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MS21299C9
Military Standard Washer
Description
Hole Diameter: 5/8
Specifications
| Hardness Rating | 39.0 rockwell c minimum and 45.0 rockwell c maximum |
|---|---|
| Hole Diameter | 0.564 inches minimum and 0.568 inches maximum |
| Material | Steel |
| Material Specification | Mil-s-6758&jdamil-s-18729 mil spec single material response |
| Material Thickness | 0.071 inches minimum and 0.085 inches maximum |
| Outside Diameter | 1.059 inches minimum and 1.069 inches maximum |
| Recess Angle | 90.0 degrees |
| Recess Diameter | 0.684 inches minimum and 0.694 inches maximum |
| Special Features | Spec calls this: washer, countersunk, for use with bolts and nuts up to and including 260 ksi flu |
| Style Designator | 15 recessed |
| Surface Finish | 125.0 microinches all surfaces |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416, type ii, class 2 fed spec all treatment responses |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
Similar parts
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Catalog data updated 2026-07-05. Report a data error