The Bolt,machine, cataloged under National Stock Number 5306-01-021-2684, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-021-2684 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Extended Washer Thickness | 0.082 INCHES NOMINAL IN |
| Head Height | 0.310 INCHES NOMINAL IN |
| Fastener Length | 3.000 INCHES NOMINAL IN |
| Extended Washer Diameter | 0.460 INCHES NOMINAL IN |
| Thread Length | 0.660 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | DOUBLE HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Grip Length | 2.340 INCHES NOMINAL IN |
| Width Between Flats | 0.310 INCHES NOMINAL IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.310 INCHES NOMINAL IN |
| 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 |
|---|---|
| 5389-14 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-021-2684 is a Bolt,machine, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-021-2684: Extended Washer Thickness: 0.082 INCHES NOMINAL IN; Head Height: 0.310 INCHES NOMINAL IN; Fastener Length: 3.000 INCHES NOMINAL IN; Extended Washer Diameter: 0.460 INCHES NOMINAL IN. 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.