The Bolt,machine, cataloged under National Stock Number 5306-01-288-9137, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is General Motors Corp. Government technical data includes 18 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5306-01-288-9137 |
| Primary Part Number | 9423181 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | General Motors Corp |
| Status | ACTIVE |
| Head Height | 0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN |
| Fastener Length | 0.408 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | GM 4435-M CODE A CAGE 24617 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.325 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN |
| Hardness Rating | 25.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | SAE J429 GR5 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Surface Treatment | PHOSPHATE OVERALL |
| Minimum Tensile Strength | 120000 POUNDS PER SQUARE INCH LBS |
| Minimum Yield Strength | 92000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 24 |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 9423181 PRIMARY | General Motors Corp (USA) |
| Reference | Meaning |
|---|---|
| B-1.127 | D/9 Drawing number reference only General Motors Corp |
NSN 5306-01-288-9137 is a Bolt,machine, manufactured by General Motors Corp, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-288-9137 has 1 manufacturer part number on file: 9423181 (General Motors Corp).
1 possible match (shared part number, not a government interchangeability claim): 6030-01-557-7214. Verify interchangeability with system specifications before substitution.
Key specifications for 9423181: Head Height: 0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN; Fastener Length: 0.408 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN; Surface Treatment Document and Classification: GM 4435-M CODE A CAGE 24617 MFR REF SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.325 INCHES MINIMUM AND 0.438 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.