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MS21318-9
0X1/4 MS21318 Military Round Head Type U Drive Screw Cadmium
Description
Hardened steel screws to make permanent fastenings to ferrous and non-ferrous castings, heavy gauge steel, plastics, etc. Cadmium plated
Specifications
| Country of Origin | USA |
|---|---|
| Dia. (in.) | .075 |
| Diameter | 0.073 in |
| End Application | B-1 aircraft an/tyc-39a; support equipment b-1b aircraft; central message switch hc-130); trainer ec-130e mc-130h (ac-130h ah-1w; aircraft advance attack mh-53e; helicopter f100-pw-200 (f-16a/b/c/d); helicopter aircraft reciprocating m4; engine lamps mk iii; compressor helicopter landing system |
| Fastener Length | 0.250 |
| Head Angle | 100 ? |
| Head Diameter | Between 0.099 inches and 0.113 inches |
| Head Height | Between 0.043 inches and 0.053 inches |
| Head Style | Round Head |
| Industry Standards/Certification | MS21318 |
| Length | 1/4 in |
| Length (in.) | 1/4 |
| Material | Steel |
| NIIN | 00-253-5608 |
| NSN | 5305-00-253-5608 |
| Nondefinitive Specification/Std Data | U type and 1p style |
| Nonmachine Thread Diameter | 0.073 |
| Nonmachine Thread Style | Drive screw (type u) |
| Recommended Drill Size | #51 (.067) |
| Size | 1/4 |
| Surface Treatment | Cadmium |
| Weight | 0.0004 lb |
Cross-reference
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Catalog data updated 2026-07-05. Report a data error