The Bolt,machine, cataloged under National Stock Number 5306-00-281-1015, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Bae Systems Land & Armaments L.p.. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-281-1015 |
| Primary Part Number | 4056E |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Bae Systems Land & Armaments L.p. |
| Status | ACTIVE |
| Head Height | 0.219 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Fastener Length | 1.234 INCHES MINIMUM AND 1.266 INCHES MAXIMUM IN |
| Thread Length | 0.875 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN |
| Hardness Rating | 35.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| Hole Configuration Style | HEXAGON FLATS |
| Material Document and Classification | QQ-S-624 4140 FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-624 COMP 4145 FED SPEC 2ND MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.547 INCHES MINIMUM AND 0.578 INCHES MAXIMUM IN |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP 4140 OR STEEL COMP 4145 OVERALL |
| Hole Quantity | 3 |
| Thread Series Designator | UNF |
| Hole Type | DRILLED |
| Hole Diameter | 0.062 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5306-00-281-1015 is a Bolt,machine, manufactured by Bae Systems Land & Armaments L.p., classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-281-1015 has 2 manufacturer part numbers on file: 4056E (Bae Systems Land & Armaments L.p.), 8392662 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 4056E: Head Height: 0.219 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN; Fastener Length: 1.234 INCHES MINIMUM AND 1.266 INCHES MAXIMUM IN; Thread Length: 0.875 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN; Hardness Rating: 35.0 ROCKWELL C MINIMUM AND 38.0 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.