The Bolt,machine, cataloged under National Stock Number 5306-01-287-1577, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 26 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-287-1577 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Surface Finish | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| Extended Washer Thickness | 0.068 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN |
| Head Height | 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN |
| Fastener Length | 3.407 INCHES MINIMUM AND 3.437 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-C-8837 TY2 CL2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 1.153 INCHES MINIMUM AND 1.163 INCHES MAXIMUM IN |
| Thread Length | 1.085 INCHES MINIMUM AND 1.135 INCHES MAXIMUM IN |
| Hardness Rating | 51.0 ROCKWELL C MINIMUM AND 54.0 ROCKWELL C MAXIMUM OVERALL |
| Hole Configuration Style | DOUBLE HEXAGON LONGITUDINAL HOLE |
| Material Document and Classification | AMS6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | SPLINE EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Grip Length | 2.302 INCHES MINIMUM AND 2.322 INCHES MAXIMUM IN |
| Head Minor Diameter | 0.673 INCHES MINIMUM AND 0.688 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Minimum Tensile Strength | 260000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| Material | STEEL COMP H11 OVERALL |
| Hole Quantity | 4 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Hole Type | DRILLED |
| Hole Diameter | 0.050 INCHES MINIMUM AND 0.060 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 |
|---|---|
| NAS21296H10037 | 3/2 Design control — primary reference U.S. Government activity |
| MS21296H10037 | 5/9 Secondary reference U.S. Government activity |
| MS21296H10037 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-287-1577 is a Bolt,machine, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-287-1577: Surface Finish: 32.0 MICROINCHES GRIP; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; Extended Washer Thickness: 0.068 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN; Head Height: 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN. 26 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.