The Bolt,machine, cataloged under National Stock Number 5306-01-308-3624, 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17 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-308-3624 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Extended Washer Thickness | 0.333 INCHES MINIMUM AND 0.353 INCHES MAXIMUM IN |
| Head Height | 0.864 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN |
| Fastener Length | 3.235 INCHES MINIMUM AND 3.297 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 1.293 INCHES MINIMUM AND 1.312 INCHES MAXIMUM IN |
| Thread Length | 3.266 INCHES NOMINAL IN |
| Hardness Rating | 32.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | MIL-S-5626 COND C2 MIL SPEC SINGLE MATERIAL RESPONSE OR MIL-S-5000 COND C2 GAASTM A29 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.875 INCHES IN |
| Head Style | DOUBLE HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.868 INCHES MINIMUM AND 0.879 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 9 |
| Material | STEEL COMP 4140 OR STEEL COMP 316 OR STEEL COMP 4640 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 |
| Reference | Meaning |
|---|---|
| 624254-1440DN3 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-308-3624 is a Bolt,machine, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-308-3624: Extended Washer Thickness: 0.333 INCHES MINIMUM AND 0.353 INCHES MAXIMUM IN; Head Height: 0.864 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN; Fastener Length: 3.235 INCHES MINIMUM AND 3.297 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 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.