washers › flat washers
MS21299-C8
Military Standard Flat Washer
Description
Hole Diameter: 1/2", MS21299 series washer
Specifications
| Hardness Rating | 39.0 rockwell c minimum and 45.0 rockwell c maximum |
|---|---|
| Hole Diameter | 0.501 inches minimum and 0.505 inches maximum |
| Material | Steel |
| Material Specification | Mil-s-6758 mil spec single material response or mil-s-18729 mil spec single material response |
| Material Thickness | 0.071 inches minimum and 0.085 inches maximum |
| Outside Diameter | 0.940 inches minimum and 0.950 inches maximum |
| Recess Angle | 89.0 degrees minimum and 91.0 degrees maximum |
| Recess Diameter | 0.622 inches minimum and 0.632 inches maximum |
| Style Designator | 15 recessed |
| Surface Treatment | Cadmium plated |
| Surface Treatment Specification | Qq-p-416,ty 2,cl 2 fed spec single treatment response |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- MS21299-C3
- MS21299-C8
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.
- 4D0033P8 Commercial 1/2 · 15/16 in · Iron
- MS14183-C8 MS 1/2 · 15/16 in · Nickel
- MS14183C8 MS 1/2 · 15/16 in · Nickel
- MS14183L-C8 MS 1/2 · 15/16 in · Nickel
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Catalog data updated 2026-07-05. Report a data error