The Bolt,machine, cataloged under National Stock Number 5306-00-253-7627, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 15 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-253-7627 |
| Primary Part Number | 4K5175 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Extended Washer Thickness | 0.187 INCHES NOMINAL IN |
| Head Height | 0.490 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Fastener Length | 1.484 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN |
| Extended Washer Diameter | 0.738 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Thread Length | 1.234 INCHES MINIMUM AND 1.281 INCHES MAXIMUM IN |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | DOUBLE HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.492 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 13 |
| 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 |
|---|---|
| 4K5175 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
NSN 5306-00-253-7627 is a Bolt,machine, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-253-7627 has 1 manufacturer part number on file: 4K5175 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 4K5175: Extended Washer Thickness: 0.187 INCHES NOMINAL IN; Head Height: 0.490 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN; Fastener Length: 1.484 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN; Extended Washer Diameter: 0.738 INCHES MINIMUM AND 0.750 INCHES MAXIMUM 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.