steel with F = 45 ksi. For F = 55 ksi steel, multiply values by 1.22. For F = 65 ksi steel, multiply values by 1.44.
7 Refer to Section 3.6.2.5 to ensure drilling capacities.
3.6.2.4 Installation Instructions
For general discussion of Hilti screw fastener installation, reference Section 3.6.1.7.
For allowable diaphragm shear loads and stiffness values for steel roof or floor deck utilizing Hilti self-drilling screws as frame or sidelap fasteners, reference Section 3.5 and
download Hilti’s Profis DF software at www.us.hilti.com/
decking (US), or www.hilti.ca (Canada).
To estimate the number of sidelap screws on a steel roof or floor deck project, reference Section 3.5.1.6.
Hilti, Inc. (US) 1-800-879-8000 | www.us.hilti.com I en español 1-800-879-5000 I Hilti (Canada) Corp. 1-800-363-4458 I www.hilti.ca I Direct Fastening Technical Guide 2015 163
3.6.2 Self-Drilling Screws
3.6.2.5 Ordering Information
Collated Self-Drilling Screws
Light/Medium Gauge Metal Applications (Sidelap)
|
Description |
Thread Length |
Thickness (MT)1 |
Recess | Coating2 | Box Qty | |||
Min
|
||||||||
| S-SLC 01 M HWH Collated |
250
|
|||||||
| S-SLC 02 M HWH Collated |
250
|
|||||||
| S-MD 10-16 x 7/8 HWH Collated |
250
|
|||||||
|
Description |
Thread Length |
Thickness (MT)1 |
Recess | Coating2 | Box Qty | |||
Min
|
||||||||
| S-MD 10-16 x 3/4 HWH#3 Collated |
250
|
|||||||
| S-MD 12-24 x 7/8 HWH#4 Collated |
250
|
|||||||
2 For coating abbreviations, Zinc-1 = EN/ISO 4042 A3F; Zinc-2 = Cr3 + (Cr6 + free) 8-14 μm. For more information on corrosion resistance, reference Section
Single Self-Drilling Screws
Sidelap (unsupported metal sheets)
HWH with bonded washer
with wings
PWH
|
Description |
Thread Length |
Thickness (MT)1 |
Recess | Coating2 | Box Qty | |||
Min
|
||||||||
| S-MD 12-14x1 HHWH Stitch | ||||||||
| S-MD 10-16x7/8 HHWH Pilot Point | ||||||||
| S-MD 1/4-14x7/8 HWH Stitch Kwik-Seal | Kwik-Cote | |||||||
2 For coating abbreviations, Zinc-1 = EN/ISO 4042 A3F; Kwik Cote = Proprietary Coating, Section 3.6.2.2 For more information on corrosion resistance, reference
164 Hilti, Inc. (US) 1-800-879-8000 | www.us.hilti.com I en español 1-800-879-5000 I Hilti (Canada) Corp. 1-800-363-4458 I www.hilti.ca I Direct Fastening Technical Guide 2015
Screw Fastening Systems
Self-Drilling Screws 3.6.2
Light Gauge Applications: Steel to Steel
|
Description |
Length |
Thickness (MT)1 |
|
Coating2 | Box Qty | |||
| S-MD 8-18x1/2 HWH #2 | ||||||||
| S-MD 8-18x3/4 HWH #2 | ||||||||
| S-MD 8-18x1/2 PPH #2 | ||||||||
| S-MD 10-16x1/2 HWH #2 | ||||||||
| S-MD 10-16x3/4 HWH #2 | ||||||||
| S-MD 10-16x1 HWH #2 | ||||||||
1 Refer to Figure in Section 3.6.1.5.
2 For coating abbreviations, Zinc-1 = EN/ISO 4042 A3F For more information on corrosion resistance, reference Section 3.6.1.6.
Light / Medium Gauge Metal Applications
|
Description |
Length |
Thickness (MT)1 |
|
Coating2 | Box Qty | |||
| S-MD 10-16x5/8 HWH #3 | ||||||||
| S-MD 10-16x3/4 HWH #3 | ||||||||
| S-MD 10-16x3/4 HHWH #3 | ||||||||
| S-MD 10-16x1 HWH #3 | ||||||||
| S-MD 10-16x1 1/4 HWH #3 |
1"
|
|||||||
| S-MD 10-16x1 1/2 HWH #3 | ||||||||
| S-MD 10-16x5/8 PPH #3 | ||||||||
| S-MD 10-16x3/4 PPH #3 | ||||||||
| S-DD 10-16x5/8 PPCH #3 | PHL #2 | |||||||
| S-DD 10-12x3/4 PFTH #3 | PHL #2 | |||||||
| S-DD 10-18x3/4 PTH #3 | PHL #2 | |||||||
| S-MD 12-14x3/4 HWH #3 | ||||||||
| S-MD 12-14x1 HWH #3 | ||||||||
| S-MD 12-14x1 1/2 HWH #3 | 1-1/16" | |||||||
| S-MD 12-14x2 HWH #3 | 1-9/16" | |||||||
| S-DD 12-14x1 TPCH #3 | TX 25 HF | |||||||
| S-MD 1/4-14x3/4 HWH #3 | ||||||||
| S-MD 1/4-14x1 HWH #3 | ||||||||
| S-MD 1/4-14x1 1/2 HWH #3 | 1-1/16" | |||||||
| S-MD 1/4-14x2 HWH #3 | 1-9/16" | |||||||
| S-MD 12-14x3/4 HWH #3 Kwik-Seal | Kwik-Cote | |||||||
| S-MD 12-14x1 HWH #3 Kwik-Seal | Kwik-Cote | |||||||
| S-MD 12-14x1 1/4 HWH #3 Kwik-Seal |
1"
|
Kwik-Cote | ||||||
| S-MD 12-14x1 1/2 HWH #3 Kwik-Seal | Kwik-Cote | |||||||
| S-MD 12-14x2 HWH #3 Kwik-Seal | Kwik-Cote | |||||||
| S-MD 1/4-14x1 HWH #3 Kwik-Seal | Kwik-Cote | |||||||
| S-MD 1/4-14x1 1/2 HWH #3 Kwik-Seal |
1"
|
Kwik-Cote | ||||||
1 Refer to Figure in Section 3.6.1.5.
Warning: Because of the potential for delayed hydrogen assisted stress corrosion cracking, many hardened steel fasteners are not recommended for use with dissimilar metals or chemically treated wood when moisture may be present or in corrosive environments. For further information, contact Hilti Technical Support at 1-877-749-6337.
Hilti, Inc. (US) 1-800-879-8000 | www.us.hilti.com I en español 1-800-879-5000 I Hilti (Canada) Corp. 1-800-363-4458 I www.hilti.ca I Direct Fastening Technical Guide 2015 165
3.6.2 Self-Drilling Screws
Single Self-Drilling Screws – Heavy Gauge Metal Applications
|
Description |
Length |
Thickness (MT)1 |
|
Coating2 | Box Qty | |||
| S-MD 12-24x7/8 HWH #4 | ||||||||
| S-MD 12-24x1 1/4 HWH #4 | ||||||||
| S-MD 12-24x1 1/4 HWH #5 | ||||||||
| S-MD 12-24x1 1/4 HWH #5 Kwik-Cote | KwikCote | |||||||
| S-MD 12-24x2 HWH #5 Kwik-Cote | 1-3/16" | KwikCote | ||||||
| S-MD 12-24x3 HWH #5 Kwik-Cote | 2-3/16" | KwikCote | ||||||
|
S-MD 12-24x1 1/4 HWH #5 Kwik-Cote Bond Washer |
|
|
|
|
|
|
KwikCote |
|
2 For coating abbreviations, Zinc-1 = EN/ISO 4042 A3F; Kwik Cote = Proprietary Coating, Section 3.6.2.2. For more information on corrosion resistance, reference
|
Description |
Length |
Thickness (MT)1 |
|
Coating2 | Box Qty | |||
| Wood Drill Screws | ||||||||
| Decking Screws (Plywood to Framing) | ||||||||
| S-WD 8-18x1 5/16 PFH #3 | PHL #2 |
BP
|
||||||
| S-WD 8-18x1 15/16 PFH #3 | PHL #2 |
BP
|
||||||
| S-WD 10-24x1 PWH #3 | PHL #2 | |||||||
| S-WD 10-24x1 1/4 PWH #3 |
1"
|
PHL #2 | ||||||
| S-WD 10-24x1 1/2PWH #3 | PHL #2 | |||||||
| Winged Reamer Wood Drill Screws | ||||||||
| S-WW 10-24x1 7/16 PWH #3 wings |
1"
|
PHL #2 | ||||||
| S-WW 12-24x2 PFH #4 wings | PHL #2 | |||||||
| S-WW 12-24x2 1/2 PFH #4 wings |
2"
|
PHL #2 | ||||||
| S-WW 14-20x2 3/4 PFH #4 wings |
2"
|
PHL #2 | ||||||
2 For coating abbreviations, Zinc-1 = EN/ISO 4042 A3F; BP = Black Phosphate. For more information on corrosion resistance, reference Section 3.6.1.6.
166 Hilti, Inc. (US) 1-800-879-8000 | www.us.hilti.com I en español 1-800-879-5000 I Hilti (Canada) Corp. 1-800-363-4458 I www.hilti.ca I Direct Fastening Technical Guide 2015
Screw Fastening Systems
Self-Drilling Screws 3.6.2
Hilti, Inc. (US) 1-800-879-8000 | www.us.hilti.com I en español 1-800-879-5000 I Hilti (Canada) Corp. 1-800-363-4458 I www.hilti.ca I Direct Fastening Technical Guide 2015 167
Drywall Applications (Drywall to steel, framing and lathing screws)
| Description |
Application
|
||
| 6 x 1 PBH SD |
DGP
|
10,000
|
|
| 6 x 1 PBH SD Zinc |
Zinc-1
|
10,000
|
|
| 6 x 1-1/8 PBH SD |
DGP
|
10,000
|
|
| 6 x 1-1/8 PBH SD Zinc |
Zinc-1
|
10,000
|
|
| 6 x 1-1/4 PBH SD |
DGP
|
8,000
|
|
| 6 x 1-1/4 PBH SD Zinc |
Zinc-1
|
8,000
|
|
| 6 x 1-5/8 PBH SD |
DGP
|
5,000
|
|
| 6 x 1-5/8 PBH SD Zinc |
Zinc-1
|
5,000
|
|
| 6 x 1-7/8 PBH SD |
DGP
|
4,000
|
|
| 6 x 1-7/8 PBH SD Zinc |
Zinc-1
|
4,000
|
|
| 8 x 2-3/8 PBH SD |
BP
|
2,500
|
|
| 8 x 2-3/8 PBH SD Zinc |
Zinc-1
|
2,500
|
|
| 8 x 2-5/8 PBH SD |
BP
|
1,600
|
|
| 8 x 2-5/8 PBH SD Zinc |
Zinc-1
|
1,600
|
|
| 8 x 3 PBH SD |
BP
|
1,400
|
|
| 8 x 3 PBH SD Zinc |
Zinc-1
|
1,400
|
|
| 7 x 7/16 PPFH SD Framer |
BP
|
10,000
|
|
| 7 x 7/16 PPFH SD Framer Zinc |
Zinc-1
|
10,000
|
|
| 8 x 1/2 PPH SD Framer Zinc |
Zinc-1
|
10,000
|
|
| 10 x 5/8 PPCH SD Framer |
Zinc-1
|
7,500
|
|
| 10 x 3/4 PFTH SD Framer Zinc |
Zinc-1
|
7,500
|
|
| 10 x 3/4 PTH SD Framer Zinc |
Zinc-1
|
5,000
|
|
| 8 x 1/2 PTH SD Lathing Zinc |
Zinc-1
|
10,000
|
|
| 8 x 3/4 PTH SD Lathing Zinc |
Zinc-1
|
10,000
|
|
| 8 x 1 PTH SD Lathing Zinc |
Zinc-1
|
8,000
|
|
| 8 x 1-1/4 PTH SD Lathing Zinc |
Zinc-1
|
8,000
|
|
| 6 x 1-5/8 SFH SD |
DGP
|
5,000
|
Fastening wood trim and base to
14 ga to 20 ga studs
|
| 6 x 2-1/4 SFH SD Zinc |
Zinc-1
|
3,000
|
The importance of IBC compliant screws.
ICC-ES ESR-2196 provides IBC recognition of Hilti’s Self-Drilling Screw Fasteners. This recognition was based on a comprehensive and rigorous independent evaluation of Hilti’s Self-Drilling Screw Fasteners to the latest IBC code requirements in ICC-ES AC118 Acceptance Criteria for Self-Tapping Screw Fasteners, as well as the AISI S904 and AISI S905 test standards.
AC118 provides the IBC code recognition and quality assurance for screw fasteners. ICC-ES ESR-2196 recognizes many
types of Hilti screws for the most common applications including CFS connections, gypsum to CFS, etc. Specifically,
ESR-2196 covers the HWH, HHWH, PPH, PPFH, PBH, PWH, PTH, PPCH, TPCH and PFTH head style Hilti screws.
To ensure IBC compliance of screws on your next project, reference ESR-2196.
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