inserts › screw thread inserts
MS21209F4-15
Helicoil Insert
Description
Length: 0.375", thread: 1/4-28, helicoil, corrosion resistant steel, fine thread, MS21209 series insert
Specifications
| Insert Size | 0.256 inch max 0.236 inch min |
|---|---|
| Length | 0.285 |
| Material | CRES |
| NIIN | 00-800-7874 |
| NSN | 5325-00-800-7874 |
| Nominal Diameter | 0.250 |
| Nominal Length | 0.375 |
| Pre-Packaged Bag Quantity | 100 |
| Special Features | Flight safety critical aircraft part |
| Style Designator | Coil |
| Surface Treatment | Passivate |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread Length | 0.285 |
| Thread Qty | 32 |
| Thread Qty Per Inch (tpi) | 32 |
| Thread Series | UNF |
| Thread Series Designator | Unf (fine thread) |
| Thread Size | 0.190, 1/4-28 |
| Weight | 0.002 lb |
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 MS21209F4-15 — functionally equivalent.
- MS21209F1-15 Same NSN #10-32 · 9/32 in · CRES
Similar parts
Parts with matching key dimensions — often from a different standards family. Candidates for comparison only; verify the full specification before substituting.
- NAS1130-3L15D NAS #10-32 · 9/32 in · CRES
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Catalog data updated 2026-07-05. Report a data error