The Bolt,machine, cataloged under National Stock Number 5306-00-557-7140, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 19 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-00-557-7140 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 1.500 INCHES NOMINAL IN |
| Fastener Length | 9.310 INCHES MINIMUM AND 9.500 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 7.000 INCHES NOMINAL IN |
| Hardness Rating | 33.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| Shank Unthreaded Hole Diameter | 0.250 INCHES MINIMUM AND 0.256 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | ASTMA322 ASSN STD ALL MATERIAL RESPONSES OR ASTMA331 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Nominal Thread Diameter | 1.500 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 2.310 INCHES MINIMUM AND 2.500 INCHES MAXIMUM IN |
| Width Between Flats | 2.620 INCHES MINIMUM AND 2.740 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 6 |
| Material | STEEL COMP 4140 OR STEEL COMP 4142 OR STEEL COMP 8640 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 4.370 INCHES MINIMUM AND 5.750 INCHES MAXIMUM FIRST HOLE 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 |
|---|---|
| 13219E4191 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-00-557-7140 is a Bolt,machine, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-00-557-7140: Head Height: 1.500 INCHES NOMINAL IN; Fastener Length: 9.310 INCHES MINIMUM AND 9.500 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 7.000 INCHES NOMINAL IN. 19 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.