The Stud,locked in, cataloged under National Stock Number 5307-01-140-6378, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. Government technical data includes 23 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-01-140-6378 |
| Item Name | Stud,locked in |
| FSC / FSG | 5307 / 53 — Studs |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES STUD THD |
| Surface Finish | 32.0 MICROINCHES NUT THD |
| Distance From Serrated Portion to Nut End | 0.797 INCHES MINIMUM AND 0.827 INCHES MAXIMUM IN |
| Thread Length | 0.735 INCHES MINIMUM AND 0.765 INCHES MAXIMUM NUT THREAD IN |
| Thread Length | 0.658 INCHES MINIMUM AND 0.728 INCHES MAXIMUM STUD THREAD IN |
| Style Designator | LOCKED IN |
| Thread Pitch Diameters | +0.4694 TO 0.4711 INCHES STUD THREAD IN |
| Material Document and Classification | AMS5734 ASSN STD SINGLE MATERIAL RESPONSE |
| Distance From Serrated Portion to End of Stud Thread | 0.185 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN |
| Serration Included Angle | 101.0 DEGREES MINIMUM AND 104.0 DEGREES MAXIMUM |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.375 INCHES NUT THREAD IN |
| Nominal Thread Size | 0.500 INCHES STUD THREAD IN |
| Distance From Serrated Portion to Stud End | 0.873 INCHES MINIMUM AND 0.913 INCHES MAXIMUM IN |
| Locking Feature | RING, LOCK SERRATED |
| Serration Quantity | 24 |
| Thread Class | 3A NUT THREAD A |
| Thread Quantity Per Inch | 24 NUT THREAD |
| Thread Quantity Per Inch | 20 STUD THREAD |
| Material | IRON ALLOY 660 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) 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 |
|---|---|
| MS51992C645-13 | 2/2 Government specification standardization U.S. Government activity |
| SF5902C645-13 | 5/1 Secondary reference U.S. Government activity |
| 10116425 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5307-01-140-6378 is a Stud,locked in, classified under FSC 5307, Studs. Status: active.
Key specifications for 5307-01-140-6378: Surface Finish: 63.0 MICROINCHES STUD THD; Surface Finish: 32.0 MICROINCHES NUT THD; Distance From Serrated Portion to Nut End: 0.797 INCHES MINIMUM AND 0.827 INCHES MAXIMUM IN; Thread Length: 0.735 INCHES MINIMUM AND 0.765 INCHES MAXIMUM NUT THREAD IN. 23 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.