The Bolt,machine, cataloged under National Stock Number 5306-00-285-8055, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is General Electric Company. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-285-8055 |
| Primary Part Number | 133B973 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | General Electric Company |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES OVERALL |
| Head Height | 0.140 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN |
| Fastener Length | 1.220 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN |
| Distance From Centerline to Flat | 0.125 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN |
| Thread Length | 0.625 INCHES MINIMUM IN |
| Material Document and Classification | B50R313E,FSCM 07482 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | DEE CHAMFER |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.595 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5306-00-285-8055 is a Bolt,machine, manufactured by General Electric Company, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-285-8055 has 2 manufacturer part numbers on file: 133B973 (General Electric Company), 133B973 (General Electric Company).
Key specifications for 133B973: Surface Finish: 125.0 MICROINCHES OVERALL; Head Height: 0.140 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN; Fastener Length: 1.220 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN; Distance From Centerline to Flat: 0.125 INCHES MINIMUM AND 0.135 INCHES MAXIMUM 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.