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About Hex Head Screws and Bolts
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Choose a hex head fastener with the right threading, thread size, material, and strength for your equipment.
Mil. Spec. Medium-Strength Steel Hex Head Screws
Partially Threaded
Choose these screws for their adherence strict military standards for material and construction. Made from Grade 5 steel, they’re suitable for fastening most machinery and equipment. The cadmium plating provides good corrosion resistance to salt water. Grade 5 steel hex head screws are marked with three 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. | |
Cadmium-Plated Grade 5 Steel | ||||||||||
1/2"-13 | ||||||||||
| 4" | Partially Threaded | 1 1/4" | Coarse | 3/4" | 5/16" | 120,000 | MS90725-123 | 1 | 99894A447 | 00000 |