The Bolt,machine, cataloged under National Stock Number 5306-00-050-8031, 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 17 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-050-8031 |
| Primary Part Number | 5686553 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | General Motors Corp |
| Status | ACTIVE |
| Extended Washer Thickness | 0.095 INCHES MINIMUM IN |
| Head Height | 0.375 INCHES MAXIMUM IN |
| Fastener Length | 1.220 INCHES MINIMUM AND 1.280 INCHES MAXIMUM IN |
| Extended Washer Diameter | 0.550 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN |
| Thread Length | 1.062 INCHES NOMINAL IN |
| Hardness Rating | 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | SAE GRADE 8 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | DOUBLE HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.368 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OR ZINC OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| 5686553 | General Motors Corp (USA) |
| Reference | Meaning |
|---|---|
| 5686553 | C/1 Advisory reference — outside the item-of-supply concept Linear Motion Llc Div Ugm |
| 65MDJ1 | 5/9 Secondary reference Linde Lift Truck Corp. |
| 5686553 | 5/9 Secondary reference General Motors Corp Saginaw Div |
| 72G620R | 3/9 Design control — primary reference Clark Equipment Co |
| 65MDJ1 | C/1 Advisory reference — outside the item-of-supply concept Linde Material Handling North America Corporation |
| 72G620R | C/1 Advisory reference — outside the item-of-supply concept Dana Off Highway Products, Llc |
NSN 5306-00-050-8031 is a Bolt,machine, manufactured by General Motors Corp, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-050-8031 has 1 manufacturer part number on file: 5686553 (General Motors Corp).
Key specifications for 5686553: Extended Washer Thickness: 0.095 INCHES MINIMUM IN; Head Height: 0.375 INCHES MAXIMUM IN; Fastener Length: 1.220 INCHES MINIMUM AND 1.280 INCHES MAXIMUM IN; Extended Washer Diameter: 0.550 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN. 17 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.