fittings › threaded tube fitting plugs
MS21913D2
Military Standard Threaded Tube Fitting Plug
Description
Plug
Specifications
| Connection Style | Flareless |
|---|---|
| Head Height | 0.156 inches minimum and 0.188 inches maximum |
| Material | Aluminum |
| Material Specification | Qq-a-225/6 fed spec single material response |
| NIIN | 00-540-2231 |
| NSN | 4730-00-540-2231 |
| Overall Length | 0.531 inches minimum and 0.562 inches maximum |
| Seat Angle | 6.0 degrees |
| Specification Data | 81343-as21913 government standard |
| Style Designator | Plug, tube fitting flareless (note: drilled hole is optional should not be considered as a separating characteristic) |
| Surface Treatment | Anodize |
| Surface Treatment Specification | Mil-a-8625,ty 2,cl 1 mil spec single treatment response |
| Thread Class | 3a external |
| Thread Direction | Right-hand external |
| Thread Series Designator | Unjf external |
| Thread Size | 0.312 inches external |
| Weight | .005 lb |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
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.
- MS21913-2 MS 5/16 in · Steel
- MS21913V2P MS 5/16 in · CRES
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Catalog data updated 2026-07-05. Report a data error