washers › recessed washers
MS21299C7
0.4375 Inch Nominal Size MS21299 Countersunk Washer
Description
Hole Diameter: 1/2
Specifications
| Hardness Rating | Between 39.0 rockwell c and 45.0 rockwell c |
|---|---|
| Hole Diameter | Between 0.439 inches and 0.443 inches |
| Industry Standards/Certification | MS21299 |
| Material | Steel |
| Material Specification | Mil-s-6758 military specification single material response and mil-s-18729 military specification single material response |
| Material Thickness | Between 0.071 inches and 0.085 inches |
| Outside Diameter | Between 0.821 inches and 0.831 inches |
| Recess Angle | 90.0 degrees |
| Recess Diameter | Between 0.539 inches and 0.569 inches |
| Style Designator | 15 recessed |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Class 2 federal specification single treatment response type 2 qq-p-416 |
| Type | Countersunk |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
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Catalog data updated 2026-07-05. Report a data error