The Bolt,machine, cataloged under National Stock Number 5306-01-247-7599, 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18 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-247-7599 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Extended Washer Thickness | 0.036 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN |
| Head Height | 0.266 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN |
| Fastener Length | 3.041 INCHES MINIMUM AND 3.071 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 11,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.575 INCHES MINIMUM AND 0.585 INCHES MAXIMUM IN |
| Thread Length | 0.541 INCHES MINIMUM IN |
| Hardness Rating | 39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | MIL-S-5620 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5000 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-8503 MIL SPEC 4TH MATERIAL RESPONSE AND AISI ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Nominal Thread Diameter | 0.3125 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Grip Length | 2.490 INCHES MINIMUM AND 2.510 INCHES MAXIMUM IN |
| Width Between Flats | 0.360 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Minimum Tensile Strength | 11000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP 4140 OR STEEL COMP 4340 OR STEEL COMP 6150 OR STEEL COMP 8740 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 |
|---|---|
| MS21134-05040 | 3/2 Design control — primary reference U.S. Government activity |
| MS21134-05040 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-247-7599 is a Bolt,machine, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-247-7599: Extended Washer Thickness: 0.036 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN; Head Height: 0.266 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN; Fastener Length: 3.041 INCHES MINIMUM AND 3.071 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TYPE 11,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE 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.