The Bolt,machine, cataloged under National Stock Number 5306-01-006-3858, 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18 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5306-01-006-3858 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Extended Washer Thickness | 0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN |
| Head Height | 0.430 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN |
| Fastener Length | 1.234 INCHES MINIMUM AND 1.281 INCHES MAXIMUM IN |
| Extended Washer Diameter | 0.642 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN |
| Thread Length | 1.091 INCHES MINIMUM AND 1.281 INCHES MAXIMUM IN |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.438 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | DOUBLE HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.432 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Minimum Yield Strength | 130000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 14 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| MIL-S-24240/3 | 4/1 Identification reference U.S. Government activity |
| M24240/3-10710 | 2/2 Government specification standardization U.S. Government activity |
NSN 5306-01-006-3858 is a Bolt,machine, classified under FSC 5306, Bolts. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5306-01-158-3872. Verify interchangeability with system specifications before substitution.
Key specifications for 5306-01-006-3858: Extended Washer Thickness: 0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN; Head Height: 0.430 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN; Fastener Length: 1.234 INCHES MINIMUM AND 1.281 INCHES MAXIMUM IN; Extended Washer Diameter: 0.642 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN. 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.