The Stud,locked in, cataloged under National Stock Number 5307-01-123-7166, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-01-123-7166 |
| Item Name | Stud,locked in |
| FSC / FSG | 5307 / 53 — Studs |
| Status | ACTIVE |
| Distance From Serrated Portion to Nut End | 1.235 INCHES MINIMUM AND 1.265 INCHES MAXIMUM IN |
| Thread Length | 0.505 INCHES MINIMUM AND 0.535 INCHES MAXIMUM STUD THREAD IN |
| Thread Length | 0.605 INCHES MINIMUM AND 0.635 INCHES MAXIMUM NUT THREAD IN |
| Style Designator | LOCKED IN |
| Distance From Serrated Portion to End of Stud Thread | 0.575 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN |
| Distance From Serrated Portion to Stud End | 1.110 INCHES MINIMUM AND 1.140 INCHES MAXIMUM IN |
| Locking Feature | RING, LOCK SERRATED |
| Serration Quantity | 24 |
| Thread Class | 3A NUT THREAD A |
| 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 |
|---|---|
| SF121-18TB20AE0 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| SF121-18TB20A-EO301 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5307-01-123-7166 is a Stud,locked in, classified under FSC 5307, Studs. Status: active.
Key specifications for 5307-01-123-7166: Distance From Serrated Portion to Nut End: 1.235 INCHES MINIMUM AND 1.265 INCHES MAXIMUM IN; Thread Length: 0.505 INCHES MINIMUM AND 0.535 INCHES MAXIMUM STUD THREAD IN; Thread Length: 0.605 INCHES MINIMUM AND 0.635 INCHES MAXIMUM NUT THREAD IN; Style Designator: LOCKED IN. 9 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.