The Bolt,internally Relieved Body, cataloged under National Stock Number 5306-01-369-0769, 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 22 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 | 5306-01-369-0769 |
| Primary Part Number | 6658757-1 |
| Item Name | Bolt,internally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Head Height | 0.375 INCHES MINIMUM AND 0.378 INCHES MAXIMUM IN |
| Fastener Length | 0.814 INCHES MINIMUM AND 0.820 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | TT-C-490 TY 1 ASSN STD 1ST TREATMENT RESPONSE OR DOD-P-132 TY M CL 1 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| Internal Thread Length | 1.192 INCHES NOMINAL CONCENTRIC HOLE IN |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) CONCENTRIC HOLE |
| Internal Thread Direction | RIGHT-HAND CONCENTRIC HOLE |
| Thread Length | 0.617 INCHES MINIMUM AND 0.633 INCHES MAXIMUM IN |
| Hardness Rating | 320.0 BRINELL STANDARD MINIMUM AND 360.0 BRINELL STANDARD MAXIMUM OVERALL |
| Threads Per Inch | 18 CONCENTRIC HOLE |
| Style Designator | CONCENTRIC HOLE THREADED |
| Material Document and Classification | AISI 4340 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.750 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.312 INCHES CONCENTRIC HOLE IN |
| Width Between Flats | 1.000 INCHES NOMINAL IN |
| Internal Thread Class | 3B CONCENTRIC HOLE |
| Surface Treatment | PHOSPHATE ZINC OR PHOSPHATE MANGANESE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 10 |
| Material | STEEL COMP 4340 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 6658757-1 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5306-01-369-0769 is a Bolt,internally Relieved Body, manufactured by Naval Sea Systems Command, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-369-0769 has 1 manufacturer part number on file: 6658757-1 (Naval Sea Systems Command).
Key specifications for 6658757-1: Head Height: 0.375 INCHES MINIMUM AND 0.378 INCHES MAXIMUM IN; Fastener Length: 0.814 INCHES MINIMUM AND 0.820 INCHES MAXIMUM IN; Surface Treatment Document and Classification: TT-C-490 TY 1 ASSN STD 1ST TREATMENT RESPONSE OR DOD-P-132 TY M CL 1 FED SPEC 2ND TREATMENT RESPONSE OVERALL; Internal Thread Length: 1.192 INCHES NOMINAL CONCENTRIC HOLE IN. 22 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.