inserts › screw thread inserts
MS21209C4-30
Military Standard Screw Thread Insert
Description
Thread Size: 1/4", MS21209 series insert
Specifications
| Insert Size | 0.310 in. min 0.330 in. max free od |
|---|---|
| Length | 0.750 |
| Special Features | Grip coil qty can be 1 or 2.5 |
| Style Designator | Coil |
| Thread Class | 3b |
| Thread Qty | 20 |
| Thread Qty Per Inch (tpi) | 20 |
| Thread Series | UNC |
| Thread Series Designator | Unc (coarse thread) |
| Thread Size | 0.250 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
No interchangeable or dimensionally similar parts are on record for MS21209C4-30. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error