washers › flat washers
MS21299-5
Military Standard Flat Washer
Description
Washer
Specifications
| Hardness Rating | Between 39.0 rockwell c and 45.0 rockwell c |
|---|---|
| Hole Diameter | Between 0.314 inches and 0.318 inches |
| Industry Standards/Certification | MS21299 |
| Material | Steel |
| Material Specification | Mil-s-6758 military specification single material response or mil-s-18729 military specification single material response |
| NIIN | 01-153-9304 |
| NSN | 5310-01-153-9304 |
| Overall Diameter | Between 0.588 inches and 0.598 inches |
| Surface Treatment | Cadmium plated |
| Surface Treatment Specification | Cl 2 federal specification single treatment response type 2 qq-p-416 |
| Thickness | Between 0.052 inches and 0.072 inches |
| 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.
- MS21299-5K MS 5/16 · 19/32 in · Steel
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Catalog data updated 2026-07-05. Report a data error