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About Socket Head Screws
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Mil. Spec. 18-8 Stainless Steel Socket Head Screws
Fully Threaded
Choose these screws for their adherence to strict military standards for material and construction. Dimensions meet Fed. Spec. FF-S-86 specifications. Screws may be mildly magnetic. Length is measured from under the head.
Coarse threads are the industry standard; choose these screws if you don’t know the threads per inch.
Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Thread Spacing  | Dia. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | ||||||||||
1/4"-20 | ||||||||||
| 1/2" | Fully Threaded | Coarse | 3/8" | 1/4" | 3/16" | 80,000 | MS16995-48, NAS1352C4-8, NASM16995, Fed. Spec. FF-S-86 | 5 | 000000000 | 00000 |