washers › flat washers
MS21299-3
Military Standard Flat Washer
Description
Washer
Specifications
| Hardness Rating | 39.0 rockwell c minimum and 45.0 rockwell c maximum |
|---|---|
| Hole Diameter | 0.191 inches minimum and 0.195 inches maximum |
| Industry Standards/Certification | MS21299 |
| Material | Steel |
| Material Specification | Mil-s-6758 mil spec single material response or mil-s-18729 mil spec single material response |
| NIIN | 01-126-1217 |
| NSN | 5310-01-126-1217 |
| Overall Diameter | 0.377 inches minimum and 0.387 inches maximum |
| Surface Treatment | Cadmium plated |
| Surface Treatment Specification | Qq-p-416,ty 2,cl 2 fed spec single treatment response |
| Thickness | 0.052 inches minimum and 0.072 inches maximum |
| Type | Plain |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
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.
- MS21299-3K MS #10 · 25/64 in · CRES
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Catalog data updated 2026-07-05. Report a data error