The Stud,stepped, cataloged under National Stock Number 5307-00-902-4252, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is Rolls-Royce Corporation. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-00-902-4252 |
| Primary Part Number | 6841729-143 |
| Item Name | Stud,stepped |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Rolls-Royce Corporation |
| Status | ACTIVE |
| Shank Diameter | 0.279 INCHES MINIMUM AND 0.289 INCHES MAXIMUM IN |
| Thread Length | 0.625 INCHES NOMINAL NUT THREAD IN |
| Thread Length | 0.750 INCHES NOMINAL STUD THREAD IN |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| Style Designator | STEPPED |
| Thread Pitch Diameters | +0.3452 TO 0.3467 INCHES STUD THREAD IN |
| Material Document and Classification | AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.312 INCHES NUT THREAD IN |
| Nominal Thread Size | 0.375 INCHES STUD THREAD IN |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 3A NUT THREAD A |
| Thread Quantity Per Inch | 24 NUT THREAD |
| Thread Quantity Per Inch | 16 STUD THREAD |
| Material | STEEL COMP 8740 |
| Thread Series Designator | UNF 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 |
| Part Number | Manufacturer |
|---|---|
| 6841729-143 PRIMARY | Rolls-Royce Corporation (USA) |
| Reference | Meaning |
|---|---|
| 6841729-143 | 5/9 Secondary reference Allison Transmission Inc Dba Allison Transmission, Inc |
| 6841729-143 | 5/9 Secondary reference General Motors Corp |
NSN 5307-00-902-4252 is a Stud,stepped, manufactured by Rolls-Royce Corporation, classified under FSC 5307, Studs. Status: active.
NSN 5307-00-902-4252 has 1 manufacturer part number on file: 6841729-143 (Rolls-Royce Corporation).
Key specifications for 6841729-143: Shank Diameter: 0.279 INCHES MINIMUM AND 0.289 INCHES MAXIMUM IN; Thread Length: 0.625 INCHES NOMINAL NUT THREAD IN; Thread Length: 0.750 INCHES NOMINAL STUD THREAD IN; Hardness Rating: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM. 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.