The Bolt,machine, cataloged under National Stock Number 5306-01-137-7290, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-137-7290 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.109 INCHES MINIMUM AND 0.109 INCHES MINIMUM AND 0.141 INCHES MAXIMUM0.141 INCHES MAXIMUM IN |
| Fastener Length | 1.016 INCHES MINIMUM AND 1.016 INCHES MINIMUM AND 1.062 INCHES MAXIMUM1.062 INCHES MAXIMUM IN |
| Thread Length | 0.381 INCHES MINIMUM AND 0.381 INCHES MINIMUM AND 0.447 INCHES MAXIMUM0.447 INCHES MAXIMUM IN |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL32.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | MIL-S-18732 MIL SPEC SINGLE MATERIAL RESPONSE OVERALLMIL-S-18732 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES0.190 INCHES IN |
| Features Provided | FINISHED HEADFINISHED HEAD |
| Head Style | HEXAGONHEXAGON |
| Thread Direction | RIGHT-HANDRIGHT-HAND |
| Grip Length | 0.615 INCHES MINIMUM AND 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM0.635 INCHES MAXIMUM IN |
| Width Between Flats | 0.365 INCHES MINIMUM AND 0.365 INCHES MINIMUM AND 0.377 INCHES MAXIMUM0.377 INCHES MAXIMUM IN |
| Locking Feature | PATCH OR PATCH OR PELLET OR PELLET OR STRIP THREADSSTRIP THREADS |
| Surface Treatment | PASSIVATE OVERALLPASSIVATE OVERALL |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH125000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A3A |
| Thread Quantity Per Inch | 3232 |
| Material | STEEL COMP 431 OVERALL |
| Thread Series Designator | UNFUNF |
| 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 |
|---|---|
| MS21095-3010 | 2/2 Government specification standardization U.S. Government activity |
NSN 5306-01-137-7290 is a Bolt,machine, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-137-7290: Head Height: 0.109 INCHES MINIMUM AND 0.109 INCHES MINIMUM AND 0.141 INCHES MAXIMUM0.141 INCHES MAXIMUM IN; Fastener Length: 1.016 INCHES MINIMUM AND 1.016 INCHES MINIMUM AND 1.062 INCHES MAXIMUM1.062 INCHES MAXIMUM IN; Thread Length: 0.381 INCHES MINIMUM AND 0.381 INCHES MINIMUM AND 0.447 INCHES MAXIMUM0.447 INCHES MAXIMUM IN; Hardness Rating: 26.0 ROCKWELL C MINIMUM AND 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL32.0 ROCKWELL C MAXIMUM OVERALL. 18 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.