The Stud,shouldered and Stepped, cataloged under National Stock Number 5307-00-880-5671, 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 20 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-00-880-5671 |
| Primary Part Number | 6860637-2 |
| Item Name | Stud,shouldered and Stepped |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Allison Transmission Inc Dba Allison Transmission, Inc |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES OVERALL |
| Thread Length | 0.625 INCHES MAXIMUM STUD THREAD IN |
| Thread Length | 0.562 INCHES MINIMUM AND 0.645 INCHES MAXIMUM NUT THREAD IN |
| Style Designator | SHOULDERED AND STEPPED |
| Thread Pitch Diameters | +0.2835 TO 0.2845 INCHES STUD THREAD IN |
| Material Document and Classification | AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.250 INCHES NUT THREAD IN |
| Nominal Thread Size | 0.312 INCHES STUD THREAD IN |
| Shoulder Diameter | 0.373 INCHES MINIMUM AND 0.374 INCHES MAXIMUM IN |
| Stud End Shank Diameter | 0.227 INCHES NOMINAL IN |
| Nut End Shank Length | 1.315 INCHES NOMINAL IN |
| Thread Class | 3A NUT THREAD A |
| Thread Quantity Per Inch | 18 STUD THREAD |
| Thread Quantity Per Inch | 28 NUT THREAD |
| Material | STEEL |
| Shoulder Length | 0.200 INCHES NOMINAL IN |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) STUD THREAD |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) NUT 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 |
|---|---|
| 6860637-2 PRIMARY | Allison Transmission Inc Dba Allison Transmission, Inc (USA) |
NSN 5307-00-880-5671 is a Stud,shouldered and Stepped, manufactured by Allison Transmission Inc Dba Allison Transmission, Inc, classified under FSC 5307, Studs. Status: active.
NSN 5307-00-880-5671 has 1 manufacturer part number on file: 6860637-2 (Allison Transmission Inc Dba Allison Transmission, Inc).
Key specifications for 6860637-2: Surface Finish: 32.0 MICROINCHES OVERALL; Thread Length: 0.625 INCHES MAXIMUM STUD THREAD IN; Thread Length: 0.562 INCHES MINIMUM AND 0.645 INCHES MAXIMUM NUT THREAD IN; Style Designator: SHOULDERED AND STEPPED. 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.