About Rounded Head Screws
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About Flat Head Screws
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About Tapping Screws
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Tamper-Resistant Drilled Spanner Pan Head Screws
A tamper-resistant drilled spanner drive makes these screws difficult to remove without special tools. They're 18-8 stainless steel for good chemical resistance. They may be mildly magnetic. All are passivated for added protection against oxidation and corrosion. For installation tools, see drilled spanner drivers and bits. Length is measured from under the head.
For technical drawings and 3-D models, click on a part number.
| Lg. | Threading | Head Dia. | Head Ht. | Drive Size | Tensile Strength, psi  | Specifications Met | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | |||||||||
|---|---|---|---|---|---|---|---|---|---|
6-32 | |||||||||
| 3/16" | Fully Threaded | 0.270" | 0.082" | No. 6 | 80,000 | __ | 25 | 000000000 | 000000 |
| 1/4" | Fully Threaded | 0.270" | 0.082" | No. 6 | 80,000 | ASME B18.6.3 | 25 | 000000000 | 00000 |
| 3/8" | Fully Threaded | 0.270" | 0.082" | No. 6 | 80,000 | ASME B18.6.3 | 25 | 000000000 | 00000 |
| 1/2" | Fully Threaded | 0.270" | 0.082" | No. 6 | 80,000 | ASME B18.6.3 | 25 | 000000000 | 00000 |
| 3/4" | Fully Threaded | 0.270" | 0.082" | No. 6 | 80,000 | ASME B18.6.3 | 25 | 000000000 | 00000 |
| 1" | Fully Threaded | 0.270" | 0.082" | No. 6 | 80,000 | ASME B18.6.3 | 25 | 000000000 | 00000 |
Extra-Wide Tamper-Resistant Drilled Spanner Truss Head Screws
An extra-wide truss head distributes holding pressure to reduce the likelihood of crushing thin materials. These screws have a drilled spanner drive that makes them difficult to remove without special tools. For installation tools, see drilled spanner drivers and bits. Screws are 18-8 stainless steel for good chemical resistance. They may be mildly magnetic. Length is measured from under the head.
Passivated stainless steel screws provide added protection against oxidation and corrosion.
For technical drawings and 3-D models, click on a part number.
| Lg. | Threading | Head Dia. | Head Ht. | Drive Size | Finish | Tensile Strength, psi | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | |||||||||
|---|---|---|---|---|---|---|---|---|---|
6-32 | |||||||||
| 1/4" | Fully Threaded | 0.321" | 0.086" | No. 6 | Passivated | 70,000 | 25 | 000000000 | 000000 |
| 3/8" | Fully Threaded | 0.321" | 0.086" | No. 6 | Passivated | 70,000 | 25 | 000000000 | 00000 |
| 1/2" | Fully Threaded | 0.321" | 0.086" | No. 6 | Passivated | 70,000 | 25 | 000000000 | 00000 |
| 3/4" | Fully Threaded | 0.321" | 0.086" | No. 6 | Passivated | 70,000 | 25 | 000000000 | 00000 |
| 1" | Fully Threaded | 0.321" | 0.086" | No. 6 | Passivated | 70,000 | 25 | 000000000 | 00000 |
Tamper-Resistant Tri-Groove Rounded Head Screws
Difficult to remove without special tools, these screws have three grooves. For installation tools, see Tri-Groove bits and drivers. Screws are zinc plated for corrosion resistance in wet environments. Length is measured from under the head.
For technical drawings and 3-D models, click on a part number.
| Lg. | Threading | Head Dia. | Head Ht. | Drive Size | Tensile Strength, psi | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
6-32 | ||||||||
| 3/8" | Fully Threaded | 0.26" | 0.12" | No. 6 | 80,000 | 50 | 000000000 | 000000 |
| 1/2" | Fully Threaded | 0.26" | 0.12" | No. 6 | 80,000 | 50 | 000000000 | 00000 |
| 3/4" | Fully Threaded | 0.26" | 0.12" | No. 6 | 80,000 | 50 | 000000000 | 00000 |
8-32 | ||||||||
| 3/8" | Fully Threaded | 0.28" | 0.148" | No. 6 | 80,000 | 50 | 000000000 | 00000 |
| 1/2" | Fully Threaded | 0.28" | 0.148" | No. 6 | 80,000 | 50 | 000000000 | 00000 |
| 3/4" | Fully Threaded | 0.28" | 0.148" | No. 6 | 80,000 | 50 | 000000000 | 00000 |
| 1" | Fully Threaded | 0.28" | 0.148" | No. 6 | 80,000 | 50 | 000000000 | 00000 |
| 1 1/4" | Fully Threaded | 0.28" | 0.148" | No. 6 | 80,000 | 50 | 000000000 | 00000 |
| 1 1/2" | Fully Threaded | 0.28" | 0.148" | No. 6 | 80,000 | 50 | 000000000 | 00000 |
Tamper-Resistant Drilled Spanner Flat Head Screws
These screws have a tamper-resistant drilled spanner drive, which makes them difficult to remove without special tools. For installation tools, see tamper-resistant drilled spanner drivers and bits. Made from 18-8 stainless steel, they have good chemical resistance and may be mildly magnetic. They’re angled under the head to sit flush within countersunk holes. Length is measured from the top of the head.
Screws with an undercut profile have a shallow head for use in thin materials.
Passivated stainless steel screws provide added protection against oxidation and corrosion.
For technical drawings and 3-D models, click on a part number.
| Lg. | Threading | Flat Head Profile | Head Dia. | Head Ht. | Drive Size | Finish | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
6-32 | |||||||||||
| 1/4" | Fully Threaded | Undercut | 0.262" | 0.059" | No. 6 | Passivated | 70,000 | ASME B18.6.3 | 25 | 000000000 | 00000 |
| 5/16" | Fully Threaded | Standard | 0.279" | 0.083" | No. 6 | Passivated | 70,000 | ASME B18.6.3 | 25 | 000000000 | 0000 |
| 3/8" | Fully Threaded | Standard | 0.262" | 0.083" | No. 6 | Passivated | 70,000 | ASME B18.6.3 | 25 | 000000000 | 0000 |
| 1/2" | Fully Threaded | Standard | 0.262" | 0.083" | No. 6 | Passivated | 70,000 | ASME B18.6.3 | 25 | 000000000 | 0000 |
| 5/8" | Fully Threaded | Standard | 0.279" | 0.083" | No. 6 | Passivated | 70,000 | ASME B18.6.3 | 25 | 000000000 | 00000 |
| 3/4" | Fully Threaded | Standard | 0.262" | 0.083" | No. 6 | Passivated | 70,000 | ASME B18.6.3 | 25 | 000000000 | 00000 |
| 1" | Fully Threaded | Standard | 0.262" | 0.083" | No. 6 | Passivated | 70,000 | ASME B18.6.3 | 25 | 000000000 | 00000 |
| 1 1/2" | Fully Threaded | Standard | 0.262" | 0.083" | No. 6 | Passivated | 70,000 | ASME B18.6.3 | 25 | 000000000 | 00000 |
| 2" | Fully Threaded | Standard | 0.262" | 0.083" | No. 6 | Passivated | 70,000 | ASME B18.6.3 | 25 | 000000000 | 00000 |
Drilled Spanner Rounded Head Screws for Sheet Metal
Install and remove these screws with a tamper-resistant spanner driver. Made from 18-8 stainless steel, they are chemical resistant and may be mildly magnetic. They penetrate 0.025" and thinner sheet metal. Length is measured from under the head.
For technical drawings and 3-D models, click on a part number.
Drilled Spanner Flat Head Screws for Sheet Metal
Install and remove these screws with a tamper-resistant spanner driver. They're beveled under the head for a flush finish in countersunk holes. Made from 18-8 stainless steel, these screws are chemical resistant and may be mildly magnetic. They penetrate 0.025" and thinner sheet metal. Length is measured from the top of the head.
For technical drawings and 3-D models, click on a part number.
Tri-Wing® Bits
A three-winged tip fits triangular slotted screw recesses.
Hex shank bits (also known as insert bits) are used in hand drivers or with a bit adapter in power tools.
| Drive Size | For Screw Size | Overall Lg. | Material | Each | |
1/4" Hex Shank Size | |||||
|---|---|---|---|---|---|
| No. 6 | 1/4" | 1 1/4" | Steel | 0000000 | 000000 |
Torq-Set® Bit Sets
These bits have an offset cross shape.
Hex shank bits (also known as insert bits) are used in hand drivers or with a bit adapter in power tools.
Hex shank bits for power tools have a groove in the shank and fit directly into power tools without an adapter. They offer more reach for recessed holes and less wobble compared to a hex shank bit used with an adapter.
For technical drawings and 3-D models, click on a part number.
| Components Included | Bits Included | Material | Container Type | Each | |
1/4" Hex Shank Size | |||||
|---|---|---|---|---|---|
| 10 Bits | Torq-Set®: No. 4, No. 6, No. 8, No. 10, 1/4" (1" O'all Lg.)—2 ea. | Steel | __ | 00000000 | 000000 |
1/4" Hex Shank Size for Power Tools | |||||
| 10 Bits | Torq-Set®: No. 4, No. 6, No. 8, No. 10, 1/4" (1 1/4" O'all Lg.)—2 ea. | Steel | Plastic Caddy | 00000000 | 00000 |
Bit Assortments
These assortments contain general-purpose bits.
Hex shank bits (also known as insert bits) are used in hand drivers or with a bit adapter in power tools.
 |  Hex |  Tamper-Resistant Hex |  Phillips |  Slotted |
 Torx |  Drilled Spanner |  Pozidriv® |  Tamper-Resistant Torx |
| No. of Pieces | Components Included | Bits Included | Adapters Included | Each | |
1/4" Hex Shank Size—Steel | |||||
|---|---|---|---|---|---|
| 100 | 96 Bits 4 Adapters | Drilled Spanner: No. 4, No. 6, No. 8, No. 10 No. 12, 1/4" (1" O'all Lg.)—1 ea. Hex (Inch): 0.050", 1/16", 5/64", 3/32", 7/64" 1/8", 9/64", 5/32", 3/16", 7/32", 1/4" 5/16", 3/8" (1" O'all Lg.)—1 ea. Hex (Metric): 1.5 mm, 2 mm, 2.5 mm, 3 mm 4 mm, 5 mm, 6 mm, 7 mm, 8 mm (1" O'all Lg.)—1 ea. Phillips: No. 0 (1" O'all Lg.)—1 ea. Phillips: No. 1, No. 3 (1" O'all Lg.)—2 ea. Phillips: No. 2 (1" O'all Lg.)—4 ea. Pozidriv®: No. 1, No. 2, No. 3 (1" O'all Lg.)—1 ea. Screw-In Hook Driver Bit—1 ea. Slotted: 3/32", 1/8", 5/32", 3/16", 7/32", 1/4" 9/32", 5/16", 3/8" (1" O'all Lg.)—1 ea. Square: No. 0, No. 1, No. 2, No. 3, No. 4 (1" O'all Lg.)—1 ea. Tamper-Resistant Hex (Inch): 3/32" 7/64", 1/8", 9/64", 5/32", 3/16", 7/32" 1/4", 5/16" (1" O'all Lg.)—1 ea. Tamper-Resistant Hex (Metric): 2.5 mm, 3 mm 4 mm, 5 mm, 6 mm, 8 mm (1" O'all Lg.)—1 ea. Tamper-Resistant Torx: T6, T7, T8, T9, T10, T15 T20, T25, T27, T30, T40 (1" O'all Lg.)—1 ea. Torx: T5, T6, T7, T8, T9, T10, T15, T20, T25, T27 T30, T40, T45, T50, T55 (1" O'all Lg.)—1 ea. | 1/4" Male Square Drive × 1/4" Hex Shank Adapter (1" O'all Lg.) 1/4" Male Square Drive × 1/4" Hex Shank Adapter (2" O'all Lg.) 2 1/2" Lg. Bit Adapter for Power Tools Bit Adapter for Square Drive Tools | 000000 | 000000 |
Bit Screwdrivers
Insert a bit into the shaft and a magnet holds it in place.
Tamper-resistant Torx are also known as pin-in-Torx.
Tamper-resistant hex are also known as pin-in-hex.
Shaft | Material | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of Sizes | Sizes Included | O'all Lg. | Lg. | O'all Wd. | Shaft | Bit | Handle | Grip Style | Features | Each | |
For 1/4" Bit Hex Shank Size | |||||||||||
| 26 | Drilled Spanner: No. 4, No. 6, No. 8, No. 10 Tamper-Resistant Hex: 3/32", 7/64", 1/8", 9/64", 5/32", 3/16", 2mm, 2.5mm, 3mm, 5mm Tamper-Reistant Torx: T7, T8, T10, T15, T20, T25, T27, T30, T40 Torq Set®: No. 6, No. 8, No. 10 | 8 1/2" | 3 3/8" | 5/16" | Stainless Steel | Steel | Plastic | Plain | Bit storage inside tool | 0000000 | 000000 |