The Stud,locked in, cataloged under National Stock Number 5307-01-331-0546, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-01-331-0546 |
| Item Name | Stud,locked in |
| FSC / FSG | 5307 / 53 — Studs |
| Status | ACTIVE |
| Thread Length | 0.485 INCHES MINIMUM STUD THREAD IN |
| Thread Length | 0.610 INCHES MINIMUM NUT THREAD IN |
| Style Designator | LOCKED IN |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Distance From End of Stud End Threads to Nut End | 0.845 INCHES MINIMUM IN |
| Nominal Thread Size | 0.375 INCHES NUT THREAD IN |
| Nominal Thread Size | 0.563 INCHES STUD THREAD IN |
| Locking Feature | KEY INSERTS |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 2A STUD THREAD A |
| Thread Class | 3A NUT THREAD A |
| Thread Quantity Per Inch | 12 STUD THREAD |
| Thread Quantity Per Inch | 24 NUT THREAD |
| Material | STEEL CORROSION RESISTING |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) STUD THREAD |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) NUT 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 |
|---|---|
| MS51834A205D14 | 3/2 Design control — primary reference U.S. Government activity |
| MS51834A205D14 | 5/9 Secondary reference U.S. Government activity |
NSN 5307-01-331-0546 is a Stud,locked in, classified under FSC 5307, Studs. Status: active.
Key specifications for 5307-01-331-0546: Thread Length: 0.485 INCHES MINIMUM STUD THREAD IN; Thread Length: 0.610 INCHES MINIMUM NUT THREAD IN; Style Designator: LOCKED IN; Overall Length: 1.345 INCHES MINIMUM IN. 17 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.