The Stud,locked in, cataloged under National Stock Number 5307-01-255-6622, 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20 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-01-255-6622 |
| Item Name | Stud,locked in |
| FSC / FSG | 5307 / 53 — Studs |
| Status | ACTIVE |
| Thread Length | 0.625 INCHES NOMINAL NUT THREAD IN |
| Thread Length | 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM STUD THREAD IN |
| Style Designator | LOCKED IN |
| Features Provided | FLUX |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.312 INCHES STUD THREAD IN |
| Nominal Thread Size | 0.190 INCHES NUT THREAD IN |
| Shoulder Diameter | 0.231 INCHES MINIMUM AND 0.241 INCHES MAXIMUM IN |
| Locking Feature | RING, LOCK KEYED |
| Thread Class | 3A NUT THREAD A |
| Thread Class | 3A STUD THREAD A |
| Distance From Shoulder Portion to Nut End | 0.700 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN |
| Thread Quantity Per Inch | 32 NUT THREAD |
| Thread Quantity Per Inch | 24 STUD THREAD |
| Material | STEEL COMP 420 AND STEEL CORROSION RESISTING |
| Shoulder Length | 0.035 INCHES MINIMUM AND 0.045 INCHES MAXIMUM IN |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) STUD THREAD |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) NUT THREAD |
| Furnished Items and Quantity | KEYRING |
| 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 |
|---|---|
| 21197-7 | 3/9 Design control — primary reference Stanley Engineered Fastening Llc |
NSN 5307-01-255-6622 is a Stud,locked in, classified under FSC 5307, Studs. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5340-01-544-2358. Verify interchangeability with system specifications before substitution.
Key specifications for 5307-01-255-6622: Thread Length: 0.625 INCHES NOMINAL NUT THREAD IN; Thread Length: 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM STUD THREAD IN; Style Designator: LOCKED IN; Overall Length: 1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM 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.