The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-523-8322, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-523-8322 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Fastener Length | 2.863 INCHES NOMINAL IN |
| Thread Length | 0.425 INCHES NOMINAL IN |
| Criticality Code Justification | AGAV |
| Material Document and Classification | QQ-C-320 FED SPEC 1ST MATERIAL RESPONSE FASTENER |
| Material Document and Classification | QQ-F-416 FED SPEC 1ST MATERIAL RESPONSE THREADS |
| Material Document and Classification | QQ-P-416 FED SPEC 1ST MATERIAL RESPONSE SIDES OF HEAD |
| Material Document and Classification | QQ-P-416 FED SPEC 2ND MATERIAL RESPONSE BEARING SURFACE OF HEAD |
| Head Style | DISHED HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 2.428 INCHES MINIMUM AND 2.448 INCHES MAXIMUM IN |
| Grip Diameter | 0.241 INCHES MINIMUM AND 0.244 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM THREADS |
| Surface Treatment | CADMIUM TOP OF HEAD |
| Surface Treatment | CADMIUM BEARING SURFACE OF HEAD |
| Surface Treatment | CHROMIUM FASTENER |
| Material | IRON ALLOY 660 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Reference | Meaning |
|---|---|
| NAS6704-39 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-523-8322 is a Bolt,close Tolerance, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-523-8322: Fastener Length: 2.863 INCHES NOMINAL IN; Thread Length: 0.425 INCHES NOMINAL IN; Criticality Code Justification: AGAV; Material Document and Classification: QQ-C-320 FED SPEC 1ST MATERIAL RESPONSE FASTENER. 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.