The Bolt,shoulder, cataloged under National Stock Number 5306-01-476-5489, 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 17 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 | 5306-01-476-5489 |
| Primary Part Number | 6650408 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Fastener Length | 1.500 INCHES MAXIMUM IN |
| Shoulder Length | 1.029 INCHES MINIMUM AND 1.033 INCHES MAXIMUM SECOND SHOULDER IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC 1ST TREATMENT RESPONSE OVERALL |
| Thread Length | 0.312 INCHES MAXIMUM IN |
| Shoulder Shape | RIBBED ALL SHOULDERS |
| Material Document and Classification | MS35308-368 MIL STD 1ST MATERIAL RESPONSE OR 304 MFR REF 2ND MATERIAL RESPONSE OR 316 MFR REF 3RD MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Shoulder Width Across Flats | 0.271 INCHES MAXIMUM FIRST SHOULDER IN |
| Shoulder Width Across Flats | 0.375 INCHES MAXIMUM SECOND SHOULDER IN |
| Color | BLACK OVERALL |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL CORROSION RESISTING 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 |
|---|---|
| 6650408 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5306-01-476-5489 is a Bolt,shoulder, manufactured by Naval Sea Systems Command, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-476-5489 has 1 manufacturer part number on file: 6650408 (Naval Sea Systems Command).
Key specifications for 6650408: Fastener Length: 1.500 INCHES MAXIMUM IN; Shoulder Length: 1.029 INCHES MINIMUM AND 1.033 INCHES MAXIMUM SECOND SHOULDER IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC 1ST TREATMENT RESPONSE OVERALL; Thread Length: 0.312 INCHES MAXIMUM IN. 17 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.