System of Measurement System of Measurement |
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Thread Size Thread Size | Show |
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Thread Size Thread Size | Hide |
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Material Material |
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Drive Style Drive Style |
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| External Hex | Hex |
Threading Threading |
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 | Fully Threaded |
 | Partially Threaded |
Thread Spacing Thread Spacing |
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Thread Direction Thread Direction |
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 | Right Hand |
Thread Type Thread Type |
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Finish Finish |
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Socket Head Profile Socket Head Profile |
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 | Standard |
Hardness Hardness |
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Tensile Strength Tensile Strength |
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Rounded Head Style Rounded Head Style |
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 | Button |
Flat Head Profile Flat Head Profile |
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 | Standard |
Rounded Head Profile Rounded Head Profile |
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About Nuts, Materials, and Finishes
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About Set Screws
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About Rounded Head Screws
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About Flat Head Screws
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About Socket Head Screws
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Alloy Steel Socket Head Screws
With a tensile strength of 170,000 psi, these alloy steel screws are stronger than Grade 8 steel screws. Length is measured from under the head.
Black-oxide steel screws are mildly corrosion resistant in dry environments. Fine and extra-fine threads are closely spaced to prevent loosening from vibration; the finer the thread, the better the resistance. They are not compatible with coarse threads.
For technical drawings and 3-D models, click on a part number.
Head | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Min. Thread Lg. | Thread Spacing | Dia. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
5-44 | |||||||||||
Black-Oxide Alloy Steel | |||||||||||
| 1/4" | Fully Threaded | __ | Fine | 0.205" | 1/8" | 3/32" | 170,000 | ASTM A574 | 10 | 000000000 | 00000 |
| 3/8" | Fully Threaded | __ | Fine | 0.205" | 1/8" | 3/32" | 170,000 | ASTM A574 | 10 | 000000000 | 00000 |
| 1/2" | Fully Threaded | __ | Fine | 0.205" | 1/8" | 3/32" | 170,000 | ASTM A574 | 10 | 000000000 | 00000 |
| 3/4" | Fully Threaded | __ | Fine | 0.205" | 1/8" | 3/32" | 170,000 | ASTM A574 | 10 | 000000000 | 00000 |
| 1" | Partially Threaded | 3/4" | Fine | 0.205" | 1/8" | 3/32" | 170,000 | ASTM A574 | 5 | 000000000 | 0000 |
18-8 Stainless Steel Socket Head Screws
Made from 18-8 stainless steel, these screws have good chemical resistance and may be mildly magnetic. Length is measured from under the head. Fine threads are closely spaced to prevent loosening from vibration. They are not compatible with coarse threads.
For technical drawings and 3-D models, click on a part number.
Super-Corrosion-Resistant 316
Stainless Steel Socket Head Screws
These screws are corrosion resistant in wet environments, nonmagnetic, and electrically conductive. Length is measured from under the head. Fine threads are closely spaced to prevent loosening from vibration. They are not compatible with coarse threads.
For technical drawings and 3-D models, click on a part number.
18-8 Stainless Steel Button Head Hex Drive Screws
18-8 stainless steel button head screws have good chemical resistance and may be mildly magnetic. Length is measured from under the head.
For technical drawings and 3-D models, click on a part number.
Alloy Steel Button Head Hex Drive Screws
Made from alloy steel, these screws are nearly twice as strong as stainless steel button head screws. Length is measured from under the head.
Black-oxide alloy steel screws are mildly corrosion resistant in dry environments.
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 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
5-44 | |||||||||
| 1/4" | Fully Threaded | 0.238" | 0.066" | 5/64" | 120,000 | ASME B18.3, ASTM F835 | 10 | 000000000 | 00000 |
| 3/8" | Fully Threaded | 0.238" | 0.066" | 5/64" | 120,000 | ASME B18.3, ASTM F835 | 10 | 000000000 | 00000 |
| 1/2" | Fully Threaded | 0.238" | 0.066" | 5/64" | 120,000 | ASME B18.3, ASTM F835 | 10 | 000000000 | 00000 |
18-8 Stainless Steel Hex Drive Flat Head Screws
These 18-8 stainless steel screws 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.
Passivated stainless steel screws have 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 | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
5-44 | |||||||||||
| 1/4" | Fully Threaded | Standard | 0.281" | 0.09" | 5/64" | Passivated | 70,000 | ASME B18.3 | 10 | 000000000 | 00000 |
| 3/8" | Fully Threaded | Standard | 0.281" | 0.09" | 5/64" | Passivated | 70,000 | ASME B18.3 | 10 | 000000000 | 0000 |
| 1/2" | Fully Threaded | Standard | 0.281" | 0.09" | 5/64" | Passivated | 70,000 | ASME B18.3 | 10 | 000000000 | 0000 |
Alloy Steel Hex Drive Flat Head Screws
Made from alloy steel, these screws are nearly twice as strong as stainless steel flat head screws. They're angled under the head to sit flush within countersunk holes. Length is measured from the top of the head.
Black-oxide alloy steel screws have mild corrosion resistance in dry environments.
For technical drawings and 3-D models, click on a part number.
| Lg. | Threading | Flat Head Profile | Head Dia. | Head Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
Black-Oxide Alloy Steel | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
5-44 | ||||||||||
| 3/8" | Fully Threaded | Standard | 0.281" | 0.09" | 5/64" | 120,000 | ASTM F835 | 10 | 000000000 | 00000 |
| 1/2" | Fully Threaded | Standard | 0.281" | 0.09" | 5/64" | 120,000 | ASTM F835 | 10 | 000000000 | 00000 |
| 3/4" | Fully Threaded | Standard | 0.281" | 0.09" | 5/64" | 120,000 | ASTM F835 | 10 | 000000000 | 00000 |
Alloy Steel Cup-Point Set Screws
Made from alloy steel, these set screws have a thin edge that digs into hard surfaces for a secure hold. Length listed is the overall length.
Black-oxide alloy steel set screws resist corrosion in dry environments.
For technical drawings and 3-D models, click on a part number.
| Lg. | Drive Size | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
Black-Oxide Alloy Steel | ||||||
|---|---|---|---|---|---|---|
5-44 | ||||||
| 1/8" | 1/16" | Rockwell C45 | ASME B18.3, ASTM F912 | 100 | 000000000 | 00000 |
| 3/16" | 1/16" | Rockwell C45 | ASME B18.3, ASTM F912 | 100 | 000000000 | 0000 |
| 1/4" | 1/16" | Rockwell C45 | ASME B18.3, ASTM F912 | 100 | 000000000 | 00000 |
| 5/16" | 1/16" | Rockwell C45 | ASME B18.3, ASTM F912 | 25 | 000000000 | 00000 |
| 3/8" | 1/16" | Rockwell C45 | ASME B18.3, ASTM F912 | 25 | 000000000 | 00000 |
Alloy Steel Hollow-Lock Set Screws
Also known as jam set screws, these lock other screws in place, hold pins, and adjust spring tension. The hollow design allows you to inspect locked parts. A black-oxide finish provides corrosion resistance in dry environments. Length listed is the overall length.
For technical drawings and 3-D models, click on a part number.
| Lg. | Drive Size | Hardness | Pkg. Qty. | Pkg. | |
Black-Oxide Alloy Steel | |||||
|---|---|---|---|---|---|
5-44 | |||||
| 3/32" | 1/16" | Rockwell C45 | 10 | 000000000 | 00000 |
Low-Strength Steel Hex Nuts
About half the strength of medium-strength steel nuts, these nuts are for light duty fastening applications, such as securing access panels.
Zinc-plated steel nuts resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Wd. | Ht. | Specifications Met | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel | ||||||
|---|---|---|---|---|---|---|
| 5-44 | 5/16" | 7/64" | ASME B18.6.3 | 100 | 000000000 | 00000 |
18-8 Stainless Steel Hex Nuts
These nuts have good chemical resistance and may be mildly magnetic.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Wd. | Ht. | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | |||||
|---|---|---|---|---|---|
| 5-44 | 5/16" | 7/64" | 100 | 000000000 | 00000 |
Aluminum Hex Nuts
One-third the weight of steel, these aluminum nuts are corrosion resistant in wet environments and nonmagnetic. All meet ASME B18 dimensional standards.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Wd. | Ht. | Specifications Met | Pkg. Qty. | Pkg. | |
6061 Aluminum | ||||||
|---|---|---|---|---|---|---|
| 5-44 | 5/16" | 7/64" | ASME B18.6.3 | 5 | 000000000 | 00000 |
Brass Hex Nuts
These nuts are corrosion resistant in wet environments, electrically conductive, and nonmagnetic.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Wd. | Ht. | Pkg. Qty. | Pkg. | |
Brass | |||||
|---|---|---|---|---|---|
| 5-44 | 5/16" | 7/64" | 100 | 000000000 | 000000 |
18-8 Stainless Steel Cap Nuts
These cap nuts have good chemical resistance and may be mildly magnetic. Also known as acorn nuts, they have a smooth rounded head that covers and protects threads while providing a finished appearance.
For technical drawings and 3-D models, click on a part number.
Thread | ||||||
|---|---|---|---|---|---|---|
| Size | Dp. | Wd. | Ht. | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | ||||||
| 5-44 | 1/8" | 5/16" | 11/32" | 1 | 000000000 | 00000 |
Super-Corrosion-Resistant 316 Stainless Steel Cap Nuts
These cap nuts have excellent resistance to chemicals and salt water. Also known as acorn nuts, they have a smooth rounded head that covers and protects threads while providing a finished appearance. They may be mildly magnetic.
For technical drawings and 3-D models, click on a part number.
Thread | ||||||
|---|---|---|---|---|---|---|
| Size | Dp. | Wd. | Ht. | Pkg. Qty. | Pkg. | |
316 Stainless Steel | ||||||
| 5-44 | 1/8" | 5/16" | 11/32" | 1 | 000000000 | 00000 |