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Specifications Met Specifications Met |
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System of Measurement System of Measurement |
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Head Type Head Type |
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![]() | Flat |
Drive Style Drive Style |
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Finish Finish |
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Material Material |
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Tensile Strength Tensile Strength |
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Flat Head Profile Flat Head Profile |
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![]() | Standard |
Threading Threading |
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![]() | Fully Threaded |
DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Thread Type Thread Type |
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Thread Fit Thread Fit |
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Hardness Hardness |
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Thread Spacing Thread Spacing |
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Thread Direction Thread Direction |
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About Flat Head Screws
More
Mil. Spec. Alloy Steel Hex Drive Flat Head Screws

Choose these screws for their adherence to strict military standards for material and construction. They're cadmium plated to resist corrosion in wet environments. 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 | Head Dia. | Head Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Each | |
Cadmium-Plated Alloy Steel | ||||||||
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4-40 | ||||||||
1/4" | Fully Threaded | 0.255" | 0.083" | 1/16" | 140,000 | ASTM F835, MS24667-1 | 000000000 | 00000 |
3/8" | Fully Threaded | 0.255" | 0.083" | 1/16" | 140,000 | ASTM F835, MS24667-2 | 000000000 | 0000 |
1/2" | Fully Threaded | 0.255" | 0.083" | 1/16" | 140,000 | ASTM F835, MS24667-3 | 000000000 | 0000 |
3/4" | Fully Threaded | 0.255" | 0.083" | 1/16" | 140,000 | ASTM F835, MS24667-5 | 000000000 | 0000 |
6-32 | ||||||||
3/8" | Fully Threaded | 0.307" | 0.097" | 5/64" | 140,000 | ASTM F835, MS24667-8 | 000000000 | 0000 |
1/2" | Fully Threaded | 0.307" | 0.097" | 5/64" | 140,000 | ASTM F835, MS24667-9 | 000000000 | 0000 |
5/8" | Fully Threaded | 0.307" | 0.097" | 5/64" | 140,000 | ASTM F835, MS24667-10 | 000000000 | 00000 |
3/4" | Fully Threaded | 0.307" | 0.097" | 5/64" | 140,000 | ASTM F835, MS24667-11 | 000000000 | 0000 |
8-32 | ||||||||
3/8" | Fully Threaded | 0.359" | 0.112" | 3/32" | 140,000 | ASTM F835, MS24667-13 | 000000000 | 0000 |
1/2" | Fully Threaded | 0.359" | 0.112" | 3/32" | 140,000 | ASTM F835, MS24667-14 | 000000000 | 0000 |
5/8" | Fully Threaded | 0.359" | 0.112" | 3/32" | 140,000 | ASTM F835, MS24667-15 | 000000000 | 0000 |
1/4"-20 | ||||||||
5/8" | Fully Threaded | 0.531" | 0.161" | 5/32" | 140,000 | ASTM F835, MS24667-29 | 000000000 | 0000 |
3/4" | Fully Threaded | 0.531" | 0.161" | 5/32" | 140,000 | ASTM F835, MS24667-30 | 000000000 | 0000 |
1" | Fully Threaded | 0.531" | 0.161" | 5/32" | 140,000 | ASTM F835, MS24667-31 | 000000000 | 0000 |
5/16"-18 | ||||||||
1" | Fully Threaded | 0.656" | 0.198" | 3/16" | 140,000 | ASTM F835, MS24667-41 | 000000000 | 00000 |
3/8"-16 | ||||||||
1" | Fully Threaded | 0.781" | 0.234" | 7/32" | 140,000 | ASTM F835, MS24667-52 | 000000000 | 00000 |