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Steel Phillips Flat Head Thread-Cutting Screws for Metal
These steel screws cut threads in drilled holes as they’re turned, so they require less driving torque and cause less stress on your material than thread forming screws. They're beveled under the head for use in countersunk holes. Length is measured from the top of the head.
Screws meet ASME B18.6.3 dimensional standards. They also meet SAE J933 for material quality.
Black-oxide steel screws have mild corrosion resistance in dry environments.
Zinc-plated steel screws resist corrosion in wet environments.
Head | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Flat Head Profile | Dia. | Ht. | Drive Size | Drill Bit Size | Tapping Screw Type | For Use In | Pkg. Qty. | Specifications Met | Pkg. | |
Black-Oxide Steel | |||||||||||
6-32  | |||||||||||
| 1/2" | Standard | 0.262" | 0.083" | No. 2 | No. 31 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 50 | ASME B18.6.3, SAE J933 | 000000000 | 000000 |
8-32 | |||||||||||
| 1/2" | Standard | 0.312" | 0.1" | No. 2 | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | ASME B18.6.3, SAE J933 | 000000000 | 0000 |
12-24 | |||||||||||
| 1/2" | Standard | 0.412" | 0.132" | No. 3 | No. 8 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 10 | ASME B18.6.3, SAE J933 | 000000000 | 0000 |
Zinc-Plated Steel | |||||||||||
4-40 | |||||||||||
| 1/2" | Standard | 0.212" | 0.067" | No. 1 | No. 41 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 50 | ASME B18.6.3, SAE J933 | 000000000 | 00000 |
6-32 | |||||||||||
| 1/2" | Standard | 0.262" | 0.083" | No. 2 | No. 31 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | ASME B18.6.3, SAE J933 | 000000000 | 00000 |
8-32 | |||||||||||
| 1/2" | Standard | 0.312" | 0.1" | No. 2 | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | ASME B18.6.3, SAE J933 | 000000000 | 00000 |
10-24 | |||||||||||
| 1/2" | Undercut | 0.362" | 0.081" | No. 2 | No. 17 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | ASME B18.6.3, SAE J933 | 000000000 | 00000 |
10-32 | |||||||||||
| 1/2" | Undercut | 0.362" | 0.081" | No. 2 | No. 17 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | ASME B18.6.3, SAE J933 | 000000000 | 00000 |
1/2"-13 | |||||||||||
| 1 1/2" | Standard | 0.815" | 0.223" | No. 4 | 29/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | 1 | ASME B18.6.3, SAE J933 | 000000000 | 00000 |
Stainless Steel Phillips Flat Head Thread-Cutting Screws for Metal
Made from 410 stainless steel, these screws are strong, wear resistant, and mildly chemical resistant. They're beveled under the head for use in countersunk holes. Screws cut threads in drilled holes as they’re turned, so they require less driving torque and cause less stress on your material than thread forming screws. Not for use with aluminum. Length is measured from the top of the head.
Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Flat Head Profile | Dia. | Ht. | Drive Size | Drill Bit Size | Tapping Screw Type | For Use In | Pkg. Qty. | Pkg. | |
410 Stainless Steel | ||||||||||
6-32 | ||||||||||
| 1/2" | Standard | 0.262" | 0.083" | No. 2 | No. 31 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
8-32 | ||||||||||
| 1/2" | Standard | 0.312" | 0.1" | No. 2 | No. 26 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
10-24 | ||||||||||
| 1/2" | Undercut | 0.362" | 0.081" | No. 2 | No. 17 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
10-32 | ||||||||||
| 1/2" | Undercut | 0.362" | 0.081" | No. 2 | No. 17 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
Torx Flat Head Thread-Cutting Screws for Metal
A Torx drive has more points of contact than a Phillips drive, allowing you to apply extra force with less slippage or damage to the recess. These screws are beveled under the head for use in countersunk holes. They cut threads in drilled holes as they’re turned, so they require less driving torque and cause less stress on your material than thread forming screws. Length is measured from the top of the head.
Screws with a black-phosphate finish provide mild corrosion resistance in dry environments.
Screws with a zinc-plated finish resist corrosion in wet environments.
Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Dia. | Ht. | Drive Size | Drill Bit Size | Threading | Tapping Screw Type | For Use In | Pkg. Qty. | Pkg. | |
Black-Phosphate Steel | ||||||||||
1/4"-20 | ||||||||||
| 1/2" | 0.477" | 0.153" | T30 | No. 1 | Fully Threaded | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 000000 |
Zinc-Plated Steel | ||||||||||
6-32 | ||||||||||
| 1/2" | 0.262" | 0.083" | T10 | 31 | Fully Threaded | F | Aluminum, Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 00000 |
8-32 | ||||||||||
| 1/2" | 0.312" | 0.1" | T15 | 26 | Fully Threaded | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
1/4"-20 | ||||||||||
| 1/2" | 0.477" | 0.153" | T27 | No. 1 | Fully Threaded | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 00000 |
Steel Hex Head Thread-Cutting Screws for Metal
These steel screws are zinc plated to resist corrosion in wet environments. They have a hex head for a secure grip with a wrench and a flange to reduce the risk of crushing thin metal. Screws cut threads in drilled holes as they’re turned, so they require less driving torque and cause less stress on your material than thread forming screws. Length is measured from under the flange. Head height includes the flange.
Screws meet ASME B18.6.3 dimensional standards. They also meet SAE J933 standards for material quality.
Screws with serrations under the head grip the material surface for mild vibration resistance.
Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Wd. | Ht. | Flange Dia. | Drill Bit Size | Tapping Screw Type | For Use In | Specifications Met | Pkg. Qty. | Pkg. | |
External Hex—Zinc-Plated Steel | ||||||||||
6-32 | ||||||||||
| 1/2" | 0.25" | 0.118" | 0.328" | No. 31 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 000000 |
8-32 | ||||||||||
| 1/2" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
10-24 | ||||||||||
| 1/2" | 0.313" | 0.151" | 0.414" | No. 19 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
10-32 | ||||||||||
| 1/2" | 0.313" | 0.151" | 0.414" | 11/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
12-24 | ||||||||||
| 1/2" | 0.313" | 0.194" | 0.432" | No. 11 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
1/4"-20 | ||||||||||
| 1/2" | 0.375" | 0.24" | 0.52" | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
5/16"-18 | ||||||||||
| 1/2" | 0.5" | 0.285" | 0.676" | K | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 00000 |
3/8"-16 | ||||||||||
| 1/2" | 0.563" | 0.358" | 0.78" | R | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 10 | 000000000 | 00000 |
1/2"-13 | ||||||||||
| 3/4" | 0.75" | 0.485" | 1.04" | 29/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 1 | 000000000 | 0000 |
| 1" | 0.75" | 0.485" | 1.04" | 29/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 1 | 000000000 | 0000 |
| 1 1/4" | 0.75" | 0.485" | 1.04" | 29/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 1 | 000000000 | 0000 |
| 1 1/2" | 0.75" | 0.485" | 1.04" | 29/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 1 | 000000000 | 00000 |
| 2" | 0.75" | 0.485" | 1.04" | 29/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 1 | 000000000 | 0000 |
| 2 1/2" | 0.75" | 0.485" | 1.04" | 29/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 1 | 000000000 | 00000 |
| 3" | 0.75" | 0.485" | 1.04" | 29/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 1 | 000000000 | 00000 |
| 4" | 0.75" | 0.485" | 1.04" | 29/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 1 | 000000000 | 00000 |
External Hex with Serrated Flange—Zinc-Plated Steel | ||||||||||
8-32 | ||||||||||
| 1/2" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
10-32 | ||||||||||
| 1/2" | 0.313" | 0.151" | 0.414" | 11/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 00000 |
1/4"-20 | ||||||||||
| 1/2" | 0.375" | 0.24" | 0.52" | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 00000 |
5/16"-18 | ||||||||||
| 1/2" | 0.5" | 0.285" | 0.676" | K | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 5 | 000000000 | 00000 |
1/2"-13 | ||||||||||
| 1" | 0.75" | 0.485" | 1.04" | 29/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 1 | 000000000 | 0000 |
| 1 1/2" | 0.75" | 0.485" | 1.04" | 29/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 1 | 000000000 | 00000 |
External Hex/Phillips—Zinc-Plated Steel | ||||||||||
8-32 | ||||||||||
| 1/2" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 0000 |
External Hex/Slotted—Zinc-Plated Steel | ||||||||||
6-32 | ||||||||||
| 1/2" | 0.25" | 0.118" | 0.328" | No. 31 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
8-32 | ||||||||||
| 1/2" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
10-24 | ||||||||||
| 1/2" | 0.313" | 0.151" | 0.414" | No. 19 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
10-32 | ||||||||||
| 1/2" | 0.313" | 0.151" | 0.414" | 11/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
12-24 | ||||||||||
| 1/2" | 0.313" | 0.194" | 0.432" | No. 11 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
1/4"-20 | ||||||||||
| 1/2" | 0.375" | 0.24" | 0.52" | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
5/16"-18 | ||||||||||
| 1/2" | 0.5" | 0.285" | 0.676" | K | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 10 | 000000000 | 00000 |
Stainless Steel Hex Head Thread-Cutting Screws for Metal
Made from 410 stainless steel, these screws are strong, wear resistant, and mildly chemical resistant. They have a hex head for a secure grip with a wrench and a flange to reduce the risk of crushing thin metal. Screws cut threads in drilled holes as they’re turned, so they require less driving torque and cause less stress on your material than thread forming screws. Not for use with aluminum. Length is measured from under the flange. Head height includes the flange.
Head | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Lg. | Wd. | Ht. | Flange Dia. | Drill Bit Size | Tapping Screw Type | For Use In | Pkg. Qty. | Pkg. | |
410 Stainless Steel | |||||||||
8-32 | |||||||||
| 1/2" | 0.25" | 0.141" | 0.348" | No. 26 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 000000 |
10-24 | |||||||||
| 1/2" | 0.313" | 0.151" | 0.414" | No. 17 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
10-32 | |||||||||
| 1/2" | 0.313" | 0.151" | 0.414" | No. 17 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
12-24 | |||||||||
| 1/2" | 0.313" | 0.155" | 0.432" | No. 8 | F | Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 0000 |
1/4"-20 | |||||||||
| 1/2" | 0.375" | 0.24" | 0.52" | No. 1 | F | Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 00000 |
Steel Rounded Head Thread-Cutting Screws for Metal
These steel screws are zinc plated to resist corrosion in wet environments. They cut threads in drilled holes as they’re turned, so they require less driving torque and cause less stress on your material than thread forming screws. Length is measured from under the head.
Screws meet ASME B18.6.3 dimensional standards. They also meet SAE J933 for material quality.
Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Dia. | Ht. | Drive Size | Drill Bit Size | Tapping Screw Type | For Use In | Specifications Met | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel | ||||||||||
4-40 | ||||||||||
| 1/2" | 0.219" | 0.08" | No. 1 | No. 41 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
6-32 | ||||||||||
| 1/2" | 0.27" | 0.097" | No. 2 | No. 31 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
8-32 | ||||||||||
| 1/2" | 0.322" | 0.115" | No. 2 | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
10-24 | ||||||||||
| 1/2" | 0.373" | 0.133" | No. 2 | No. 17 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
10-32 | ||||||||||
| 1/2" | 0.373" | 0.133" | No. 2 | No. 17 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
12-24 | ||||||||||
| 1/2" | 0.425" | 0.151" | No. 3 | No. 8 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
1/4"-20 | ||||||||||
| 1/2" | 0.492" | 0.175" | No. 3 | No. 1 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 00000 |
5/16"-18 | ||||||||||
| 1/2" | 0.615" | 0.218" | No. 4 | K | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 5 | 000000000 | 0000 |
3/8"-16 | ||||||||||
| 1/2" | 0.74" | 0.261" | No. 4 | R | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 1 | 000000000 | 0000 |
Black Zinc-Plated Steel | ||||||||||
6-32 | ||||||||||
| 1/2" | 0.27" | 0.097" | No. 2 | No. 31 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
8-32 | ||||||||||
| 1/2" | 0.322" | 0.115" | No. 2 | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
10-24 | ||||||||||
| 1/2" | 0.373" | 0.133" | No. 2 | No. 17 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
10-32 | ||||||||||
| 1/2" | 0.373" | 0.133" | No. 2 | No. 17 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
12-24 | ||||||||||
| 1/2" | 0.425" | 0.151" | No. 3 | No. 8 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 00000 |
1/4"-20 | ||||||||||
| 1/2" | 0.492" | 0.175" | No. 3 | No. 1 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 00000 |
Stainless Steel Rounded Head Thread-Cutting Screws for Metal
Made from 410 stainless steel, these screws are strong, wear resistant, and mildly chemical resistant. They cut threads in drilled holes as they’re turned, so they require less driving torque and cause less stress on your material than thread forming screws. Not for use with aluminum. Length is measured from under the head.
Head | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Lg. | Dia. | Ht. | Drive Size | Drill Bit Size | Tapping Screw Type | For Use In | Pkg. Qty. | Pkg. | |
410 Stainless Steel | |||||||||
4-40 | |||||||||
| 1/2" | 0.219" | 0.08" | No. 1 | 2.2 mm | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
6-32 | |||||||||
| 1/2" | 0.27" | 0.097" | No. 2 | No. 36 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
8-32 | |||||||||
| 1/2" | 0.322" | 0.115" | No. 2 | No. 29 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
10-24 | |||||||||
| 1/2" | 0.373" | 0.133" | No. 2 | No. 25 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
10-32 | |||||||||
| 1/2" | 0.373" | 0.133" | No. 2 | No. 21 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
12-24 | |||||||||
| 1/2" | 0.425" | 0.151" | No. 3 | No. 18 | F | Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 00000 |
1/4"-20 | |||||||||
| 1/2" | 0.492" | 0.175" | No. 3 | No. 7 | F | Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 00000 |
Quick-Install Thread-Cutting Screws for Soft Metal
A wide cutting slot provides excellent chip clearing and low driving torque in soft metal such as brass. Made from 410 stainless steel, these screws are strong, wear resistant, and mildly chemical resistant. Not for use with aluminum. Length is measured from under the head.
Head | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Lg. | Dia. | Ht. | Drive Size | Drill Bit Size | Tapping Screw Type | For Use In | Pkg. Qty. | Pkg. | |
410 Stainless Steel | |||||||||
4-40 | |||||||||
| 1/2" | 0.219" | 0.08" | No. 1 | No. 41 | 23/T | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
6-32 | |||||||||
| 1/2" | 0.27" | 0.097" | No. 2 | No. 31 | 23/T | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
8-32 | |||||||||
| 1/2" | 0.322" | 0.115" | No. 2 | No. 26 | 23/T | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
10-24 | |||||||||
| 1/2" | 0.373" | 0.133" | No. 2 | No. 17 | 23/T | Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 0000 |
10-32 | |||||||||
| 1/2" | 0.373" | 0.133" | No. 2 | No. 17 | 23/T | Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 0000 |
1/4"-20 | |||||||||
| 1/2" | 0.492" | 0.175" | No. 3 | No. 1 | 23/T | Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 00000 |
Hinge Screws
Commonly used with door hinge hardware, these screws cut threads in soft material such as aluminum and brass. They're beveled under the head for use in countersunk holes. They are undercut to allow more threading. Screws cut threads in drilled holes as they’re turned, so they require less driving torque and cause less stress on your material than thread forming screws. Length is measured from the top of the head.
Zinc-plated steel screws resist corrosion in wet environments.
Brass, bronze, and chrome-plated steel screws have a bright and attractive finish. They're corrosion resistant in wet environments.
Head | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Material | Thread Size | Lg. | Dia. | Ht. | Drive Size | Drill Bit Size | Tapping Screw Type | For Use In | Pkg. Qty. | Pkg. | |
| Brass-Plated Steel | 12-24 | 1/2" | 0.412" | 0.092" | No. 3 | No. 8 | F | Aluminum, Brass, Sheet Metal | 10 | 000000000 | 00000 |
| Bronze-Plated Steel | 12-24 | 1/2" | 0.412" | 0.092" | No. 3 | No. 8 | F | Aluminum, Brass, Sheet Metal | 25 | 000000000 | 00000 |
| Chrome-Plated Steel | 12-24 | 1/2" | 0.412" | 0.092" | No. 3 | No. 8 | F | Aluminum, Brass, Sheet Metal | 25 | 000000000 | 00000 |
| Zinc-Plated Steel | 12-24 | 1/2" | 0.412" | 0.092" | No. 3 | No. 8 | F | Aluminum, Brass, Sheet Metal | 25 | 000000000 | 0000 |
Electrical Grounding Screws
The green color identifies these as grounding screws. They have a flange that provides a wide flat surface for making solid electrical connections. Screws cut threads in drilled holes as they’re turned, so they require less driving torque and cause less stress on your material than thread forming screws. Length is measured from under the flange. Head height includes the flange.
Head | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Lg. | Wd. | Ht. | Flange Dia. | Drill Bit Size | Tapping Screw Type | For Use In | Pkg. Qty. | Pkg. | |
Green-Dyed Zinc-Plated Steel | |||||||||
8-32 | |||||||||
| 1/2" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Sheet Metal, Steel | 25 | 000000000 | 00000 |
10-24 | |||||||||
| 1/2" | 0.313" | 0.151" | 0.414" | No. 16 | F | Aluminum, Brass, Sheet Metal, Steel | 25 | 000000000 | 0000 |
10-32 | |||||||||
| 1/2" | 0.313" | 0.151" | 0.414" | No. 17 | F | Aluminum, Brass, Sheet Metal, Steel | 25 | 000000000 | 0000 |
Thread-Cutting Screws for Plastic
These screws cut threads into drilled holes as they’re turned, so they require less driving torque and cause less stress on material than thread-forming screws. Also known as Type BT and Type 25 screws, they have coarse threads that grip soft plastic. They're 410 stainless steel, which is strong, wear resistant, and mildly chemical resistant. Length is measured from under the head.
Head | ||||||||
|---|---|---|---|---|---|---|---|---|
| Lg. | Dia. | Ht. | Drive Size | Drill Bit Size | Approximate Threads per Inch | Pkg. Qty. | Pkg. | |
410 Stainless Steel | ||||||||
No. 2 | ||||||||
| 1/2" | 0.167" | 0.062" | No. 1 | No. 49 | 32 | 100 | 000000000 | 000000 |
No. 4 | ||||||||
| 1/2" | 0.219" | 0.08" | No. 1 | No. 41 | 24 | 100 | 000000000 | 0000 |
No. 6 | ||||||||
| 1/2" | 0.27" | 0.097" | No. 2 | No. 31 | 20 | 100 | 000000000 | 0000 |
No. 8 | ||||||||
| 1/2" | 0.322" | 0.115" | No. 2 | No. 26 | 18 | 100 | 000000000 | 00000 |
No. 10 | ||||||||
| 1/2" | 0.373" | 0.133" | No. 2 | No. 17 | 16 | 100 | 000000000 | 00000 |