The Stud,locked in, cataloged under National Stock Number 5307-01-268-1308, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-01-268-1308 |
| Item Name | Stud,locked in |
| FSC / FSG | 5307 / 53 — Studs |
| Status | ACTIVE |
| Distance From Serrated Portion to Nut End | 0.461 INCHES NOMINAL IN |
| Thread Length | 0.312 INCHES NOMINAL STUD THREAD IN |
| Style Designator | LOCKED IN |
| Distance From Serrated Portion to End of Stud Thread | 0.037 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.250 INCHES STUD THREAD IN |
| Nominal Thread Size | 0.190 INCHES NUT THREAD IN |
| Distance From Serrated Portion to Stud End | 0.312 INCHES NOMINAL IN |
| Locking Feature | ANY ACCEPTABLE |
| Thread Class | 3A NUT THREAD A |
| Thread Class | 3A STUD THREAD A |
| Thread Quantity Per Inch | 28 STUD THREAD |
| Thread Quantity Per Inch | 32 NUT THREAD |
| Material | STEEL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) 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 |
|---|---|
| 21131-3 | 3/9 Design control — primary reference Stanley Engineered Fastening Llc |
NSN 5307-01-268-1308 is a Stud,locked in, classified under FSC 5307, Studs. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 3020-01-328-0568. Verify interchangeability with system specifications before substitution.
Key specifications for 5307-01-268-1308: Distance From Serrated Portion to Nut End: 0.461 INCHES NOMINAL IN; Thread Length: 0.312 INCHES NOMINAL STUD THREAD IN; Style Designator: LOCKED IN; Overall Length: 0.812 INCHES NOMINAL IN. 16 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.