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About Hex Head Screws and Bolts
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Choose hex head fasteners with the right threading types, thread sizes, and material for your equipment.
Mil. Spec. High-Strength Steel Hex Head Screws
Partially Threaded
Choose these screws for their adherence to strict military standards for material and construction. Made from Grade 8 steel, they can be used in high-stress applications, such as valves, pumps, motors, and automotive suspension systems. They are at least 25% stronger than medium-strength steel screws. The zinc yellow-chromate plating resists corrosion in wet environments. Material meets ASTM A354BD and SAE J429 specifications for quality. Dimensions meet ASME B18.2.1 specifications. Grade 8 steel hex head screws are marked with six radial lines. Length is measured from under the head.
Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Min. Thread Lg. | Thread Spacing  | Wd. | Ht. | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
Zinc Yellow-Chromate Plated Grade 8 Steel | ||||||||||
3/4"-10 | ||||||||||
| 4" | Partially Threaded | 1 3/4" | Coarse | 1 1/8" | 15/32" | 150,000 | ASME B18.2.1, SAE J429, ASTM A354BD, MS90728-195 | 1 | 95362A660 | 000000 |