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MS21318-23
4X3/8 MS21318 Military Round Head Type U Drive Screw Cadmium
Description
Fastener Length: 3/8", round head, MS21318 series screw
Specifications
| Fastener Length | 0.375 |
|---|---|
| Features Provided | Casehardened |
| Head Diameter | Between 0.193 inches and 0.211 inches |
| Head Height | Between 0.075 inches and 0.086 inches |
| Head Style | Round Head |
| Length | 3/8 |
| Material | Steel |
| Nonmachine Thread Diameter | 0.114 |
| Nonmachine Thread Style | Drive screw (type u) |
| Size | 4 |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416 type 2 cl 3 federal specification all treatment responses |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- MS21318-23
- MS21318-28
- MS21318-29
- MS21318-48
Cross-reference
Similar parts
Parts with matching key dimensions — often from a different standards family. Candidates for comparison only; verify the full specification before substituting.
- AN530-4-6 AN 3/8 in · Round Head · Steel
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Catalog data updated 2026-07-05. Report a data error