The Bolt,internally Relieved Body, cataloged under National Stock Number 5306-01-367-9255, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 16 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 | 5306-01-367-9255 |
| Primary Part Number | 803-5001048 PIECE 77 |
| Item Name | Bolt,internally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Head Height | 1.435 INCHES NOMINAL IN |
| Fastener Length | 1.860 INCHES MINIMUM AND 1.890 INCHES MAXIMUM IN |
| Thread Length | 0.425 INCHES MINIMUM AND 0.455 INCHES MAXIMUM IN |
| Style Designator | COUNTERBORE UNTHREADED |
| Material Document and Classification | QQ-N-281 CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 1.125 INCHES IN |
| Counterbore Depth | 0.435 INCHES NOMINAL IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Counterbore Diameter | 0.437 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN |
| Width Between Flats | 1.250 INCHES NOMINAL IN |
| Concentric Hole Diameter | 0.781 INCHES MINIMUM AND 0.782 INCHES MAXIMUM IN |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 12 |
| Material | NICKEL ALLOY 400 OVERALL |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| 803-5001048 PIECE 77 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5306-01-367-9255 is a Bolt,internally Relieved Body, manufactured by Naval Sea Systems Command, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-367-9255 has 1 manufacturer part number on file: 803-5001048 PIECE 77 (Naval Sea Systems Command).
Key specifications for 803-5001048 PIECE 77: Head Height: 1.435 INCHES NOMINAL IN; Fastener Length: 1.860 INCHES MINIMUM AND 1.890 INCHES MAXIMUM IN; Thread Length: 0.425 INCHES MINIMUM AND 0.455 INCHES MAXIMUM IN; Style Designator: COUNTERBORE UNTHREADED. 16 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.