The Stud,locked in, cataloged under National Stock Number 5307-00-186-0176, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. Government technical data includes 24 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5307-00-186-0176 |
| Item Name | Stud,locked in |
| FSC / FSG | 5307 / 53 — Studs |
| Status | ACTIVE |
| Distance From Serrated Portion to Nut End | 0.940 INCHES NOMINAL IN |
| Thread Length | 0.560 INCHES NOMINAL NUT THREAD IN |
| Thread Length | 0.450 INCHES NOMINAL STUD THREAD IN |
| Style Designator | LOCKED IN |
| Thread Pitch Diameters | +0.3358 TO 0.3378 INCHES STUD THREAD IN |
| Material Document and Classification | QQ-S-7633,CLASS 440 A FED SPEC SINGLE MATERIAL RESPONSE A |
| Distance From Serrated Portion to End of Stud Thread | 0.240 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.312 INCHES NUT THREAD IN |
| Nominal Thread Size | 0.375 INCHES STUD THREAD IN |
| Shoulder Diameter | 0.429 INCHES MINIMUM AND 0.434 INCHES MAXIMUM IN |
| Distance From Serrated Portion to Stud End | 0.690 INCHES NOMINAL IN |
| Locking Feature | RING, LOCK SERRATED |
| Serration Quantity | 6 |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3A NUT THREAD A |
| Thread Class | 3A STUD THREAD A |
| Thread Quantity Per Inch | 24 NUT THREAD |
| Thread Quantity Per Inch | 16 STUD THREAD |
| Material | STEEL |
| Length From Serrated Portion Through Shoulder | 0.147 INCHES NOMINAL IN |
| 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 |
|---|---|
| SHF111-11SM15A | 3/2 Design control — primary reference U.S. Government activity |
NSN 5307-00-186-0176 is a Stud,locked in, classified under FSC 5307, Studs. Status: active.
Key specifications for 5307-00-186-0176: Distance From Serrated Portion to Nut End: 0.940 INCHES NOMINAL IN; Thread Length: 0.560 INCHES NOMINAL NUT THREAD IN; Thread Length: 0.450 INCHES NOMINAL STUD THREAD IN; Style Designator: LOCKED IN. 24 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.