The Stud,shouldered and Stepped, cataloged under National Stock Number 5307-01-258-6881, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is Lockheed Martin Corporation Div Rotary and Mission Systems. Government technical data includes 19 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 | 5307-01-258-6881 |
| Primary Part Number | 63B304304P2 |
| Item Name | Stud,shouldered and Stepped |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Lockheed Martin Corporation Div Rotary and Mission Systems |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416 TYPE 11 CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.050 INCHES MINIMUM AND 0.070 INCHES MAXIMUM NUT THREAD B IN |
| Thread Length | 2.370 INCHES MINIMUM AND 2.390 INCHES MAXIMUM STUD THREAD IN |
| Style Designator | SHOULDERED AND STEPPED |
| Material Document and Classification | QQ-S-634 FED SPEC SINGLE MATERIAL RESPONSE |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD B |
| Nominal Thread Size | 0.500 INCHES STUD THREAD IN |
| Nominal Thread Size | 0.250 INCHES NUT THREAD B IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Thread Class | 2A STUD THREAD A |
| Thread Class | 2A NUT THREAD B A |
| Thread Quantity Per Inch | 20 NUT THREAD B |
| Thread Quantity Per Inch | 20 STUD THREAD |
| Material | STEEL |
| Distance Across Flats | 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN |
| Shoulder Length | 0.090 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN |
| Thread Series Designator | UNF NUT THREAD B |
| Thread Series Designator | UNF 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 |
|---|---|
| 63B304304P2 PRIMARY | Lockheed Martin Corporation Div Rotary and Mission Systems (USA) |
NSN 5307-01-258-6881 is a Stud,shouldered and Stepped, manufactured by Lockheed Martin Corporation Div Rotary and Mission Systems, classified under FSC 5307, Studs. Status: active.
NSN 5307-01-258-6881 has 1 manufacturer part number on file: 63B304304P2 (Lockheed Martin Corporation Div Rotary and Mission Systems).
Key specifications for 63B304304P2: Surface Treatment Document and Classification: QQ-P-416 TYPE 11 CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.050 INCHES MINIMUM AND 0.070 INCHES MAXIMUM NUT THREAD B IN; Thread Length: 2.370 INCHES MINIMUM AND 2.390 INCHES MAXIMUM STUD THREAD IN; Style Designator: SHOULDERED AND STEPPED. 19 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.