The Stud,shouldered and Stepped, cataloged under National Stock Number 5307-01-129-2787, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5307-01-129-2787 |
| Item Name | Stud,shouldered and Stepped |
| FSC / FSG | 5307 / 53 — Studs |
| Status | ACTIVE |
| Nut End Shank Diameter | 0.408 INCHES MINIMUM AND 0.418 INCHES MAXIMUM IN |
| Thread Length | 0.430 INCHES MINIMUM AND 0.440 INCHES MAXIMUM STUD THREAD IN |
| Thread Length | 0.700 INCHES NOMINAL NUT THREAD IN |
| Style Designator | SHOULDERED AND STEPPED |
| Material Document and Classification | ASTM A322 ASSN STD ALL MATERIAL RESPONSES OR ASTM A331 ASSN STD ALL MATERIAL RESPONSES |
| Thread Direction | LEFT-HAND NUT THREAD |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Nominal Thread Size | 0.500 INCHES NUT THREAD IN |
| Nominal Thread Size | 0.562 INCHES STUD THREAD IN |
| Nut End Shank Length | 0.404 INCHES MINIMUM AND 0.434 INCHES MAXIMUM IN |
| Thread Class | 2A STUD THREAD A |
| Thread Class | 2A NUT THREAD A |
| Thread Quantity Per Inch | 12 STUD THREAD |
| Thread Quantity Per Inch | 20 NUT THREAD |
| Material | STEEL COMP 4130 OR STEEL COMP 4140 OR STEEL COMP 4340 |
| Shoulder Length | 0.156 INCHES NOMINAL IN |
| Thread Series Designator | UNF NUT THREAD |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) 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 |
|---|---|
| 4188385 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5307-01-129-2787 is a Stud,shouldered and Stepped, classified under FSC 5307, Studs. Status: active.
Key specifications for 5307-01-129-2787: Nut End Shank Diameter: 0.408 INCHES MINIMUM AND 0.418 INCHES MAXIMUM IN; Thread Length: 0.430 INCHES MINIMUM AND 0.440 INCHES MAXIMUM STUD THREAD IN; Thread Length: 0.700 INCHES NOMINAL NUT THREAD IN; Style Designator: SHOULDERED AND STEPPED. 18 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.