The Bolt,machine, cataloged under National Stock Number 5306-01-131-5026, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-131-5026 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN |
| Fastener Length | 1.250 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-A-8625 TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.860 INCHES NOMINAL IN |
| Shank Unthreaded Hole Diameter | 0.062 INCHES MINIMUM AND 0.067 INCHES MAXIMUM FIRST HOLE IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN |
| Surface Treatment | ANODIZE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | ALUMINUM ALLOY OVERALL |
| Thread Series Designator | UNF |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 0.900 INCHES NOMINAL 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 |
|---|---|
| 734112 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-131-5026 is a Bolt,machine, classified under FSC 5306, Bolts. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5840-01-438-9407. Verify interchangeability with system specifications before substitution.
Key specifications for 5306-01-131-5026: Head Height: 0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN; Fastener Length: 1.250 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-A-8625 TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.860 INCHES NOMINAL IN. 15 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.