The Stud,locked in, cataloged under National Stock Number 5307-01-371-3676, 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21 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5307-01-371-3676 |
| Item Name | Stud,locked in |
| FSC / FSG | 5307 / 53 — Studs |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416 TY 2 CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| Distance From Serrated Portion to Nut End | 1.173 INCHES MINIMUM AND 1.203 INCHES MAXIMUM IN |
| Thread Length | 0.620 INCHES NOMINAL NUT THREAD IN |
| Thread Length | 0.520 INCHES NOMINAL STUD THREAD IN |
| Style Designator | LOCKED IN |
| Thread Pitch Diameters | +0.3926 TO 0.3946 INCHES STUD THREAD IN |
| Material Document and Classification | MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE |
| Distance From Serrated Portion to End of Stud Thread | 0.230 INCHES NOMINAL IN |
| 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 | 1.062 INCHES NOMINAL IN |
| Locking Feature | RING, LOCK SERRATED |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Thread Class | 3A NUT THREAD A |
| Thread Quantity Per Inch | 24 NUT THREAD |
| Thread Quantity Per Inch | 14 STUD THREAD |
| Material | STEEL COMP 4130 |
| Thread Series Designator | UNF NUT THREAD |
| Thread Series Designator | UNS 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 |
|---|---|
| SF121-17SA19A | 3/2 Design control — primary reference U.S. Government activity |
NSN 5307-01-371-3676 is a Stud,locked in, classified under FSC 5307, Studs. Status: active.
Key specifications for 5307-01-371-3676: Surface Treatment Document and Classification: QQ-P-416 TY 2 CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL; Distance From Serrated Portion to Nut End: 1.173 INCHES MINIMUM AND 1.203 INCHES MAXIMUM IN; Thread Length: 0.620 INCHES NOMINAL NUT THREAD IN; Thread Length: 0.520 INCHES NOMINAL STUD THREAD 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.