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MS21921-3
Military Standard Tube Coupling Nut
Description
Nut
Specifications
| Diameter C Tolerance | -000 in |
|---|---|
| Dimension A | 0.58 in |
| Dimension A Tolerance | +0.010 in |
| Dimension B | 0.10 in |
| Dimension B Tolerance | +0.010 in |
| Dimension C | 0.427 in |
| Dimension H | 0.438 in |
| Industry Standards/Certification | MIL-S-8879 |
| Material | Steel |
| Material Specification | Aisa/sae 1137 or 1141 federal standard single material response 66 |
| NIIN | 00-289-8637 |
| NSN | 4730-00-289-8637 |
| Nut Height | 0.578 |
| Nut Style | Tube coupling |
| Seat Angle | 45.00 degrees |
| Specification Data | 96906-ms21921 government standard |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Cl 2 federal specification single treatment response type 2 qq-p-416 |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread Qty | 24 |
| Thread Qty Per Inch (tpi) | 24 |
| Thread Series | Unf (fine thread) |
| Thread Size | 0.375 |
| Thread T (MIL-S-8879) | 0.3750-24 |
| Tube Outside Diameter | 3/16 in |
| Weight | 0.01 lb |
| Width Across Flats | 0.438 |
Cross-reference
No interchangeable or dimensionally similar parts are on record for MS21921-3. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error