The Stud,stepped, cataloged under National Stock Number 5307-00-902-5220, 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 20 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-00-902-5220 |
| Primary Part Number | 6841732-189 |
| 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 |
| Cotter Pin Hole Diameter | 0.065 INCHES MINIMUM AND 0.072 INCHES MAXIMUM FIRST HOLE IN |
| Thread Length | 0.625 INCHES MINIMUM NUT THREAD IN |
| Thread Length | 0.750 INCHES MINIMUM STUD THREAD IN |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| Style Designator | STEPPED |
| Thread Pitch Diameters | +0.3482 TO 0.3497 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 | UNIFIED NATIONAL JOINT FINE (UNJF) NUT THREAD |
| Thread Series Designator | UNS STUD THREAD |
| Distance From Cotter Pin Hole Centerline to Nut End | 0.110 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 |
| Part Number | Manufacturer |
|---|---|
| 6841732-189 | United Precision Products Co., Inc. (USA) |
| 6841732-189 | General Motors Corp (USA) |
| 6841732-189 PRIMARY | Rolls-Royce Corporation (USA) |
| Reference | Meaning |
|---|---|
| 6841732-189 | 5/9 Secondary reference Allison Transmission Inc Dba Allison Transmission, Inc |
NSN 5307-00-902-5220 is a Stud,stepped, manufactured by Rolls-Royce Corporation, classified under FSC 5307, Studs. Status: active.
NSN 5307-00-902-5220 has 3 manufacturer part numbers on file: 6841732-189 (United Precision Products Co., Inc.), 6841732-189 (General Motors Corp), 6841732-189 (Rolls-Royce Corporation).
Key specifications for 6841732-189: Shank Diameter: 0.279 INCHES MINIMUM AND 0.289 INCHES MAXIMUM IN; Cotter Pin Hole Diameter: 0.065 INCHES MINIMUM AND 0.072 INCHES MAXIMUM FIRST HOLE IN; Thread Length: 0.625 INCHES MINIMUM NUT THREAD IN; Thread Length: 0.750 INCHES MINIMUM STUD THREAD 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.