The Bolt,machine, cataloged under National Stock Number 5306-01-143-6504, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 24 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-143-6504 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES GRIP32.0 MICROINCHES GRIP |
| Surface Finish | 32.0 MICROINCHES BEARING SURFACE OF HEAD32.0 MICROINCHES BEARING SURFACE OF HEAD |
| Surface Finish | 32.0 MICROINCHES THREADS32.0 MICROINCHES THREADS |
| Head Height | 0.182 INCHES MINIMUM AND 0.182 INCHES MINIMUM AND 0.198 INCHES MAXIMUM0.198 INCHES MAXIMUM IN |
| Fastener Length | 2.740 INCHES MINIMUM AND 2.740 INCHES MINIMUM AND 2.760 INCHES MAXIMUM2.760 INCHES MAXIMUM IN |
| Thread Length | 0.865 INCHES MINIMUM AND 0.865 INCHES MINIMUM AND 0.945 INCHES MAXIMUM0.945 INCHES MAXIMUM IN |
| Hardness Rating | 24.0 ROCKWELL C MINIMUM AND 24.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM OVERALL35.0 ROCKWELL C MAXIMUM OVERALL |
| Hole Configuration Style | HEXAGON FLATSHEXAGON FLATS |
| Material Document and Classification | AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALLAMS5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.312 INCHES0.312 INCHES IN |
| Features Provided | FINISHED HEADFINISHED HEAD |
| Head Style | HEXAGONHEXAGON |
| Thread Direction | RIGHT-HANDRIGHT-HAND |
| Grip Length | 1.815 INCHES MINIMUM AND 1.815 INCHES MINIMUM AND 1.875 INCHES MAXIMUM1.875 INCHES MAXIMUM IN |
| Width Between Flats | 0.492 INCHES MINIMUM AND 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM0.502 INCHES MAXIMUM IN |
| Minimum Tensile Strength | 130000 POUNDS PER SQUARE INCH130000 POUNDS PER SQUARE INCH LBS |
| Minimum Yield Strength | 85000 POUNDS PER SQUARE INCH85000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A3A |
| Thread Quantity Per Inch | 2424 |
| Material | IRON ALLOY 660 OVERALL |
| Hole Quantity | 11 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF)UNIFIED NATIONAL JOINT FINE (UNJF) |
| Hole Type | DRILLEDDRILLED |
| Hole Diameter | 0.060 INCHES MINIMUM AND 0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM0.070 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 |
| Reference | Meaning |
|---|---|
| MS9502-32 | 2/2 Government specification standardization U.S. Government activity |
NSN 5306-01-143-6504 is a Bolt,machine, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-143-6504: Surface Finish: 32.0 MICROINCHES GRIP32.0 MICROINCHES GRIP; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD32.0 MICROINCHES BEARING SURFACE OF HEAD; Surface Finish: 32.0 MICROINCHES THREADS32.0 MICROINCHES THREADS; Head Height: 0.182 INCHES MINIMUM AND 0.182 INCHES MINIMUM AND 0.198 INCHES MAXIMUM0.198 INCHES MAXIMUM IN. 24 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.