The Stud,locked in, cataloged under National Stock Number 5307-01-387-0076, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 9 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-01-387-0076 |
| Item Name | Stud,locked in |
| FSC / FSG | 5307 / 53 — Studs |
| Status | ACTIVE |
| Distance From Serrated Portion to Nut End | 0.985 INCHES MINIMUM AND 1.015 INCHES MAXIMUM IN |
| Thread Length | 0.531 INCHES NOMINAL STUD THREAD IN |
| Thread Length | 0.579 INCHES MINIMUM AND 0.609 INCHES MAXIMUM NUT THREAD IN |
| Style Designator | LOCKED IN |
| Material Document and Classification | AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE AND AMS 5734 ASSN STD SINGLE MATERIAL RESPONSE |
| Distance From Serrated Portion to End of Stud Thread | 0.127 INCHES MINIMUM AND 0.157 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.375 INCHES STUD THREAD IN |
| Nominal Thread Size | 0.250 INCHES NUT THREAD IN |
| Distance From Serrated Portion to Stud End | 0.653 INCHES MINIMUM AND 0.693 INCHES MAXIMUM IN |
| Locking Feature | RING, LOCK SERRATED |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 2A STUD THREAD A |
| Thread Class | 3A NUT THREAD A |
| Thread Quantity Per Inch | 16 STUD THREAD |
| Thread Quantity Per Inch | 28 NUT THREAD |
| Material | IRON ALLOY 660 |
| 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 |
|---|---|
| MIL-S-45909 | 4/1 Identification reference U.S. Government activity |
| MS51992C803-16 | 2/2 Government specification standardization U.S. Government activity |
NSN 5307-01-387-0076 is a Stud,locked in, classified under FSC 5307, Studs. Status: active.
9 possible matches (shared part number, not a government interchangeability claim): 5307-01-387-0085, 5307-01-398-0331, 5307-01-398-0332. Verify interchangeability with system specifications before substitution.
Key specifications for 5307-01-387-0076: Distance From Serrated Portion to Nut End: 0.985 INCHES MINIMUM AND 1.015 INCHES MAXIMUM IN; Thread Length: 0.531 INCHES NOMINAL STUD THREAD IN; Thread Length: 0.579 INCHES MINIMUM AND 0.609 INCHES MAXIMUM NUT THREAD IN; Style Designator: LOCKED IN. 20 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.