The Stud,stepped, cataloged under National Stock Number 5307-00-177-7591, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is Allison Transmission Inc Dba Allison Transmission, Inc. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-00-177-7591 |
| Primary Part Number | 6864163-03 |
| Item Name | Stud,stepped |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Allison Transmission Inc Dba Allison Transmission, Inc |
| Status | ACTIVE |
| Shank Diameter | 0.243 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN |
| Surface Finish | 32.0 MICROINCHES STUD THD |
| Surface Treatment Document and Classification | AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.414 INCHES MINIMUM AND 0.419 INCHES MAXIMUM STUD THREAD IN |
| Thread Length | 0.435 INCHES MINIMUM AND 0.450 INCHES MAXIMUM NUT THREAD IN |
| Hardness Rating | 28.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM |
| Style Designator | STEPPED |
| Material Document and Classification | AMS 6415 ASSN STD SINGLE MATERIAL RESPONSE |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL |
| 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 |
|---|---|
| 6864163-03 | Rolls-Royce Airlines (GBR) |
| 6864163-03 PRIMARY | Allison Transmission Inc Dba Allison Transmission, Inc (USA) |
NSN 5307-00-177-7591 is a Stud,stepped, manufactured by Allison Transmission Inc Dba Allison Transmission, Inc, classified under FSC 5307, Studs. Status: active.
NSN 5307-00-177-7591 has 2 manufacturer part numbers on file: 6864163-03 (Rolls-Royce Airlines), 6864163-03 (Allison Transmission Inc Dba Allison Transmission, Inc).
Key specifications for 6864163-03: Shank Diameter: 0.243 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN; Surface Finish: 32.0 MICROINCHES STUD THD; Surface Treatment Document and Classification: AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.414 INCHES MINIMUM AND 0.419 INCHES MAXIMUM STUD THREAD IN. 12 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.