The Stud,locked in, cataloged under National Stock Number 5307-01-309-4858, 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24 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5307-01-309-4858 |
| Item Name | Stud,locked in |
| FSC / FSG | 5307 / 53 — Studs |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES NUT THD |
| Surface Finish | 63.0 MICROINCHES SHANK |
| Surface Treatment Document and Classification | QQ-P-416 TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Distance From Serrated Portion to Nut End | 0.860 INCHES MINIMUM AND 0.890 INCHES MAXIMUM IN |
| Thread Length | 0.579 INCHES MINIMUM AND 0.609 INCHES MAXIMUM NUT THREAD IN |
| Thread Length | 0.496 INCHES MINIMUM AND 0.566 INCHES MAXIMUM STUD THREAD IN |
| Hardness Rating | 35.0 ROCKWELL C MINIMUM |
| Style Designator | LOCKED IN |
| Material Document and Classification | MIL-S-6049 MIL SPEC SINGLE MATERIAL RESPONSE OR AMS 6322 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 | CADMIUM AND CHROMATE OVERALL |
| Thread Class | 3A NUT THREAD A |
| Thread Class | 3A STUD THREAD A |
| Thread Quantity Per Inch | 16 STUD THREAD |
| Thread Quantity Per Inch | 28 NUT THREAD |
| Material | STEEL COMP 8740 |
| 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 |
|---|---|
| MS51992A803-14 | 2/2 Government specification standardization U.S. Government activity |
NSN 5307-01-309-4858 is a Stud,locked in, classified under FSC 5307, Studs. Status: active.
Key specifications for 5307-01-309-4858: Surface Finish: 32.0 MICROINCHES NUT THD; Surface Finish: 63.0 MICROINCHES SHANK; Surface Treatment Document and Classification: QQ-P-416 TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Distance From Serrated Portion to Nut End: 0.860 INCHES MINIMUM AND 0.890 INCHES MAXIMUM 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.