washers › flat washers
MS21206-6
Military Standard Flat Washer
Description
Hole Diameter: 3/8", Diameter: 5/8", cadmium plated steel
Specifications
| Hardness Rating | Between 38.0 rockwell c and 45.0 rockwell c |
|---|---|
| Hole Diameter | Between 0.376 inches and 0.380 inches |
| Material | Steel |
| Material Specification | Mil-s-6758 military specification 1st material response and mil-s-18729 military specification 2nd material response |
| Overall Diameter | Between 0.667 inches and 0.679 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 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
Interchangeable
Parts that share a National Stock Number or are listed as an alternate for MS21206-6 — functionally equivalent.
- MS21299-6 Listed alternate 3/8 · 23/32 in · Steel
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Catalog data updated 2026-07-05. Report a data error