The Bolt,machine, cataloged under National Stock Number 5306-01-250-2187, 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17 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-250-2187 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES OVERALL |
| Extended Washer Thickness | 0.045 INCHES NOMINAL IN |
| Head Height | 0.210 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN |
| Fastener Length | 1.312 INCHES NOMINAL IN |
| Extended Washer Diameter | 0.375 INCHES NOMINAL IN |
| Thread Length | 0.624 INCHES NOMINAL IN |
| Material Document and Classification | AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 96906-MS21279 GOVERNMENT STANDARD |
| Grip Length | 0.628 INCHES MINIMUM AND 0.688 INCHES MAXIMUM IN |
| Width Between Flats | 0.243 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL CORROSION RESISTING 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 | X |
| Reference | Meaning |
|---|---|
| MS21279-19 | 2/2 Government specification standardization U.S. Government activity |
NSN 5306-01-250-2187 is a Bolt,machine, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-250-2187: Surface Finish: 125.0 MICROINCHES OVERALL; Extended Washer Thickness: 0.045 INCHES NOMINAL IN; Head Height: 0.210 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN; Fastener Length: 1.312 INCHES NOMINAL IN. 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.