The Bolt,machine, cataloged under National Stock Number 5306-01-237-6829, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Kohler Co Engine Plant Div. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-237-6829 |
| Primary Part Number | X-154-4 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Kohler Co Engine Plant Div |
| Status | ACTIVE |
| Head Height | 0.208 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN |
| Fastener Length | 1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN |
| Thread Length | 1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | DISHED HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Surface Treatment | PHOSPHATE ZINC OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 18 |
| 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 |
| Part Number | Manufacturer |
|---|---|
| X-154-4 PRIMARY | Kohler Co Engine Plant Div (USA) |
| Reference | Meaning |
|---|---|
| V-25 086 00 | D/9 Drawing number reference only Kohler Co Engine Plant Div |
NSN 5306-01-237-6829 is a Bolt,machine, manufactured by Kohler Co Engine Plant Div, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-237-6829 has 1 manufacturer part number on file: X-154-4 (Kohler Co Engine Plant Div).
2 possible matches (shared part number, not a government interchangeability claim): 5306-01-239-1056, 5306-01-242-5954. Verify interchangeability with system specifications before substitution.
Key specifications for X-154-4: Head Height: 0.208 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN; Fastener Length: 1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN; Thread Length: 1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.312 INCHES IN. 11 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.