The Stud,shouldered and Stepped, cataloged under National Stock Number 5307-01-050-8219, 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 23 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-01-050-8219 |
| Primary Part Number | 6887099-3 |
| Item Name | Stud,shouldered and Stepped |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Rolls-Royce Corporation |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES OVERALL |
| Surface Treatment Document and Classification | AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Nut End Shank Diameter | 0.190 INCHES NOMINAL IN |
| Thread Length | 0.438 INCHES NOMINAL NUT THREAD IN |
| Thread Length | 0.475 INCHES NOMINAL STUD THREAD IN |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| Style Designator | SHOULDERED AND STEPPED |
| 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 | 0.250 INCHES STUD THREAD IN |
| Nominal Thread Size | 0.190 INCHES NUT THREAD IN |
| Shoulder Diameter | 0.355 INCHES NOMINAL IN |
| Stud End Shank Diameter | 0.169 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OVERALL |
| Nut End Shank Length | 0.062 INCHES NOMINAL IN |
| Thread Class | 3A NUT THREAD A |
| Thread Quantity Per Inch | 32 NUT THREAD |
| Thread Quantity Per Inch | 20 STUD THREAD |
| Material | STEEL COMP 8740 |
| Shoulder Length | 0.100 INCHES NOMINAL IN |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) 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 |
|---|---|
| 6887099-3 PRIMARY | Rolls-Royce Corporation (USA) |
| Reference | Meaning |
|---|---|
| 6887099-3 | 5/9 Secondary reference Allison Transmission Inc Dba Allison Transmission, Inc |
NSN 5307-01-050-8219 is a Stud,shouldered and Stepped, manufactured by Rolls-Royce Corporation, classified under FSC 5307, Studs. Status: active.
NSN 5307-01-050-8219 has 1 manufacturer part number on file: 6887099-3 (Rolls-Royce Corporation).
Key specifications for 6887099-3: Surface Finish: 63.0 MICROINCHES OVERALL; Surface Treatment Document and Classification: AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Nut End Shank Diameter: 0.190 INCHES NOMINAL IN; Thread Length: 0.438 INCHES NOMINAL NUT THREAD IN. 23 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.