The Bolt,machine, cataloged under National Stock Number 5306-01-415-9128, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-415-9128 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Extended Washer Thickness | 0.074 INCHES MINIMUM IN |
| Head Height | 0.312 INCHES NOMINAL IN |
| Fastener Length | 3.250 INCHES NOMINAL IN |
| Extended Washer Diameter | 0.457 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN |
| Thread Length | 1.125 INCHES NOMINAL IN |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | SAE J429, GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | DOUBLE HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.306 INCHES MINIMUM AND 0.315 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| Material | STEEL 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 |
|---|---|
| 93G552 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-415-9128 is a Bolt,machine, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-415-9128: Extended Washer Thickness: 0.074 INCHES MINIMUM IN; Head Height: 0.312 INCHES NOMINAL IN; Fastener Length: 3.250 INCHES NOMINAL IN; Extended Washer Diameter: 0.457 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN. 15 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.