Filter by
System of Measurement
Threading
Thread Size
Fastener Strength Grade/Class
Fastener Head Type
Material
Thread Spacing
Thread Type
Military Specification
Thread Direction
Specifications Met
Hex Head Screw Identification Number
DFARS Specialty Metals
Export Control Classification Number (ECCN)
Hardness
RoHS
Tensile Strength
Certification
Drive Style
About Hex Head Screws and Bolts
More
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 | ||||||||||
1/2"-13 | ||||||||||
| 4" | Partially Threaded | 1 1/4" | Coarse | 3/4" | 5/16" | 150,000 | ASME B18.2.1, SAE J429, ASTM A354BD, MS90728-123 | 1 | 000000000 | 000000 |