The Stud,shouldered and Stepped, cataloged under National Stock Number 5307-00-342-7921, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5307-00-342-7921 |
| Item Name | Stud,shouldered and Stepped |
| FSC / FSG | 5307 / 53 — Studs |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES OVERALL |
| Cotter Pin Hole Diameter | 0.076 INCHES NOMINAL FIRST HOLE IN |
| Thread Length | 0.273 INCHES MINIMUM STUD THREAD IN |
| Thread Length | 0.354 INCHES MINIMUM NUT THREAD IN |
| Style Designator | SHOULDERED AND STEPPED |
| Material Document and Classification | MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.500 INCHES STUD THREAD IN |
| Shoulder Diameter | 0.625 INCHES NOMINAL IN |
| Thread Class | 3A NUT THREAD A |
| Thread Class | 3A STUD THREAD A |
| Thread Quantity Per Inch | 20 STUD THREAD |
| Material | STEEL COMP 4130 |
| Shoulder Length | 0.093 INCHES MINIMUM AND 0.098 INCHES MAXIMUM IN |
| Thread Series Designator | UNF STUD THREAD |
| Distance From Cotter Pin Hole Centerline to Nut End | 0.156 INCHES NOMINAL FIRST HOLE IN |
| 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 |
|---|---|
| 2488318 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5307-00-342-7921 is a Stud,shouldered and Stepped, classified under FSC 5307, Studs. Status: active.
Key specifications for 5307-00-342-7921: Surface Finish: 125.0 MICROINCHES OVERALL; Cotter Pin Hole Diameter: 0.076 INCHES NOMINAL FIRST HOLE IN; Thread Length: 0.273 INCHES MINIMUM STUD THREAD IN; Thread Length: 0.354 INCHES MINIMUM NUT THREAD IN. 17 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.