About Tapping Screws
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About Flat Head Screws
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About Rounded Head Screws
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About Socket Head Screws
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Torx Alloy Steel Socket Head Screws
A Torx-Plus drive has more points of contact than a hex drive, allowing you to tighten these screws with less slippage or damage to the recess. With a tensile strength of 180,000 psi, these alloy steel screws are stronger than Grade 8 steel screws. Their black-oxide finish provides mild corrosion resistance in dry environments. They can be used with both Torx-Plus and standard Torx tools (see Torx bits and Torx keys and drivers). Screws meet ASTM A574 specifications and testing requirements for material quality. Length is measured from under the head.
Coarse threads are the industry standard; choose these screws if you don’t know the threads per inch.
For technical drawings and 3-D models, click on a part number.
Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Thread Spacing  | Dia. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
Black-Oxide Alloy Steel | ||||||||||
8-32 | ||||||||||
| 1/4" | Fully Threaded | Coarse | 0.27" | 0.164" | IP25 | 180,000 | ASTM A574 | 100 | 000000000 | 000000 |
| 3/8" | Fully Threaded | Coarse | 0.27" | 0.164" | IP25 | 180,000 | ASTM A574 | 100 | 000000000 | 00000 |
| 1/2" | Fully Threaded | Coarse | 0.27" | 0.164" | IP25 | 180,000 | ASTM A574 | 100 | 000000000 | 00000 |
| 5/8" | Fully Threaded | Coarse | 0.27" | 0.164" | IP25 | 180,000 | ASTM A574 | 50 | 000000000 | 00000 |
| 3/4" | Fully Threaded | Coarse | 0.27" | 0.164" | IP25 | 180,000 | ASTM A574 | 50 | 000000000 | 00000 |
| 1" | Fully Threaded | Coarse | 0.27" | 0.164" | IP25 | 180,000 | ASTM A574 | 50 | 000000000 | 00000 |
Metric Steel Button Head Torx Screws
The Torx or Torx-Plus drive on these metric screws have more points of contact than other drives, allowing you to tighten them without damaging the recess. Length is measured from under the head. For Torx tools, see Torx and Torx-Plus bits, keys, and drivers. Torx-Plus screws can be used with both Torx-Plus and Torx tools.
Black-oxide steel screws are mildly corrosion resistant in dry environments.
For technical drawings and 3-D models, click on a part number.
Drive | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Lg., mm | Threading | Head Dia., mm | Head Ht., mm | Style | Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
Black-Oxide Alloy Steel | ||||||||||
M5 × 0.8 mm | ||||||||||
| 10 | Fully Threaded | 9.50 | 2.75 | Torx Plus | IP25, T25 | 110,000 | ASME B18.3.4M | 100 | 000000000 | 000000 |
| 12 | Fully Threaded | 9.50 | 2.75 | Torx Plus | IP25, T25 | 110,000 | ASME B18.3.4M | 100 | 000000000 | 00000 |
| 16 | Fully Threaded | 9.50 | 2.75 | Torx Plus | IP25, T25 | 110,000 | ASME B18.3.4M | 100 | 000000000 | 00000 |
Alloy Steel Button Head Torx Screws
Made from alloy steel, these screws are three times stronger than standard steel button head Torx screws. A Torx-Plus drive has more points of contact than other drives, allowing you to tighten the screw without damaging the recess. For Torx tools, see Torx and Torx-Plus bits, keys, and drivers. Torx-Plus screws can be used with both Torx-Plus and Torx tools. Length is measured from under the head.
Black-oxide alloy steel screws are mildly corrosion resistant in dry environments.
Zinc-plated alloy steel screws resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
Drive | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Head Dia. | Head Ht. | Style | Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
Black-Oxide Alloy Steel | ||||||||||
10-24 | ||||||||||
| 1/4" | Fully Threaded | 0.361" | 0.101" | Torx Plus | IP25, T25 | 120,000 | ASME B18.3, ASTM F835 | 50 | 000000000 | 000000 |
| 1/2" | Fully Threaded | 0.361" | 0.101" | Torx Plus | IP25, T25 | 120,000 | ASME B18.3, ASTM F835 | 50 | 000000000 | 00000 |
| 3/4" | Fully Threaded | 0.361" | 0.101" | Torx Plus | IP25, T25 | 120,000 | ASME B18.3, ASTM F835 | 50 | 000000000 | 00000 |
| 1" | Fully Threaded | 0.361" | 0.101" | Torx Plus | IP25, T25 | 120,000 | ASME B18.3, ASTM F835 | 50 | 000000000 | 00000 |
10-32 | ||||||||||
| 1/4" | Fully Threaded | 0.361" | 0.101" | Torx Plus | IP25, T25 | 120,000 | ASME B18.3, ASTM F835 | 100 | 000000000 | 00000 |
| 3/8" | Fully Threaded | 0.361" | 0.101" | Torx Plus | IP25, T25 | 120,000 | ASME B18.3, ASTM F835 | 50 | 000000000 | 00000 |
| 1/2" | Fully Threaded | 0.361" | 0.101" | Torx Plus | IP25, T25 | 120,000 | ASME B18.3, ASTM F835 | 50 | 000000000 | 00000 |
| 5/8" | Fully Threaded | 0.361" | 0.101" | Torx Plus | IP25, T25 | 120,000 | ASME B18.3, ASTM F835 | 50 | 000000000 | 00000 |
| 1" | Fully Threaded | 0.361" | 0.101" | Torx Plus | IP25, T25 | 120,000 | ASME B18.3, ASTM F835 | 50 | 000000000 | 00000 |
Zinc-Plated Alloy Steel | ||||||||||
10-24 | ||||||||||
| 1/4" | Fully Threaded | 0.361" | 0.101" | Torx Plus | IP25, T25 | 120,000 | ASME B18.3, ASTM F835 | 100 | 000000000 | 00000 |
| 3/8" | Fully Threaded | 0.361" | 0.101" | Torx Plus | IP25, T25 | 120,000 | ASME B18.3, ASTM F835 | 100 | 000000000 | 00000 |
| 1/2" | Fully Threaded | 0.361" | 0.101" | Torx Plus | IP25, T25 | 120,000 | ASME B18.3, ASTM F835 | 50 | 000000000 | 00000 |
| 5/8" | Fully Threaded | 0.361" | 0.101" | Torx Plus | IP25, T25 | 120,000 | ASME B18.3, ASTM F835 | 100 | 000000000 | 00000 |
| 3/4" | Fully Threaded | 0.361" | 0.101" | Torx Plus | IP25, T25 | 120,000 | ASME B18.3, ASTM F835 | 50 | 000000000 | 00000 |
| 1" | Fully Threaded | 0.361" | 0.101" | Torx Plus | IP25, T25 | 120,000 | ASME B18.3, ASTM F835 | 50 | 000000000 | 00000 |
| 1 1/4" | Fully Threaded | 0.361" | 0.101" | Torx Plus | IP25, T25 | 120,000 | ASME B18.3, ASTM F835 | 50 | 000000000 | 00000 |
| 1 1/2" | Fully Threaded | 0.361" | 0.101" | Torx Plus | IP25, T25 | 120,000 | ASME B18.3, ASTM F835 | 50 | 000000000 | 00000 |
| 2" | Fully Threaded | 0.361" | 0.101" | Torx Plus | IP25, T25 | 120,000 | ASME B18.3, ASTM F835 | 25 | 000000000 | 00000 |
| 2 1/2" | Fully Threaded | 0.361" | 0.101" | Torx Plus | IP25, T25 | 120,000 | ASME B18.3, ASTM F835 | 25 | 000000000 | 00000 |
10-32 | ||||||||||
| 1/4" | Fully Threaded | 0.361" | 0.101" | Torx Plus | IP25, T25 | 120,000 | ASME B18.3, ASTM F835 | 100 | 000000000 | 00000 |
| 3/8" | Fully Threaded | 0.361" | 0.101" | Torx Plus | IP25, T25 | 120,000 | ASME B18.3, ASTM F835 | 100 | 000000000 | 00000 |
| 1/2" | Fully Threaded | 0.361" | 0.101" | Torx Plus | IP25, T25 | 120,000 | ASME B18.3, ASTM F835 | 100 | 000000000 | 00000 |
| 3/4" | Fully Threaded | 0.361" | 0.101" | Torx Plus | IP25, T25 | 120,000 | ASME B18.3, ASTM F835 | 100 | 000000000 | 00000 |
| 1" | Fully Threaded | 0.361" | 0.101" | Torx Plus | IP25, T25 | 120,000 | ASME B18.3, ASTM F835 | 100 | 000000000 | 00000 |
Stainless Steel Pan Head Torx Screws
Made from 18-8 stainless steel, these screws have good chemical resistance and may be mildly magnetic. All are passivated for added protection against oxidation and corrosion. Torx and Torx-Plus drives have more points of contact than other drives, allowing you to tighten the screw without damaging the recess. For Torx tools, see Torx and Torx-Plus bits, keys, and drivers. Torx-Plus screws can be used with both Torx-Plus and Torx tools. Length is measured from under the head.
For technical drawings and 3-D models, click on a part number.
Drive | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Head Dia. | Head Ht. | Style | Size | Tensile Strength, psi | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | |||||||||
10-24 | |||||||||
| 3/8" | Fully Threaded | 0.373" | 0.133" | Torx Plus | IP25, T25 | 70,000 | 50 | 000000000 | 000000 |
| 1/2" | Fully Threaded | 0.373" | 0.133" | Torx Plus | IP25, T25 | 70,000 | 50 | 000000000 | 00000 |
| 3/4" | Fully Threaded | 0.373" | 0.133" | Torx Plus | IP25, T25 | 70,000 | 25 | 000000000 | 0000 |
| 1" | Fully Threaded | 0.373" | 0.133" | Torx Plus | IP25, T25 | 70,000 | 25 | 000000000 | 0000 |
10-32 | |||||||||
| 1/4" | Fully Threaded | 0.373" | 0.133" | Torx Plus | IP25, T25 | 70,000 | 50 | 000000000 | 00000 |
| 3/8" | Fully Threaded | 0.373" | 0.133" | Torx Plus | IP25, T25 | 70,000 | 50 | 000000000 | 00000 |
| 1/2" | Fully Threaded | 0.373" | 0.133" | Torx Plus | IP25, T25 | 70,000 | 25 | 000000000 | 00000 |
| 5/8" | Fully Threaded | 0.373" | 0.133" | Torx Plus | IP25, T25 | 70,000 | 25 | 000000000 | 0000 |
| 3/4" | Fully Threaded | 0.373" | 0.133" | Torx Plus | IP25, T25 | 70,000 | 25 | 000000000 | 0000 |
| 1" | Fully Threaded | 0.373" | 0.133" | Torx Plus | IP25, T25 | 70,000 | 25 | 000000000 | 0000 |
Metric Steel Torx Flat Head Screws
These screws are twice as strong as standard steel Torx flat head screws. A Torx or Torx-Plus drive has more points of contact than other drives, allowing you to tighten the screw without damaging the recess. For Torx tools, see Torx and Torx-Plus bits, keys, and drivers. Torx-Plus screws can be used with both Torx-Plus and Torx tools. They’re angled under the head to sit flush within countersunk holes. Length is measured from the top of the head.
Black-oxide steel screws have a coating that protects the steel from rusting in dry environments and blends in with dark surfaces.
For technical drawings and 3-D models, click on a part number.
Drive | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Lg., mm | Threading | Head Dia., mm | Head Ht., mm | Style | Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
Black-Oxide Class 12.9 Alloy Steel | ||||||||||
M5 × 0.8 mm | ||||||||||
| 8 | Fully Threaded | 11.2 | 3.1 | Torx Plus | IP25, T25 | 140,000 | ASME B18.3.5M | 100 | 000000000 | 000000 |
| 10 | Fully Threaded | 11.2 | 3.1 | Torx Plus | IP25, T25 | 140,000 | ASME B18.3.5M | 100 | 000000000 | 00000 |
| 12 | Fully Threaded | 11.2 | 3.1 | Torx Plus | IP25, T25 | 140,000 | ASME B18.3.5M | 100 | 000000000 | 00000 |
| 16 | Fully Threaded | 11.2 | 3.1 | Torx Plus | IP25, T25 | 140,000 | ASME B18.3.5M | 100 | 000000000 | 00000 |
| 20 | Fully Threaded | 11.2 | 3.1 | Torx Plus | IP25, T25 | 140,000 | ASME B18.3.5M | 100 | 000000000 | 00000 |
Alloy Steel Torx Flat Head Screws
Made from alloy steel, these screws are twice as strong as standard steel Torx flat head screws. A Torx-Plus drive has more points of contact than other drives, allowing you to tighten the screw without damaging the recess. For Torx tools, see Torx and Torx-Plus bits, keys, and drivers. These screws can be used with both Torx-Plus and Torx tools. They’re angled under the head to sit flush within countersunk holes. Length is measured from the top of 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. | |
Black-Oxide Alloy Steel | |||||||||
|---|---|---|---|---|---|---|---|---|---|
10-24 | |||||||||
| 1/2" | Fully Threaded | 0.411" | 0.127" | IP25, T25 | 140,000 | ASME B18.3, ASTM F835 | 50 | 000000000 | 000000 |
| 5/8" | Fully Threaded | 0.411" | 0.127" | IP25, T25 | 140,000 | ASME B18.3, ASTM F835 | 50 | 000000000 | 00000 |
| 3/4" | Fully Threaded | 0.411" | 0.127" | IP25, T25 | 140,000 | ASME B18.3, ASTM F835 | 50 | 000000000 | 00000 |
| 1" | Fully Threaded | 0.411" | 0.127" | IP25, T25 | 140,000 | ASME B18.3, ASTM F835 | 25 | 000000000 | 00000 |
10-32 | |||||||||
| 3/8" | Fully Threaded | 0.411" | 0.127" | IP25, T25 | 140,000 | ASME B18.3, ASTM F835 | 50 | 000000000 | 00000 |
| 1/2" | Fully Threaded | 0.411" | 0.127" | IP25, T25 | 140,000 | ASME B18.3, ASTM F835 | 50 | 000000000 | 00000 |
| 5/8" | Fully Threaded | 0.411" | 0.127" | IP25, T25 | 140,000 | ASME B18.3, ASTM F835 | 50 | 000000000 | 00000 |
| 3/4" | Fully Threaded | 0.411" | 0.127" | IP25, T25 | 140,000 | ASME B18.3, ASTM F835 | 50 | 000000000 | 00000 |
| 1" | Fully Threaded | 0.411" | 0.127" | IP25, T25 | 140,000 | ASME B18.3, ASTM F835 | 25 | 000000000 | 0000 |
18-8 Stainless Steel Torx Flat Head Screws
These 18-8 stainless steel screws have good chemical resistance and may be mildly magnetic. All are passivated for added protection against oxidation and corrosion. A Torx-Plus drive has more points of contact than other drives, allowing you to tighten the screw without damaging the recess. For Torx tools, see Torx and Torx-Plus bits, keys, and drivers. These screws can be used with both Torx-Plus and Torx tools. Screws are angled under the head to sit flush within countersunk holes. Length is measured from the top of the head.
For technical drawings and 3-D models, click on a part number.
| Lg. | Threading | Min. Thread Lg. | Head Dia. | Head Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
10-24 | ||||||||||
| 5/8" | Fully Threaded | __ | 0.411" | 0.127" | IP25, T25 | 60,000 | ASME B18.3 | 50 | 000000000 | 000000 |
| 1 1/2" | Partially Threaded | 7/8" | 0.411" | 0.127" | IP25, T25 | 60,000 | ASME B18.3 | 50 | 000000000 | 00000 |
10-32 | ||||||||||
| 3/8" | Fully Threaded | __ | 0.411" | 0.127" | IP25, T25 | 60,000 | ASME B18.3 | 50 | 000000000 | 00000 |
| 1/2" | Fully Threaded | __ | 0.411" | 0.127" | IP25, T25 | 60,000 | ASME B18.3 | 50 | 000000000 | 00000 |
| 5/8" | Fully Threaded | __ | 0.411" | 0.127" | IP25, T25 | 60,000 | ASME B18.3 | 50 | 000000000 | 00000 |
| 3/4" | Fully Threaded | __ | 0.411" | 0.127" | IP25, T25 | 60,000 | ASME B18.3 | 50 | 000000000 | 00000 |
| 1" | Fully Threaded | __ | 0.411" | 0.127" | IP25, T25 | 60,000 | ASME B18.3 | 50 | 000000000 | 00000 |
Metric Thread-Forming Screws for Soft Metal
These screws have a triangular shank that presses tightly as it forms threads, so screws resist loosening in soft metals such as brass, aluminum, and copper. They’re also known as Taptite® screws. Made from steel, they're zinc-plated steel to resist corrosion in wet environments. Length is measured from under the head.
Screws with a Torx-Plus drive allow you to apply extra force with less slippage or damage to the recess.
For technical drawings and 3-D models, click on a part number.
Thread-Forming Screws for Soft Metal
The triangular shank presses tightly as it forms threads, so screws resist loosening in soft metals such as brass, aluminum, and copper. These screws may have a slightly different diameter than standard screws. Also known as Taptite® screws, they have a Torx-Plus drive that allows you to apply extra force with less slippage or damage to the recess. Made from steel, they're coated or plated steel to resist corrosion in wet environments. Length is measured from under the head.
For technical drawings and 3-D models, click on a part number.
Head | ||||||||
|---|---|---|---|---|---|---|---|---|
| Lg. | Dia. | Ht. | Drive Size | Drill Bit Size | For Use In | Pkg. Qty. | Pkg. | |
Black Corrosion-Resistant-Coated Steel | ||||||||
10-24 | ||||||||
| 1/2" | 0.373" | 0.133" | IP25, T25 | No. 21 | Aluminum, Brass, Copper | 25 | 000000000 | 000000 |
| 3/4" | 0.373" | 0.133" | IP25, T25 | No. 21 | Aluminum, Brass, Copper | 25 | 000000000 | 00000 |
| 1" | 0.373" | 0.133" | IP25, T25 | No. 21 | Aluminum, Brass, Copper | 25 | 000000000 | 00000 |
10-32 | ||||||||
| 1/2" | 0.373" | 0.133" | IP25, T25 | No. 21 | Aluminum, Brass, Copper | 25 | 000000000 | 00000 |
| 3/4" | 0.373" | 0.133" | IP25, T25 | No. 21 | Aluminum, Brass, Copper | 25 | 000000000 | 00000 |
Zinc-Plated Steel | ||||||||
10-24 | ||||||||
| 1/2" | 0.373" | 0.133" | IP25, T25 | No. 21 | Aluminum, Brass, Copper | 50 | 000000000 | 00000 |
| 3/4" | 0.373" | 0.133" | IP25, T25 | No. 21 | Aluminum, Brass, Copper | 25 | 000000000 | 0000 |
| 1" | 0.373" | 0.133" | IP25, T25 | No. 21 | Aluminum, Brass, Copper | 25 | 000000000 | 0000 |
10-32 | ||||||||
| 1/2" | 0.373" | 0.133" | IP25, T25 | No. 21 | Aluminum, Brass, Copper | 25 | 000000000 | 0000 |
| 3/4" | 0.373" | 0.133" | IP25, T25 | No. 21 | Aluminum, Brass, Copper | 25 | 000000000 | 0000 |
Steel Torx Rounded Head Thread-Forming Screws for Plastic
These steel screws have a black-oxide or zinc-plated finish to resist corrosion. A Torx or Torx Plus drive provides more points of contact than a Phillips drive, allowing you to apply extra force with less slippage or damage to the recess. Comparable to Plastite screws, these screws have a triangular shank that presses tightly against formable plastic such as polypropylene to resist loosening. They may have a slightly different diameter than standard screws. Length is measured from under the head.
Zinc-plated steel screws won’t rust in wet environments.
For technical drawings and 3-D models, click on a part number.
Head | Drive | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Dia. | Ht. | Size | Style | Drill Bit Size | Approximate Threads per Inch | Threading | Pkg. Qty. | Pkg. | |
No. 10 | ||||||||||
| 1/2" | 0.373" | 0.133" | IP25, T25 | Torx Plus | No. 15 | 14 | Fully Threaded | 50 | 000000000 | 00000 |
| 3/4" | 0.373" | 0.133" | IP25, T25 | Torx Plus | No. 15 | 14 | Fully Threaded | 50 | 000000000 | 0000 |
| 1" | 0.373" | 0.133" | IP25, T25 | Torx Plus | No. 15 | 14 | Fully Threaded | 50 | 000000000 | 0000 |
| 1 1/4" | 0.373" | 0.133" | IP25, T25 | Torx Plus | No. 15 | 14 | Fully Threaded | 50 | 000000000 | 0000 |
| 1 1/2" | 0.373" | 0.133" | IP25, T25 | Torx Plus | No. 15 | 14 | Fully Threaded | 50 | 000000000 | 00000 |
Steel Thread-Forming Screws for Thin Plastic
These steel screws are zinc plated to resist corrosion in wet environments. They have a round shank and more sharply angled threads than other thread-forming screws, so they require less driving torque and reduce the risk of cracking thin plastic. A Torx drive allows you to apply extra force with less slippage or damage to the recess. Length is measured from under the head.
Style A screws are also known as Delta PT® screws.
For technical drawings and 3-D models, click on a part number.
Stainless Steel Thread-Forming Screws for Thin Plastic
18-8 stainless steel screws have good chemical resistance and may be mildly magnetic. They have a round shank and more sharply angled threads than other thread-forming screws, so they require less driving torque and reduce the risk of cracking thin plastic. A Torx drive allows you to apply extra force with less slippage or damage to the recess.
Pan head screws are also known as Delta PT® screws. Length is measured from under the head.
For technical drawings and 3-D models, click on a part number.
