The Stud,locked in, cataloged under National Stock Number 5307-01-179-9529, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. Government technical data includes 21 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-01-179-9529 |
| Item Name | Stud,locked in |
| FSC / FSG | 5307 / 53 — Studs |
| Status | ACTIVE |
| Distance From Serrated Portion to Nut End | 0.797 INCHES MINIMUM AND 0.827 INCHES MAXIMUM IN |
| Thread Length | 0.505 INCHES MINIMUM AND 0.535 INCHES MAXIMUM STUD THREAD IN |
| Thread Length | 0.522 INCHES MINIMUM AND 0.635 INCHES MAXIMUM NUT THREAD IN |
| Style Designator | LOCKED IN |
| Material Document and Classification | MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR AMS 6415 ASSN STD 2ND MATERIAL RESPONSE |
| Distance From Serrated Portion to End of Stud Thread | 0.230 INCHES NOMINAL IN |
| Serration Included Angle | 102.0 DEGREES NOMINAL |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.375 INCHES NUT THREAD IN |
| Nominal Thread Size | 0.438 INCHES STUD THREAD IN |
| Distance From Serrated Portion to Stud End | 0.750 INCHES NOMINAL IN |
| Locking Feature | RING, LOCK SERRATED |
| Serration Quantity | 24 |
| Thread Class | 3A NUT THREAD A |
| Thread Class | 3A STUD THREAD A |
| Thread Quantity Per Inch | 24 NUT THREAD |
| Thread Quantity Per Inch | 14 STUD THREAD |
| Material | STEEL COMP E4340 OR STEEL COMP 4340 |
| Thread Series Designator | UNF NUT THREAD |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) STUD THREAD |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| SF121-12SN13A | 3/2 Design control — primary reference U.S. Government activity |
NSN 5307-01-179-9529 is a Stud,locked in, classified under FSC 5307, Studs. Status: active.
Key specifications for 5307-01-179-9529: Distance From Serrated Portion to Nut End: 0.797 INCHES MINIMUM AND 0.827 INCHES MAXIMUM IN; Thread Length: 0.505 INCHES MINIMUM AND 0.535 INCHES MAXIMUM STUD THREAD IN; Thread Length: 0.522 INCHES MINIMUM AND 0.635 INCHES MAXIMUM NUT THREAD IN; Style Designator: LOCKED IN. 21 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.