The Bolt,machine, cataloged under National Stock Number 5306-01-429-3167, 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 9 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 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 | 5306-01-429-3167 |
| Primary Part Number | 8T4171 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Head Height | 4.0 MILLIMETERS NOMINAL MM |
| Fastener Length | 12.0 MILLIMETERS NOMINAL MM |
| Thread Pitch in Millimeters | 1.0 |
| Thread Length | 10.0 MILLIMETERS NOMINAL MM |
| Nominal Thread Diameter | 6.0 MILLIMETERS MM |
| Head Style | HEXAGON |
| Grip Length | 2.0 MILLIMETERS NOMINAL MM |
| Width Between Flats | 10.0 MILLIMETERS NOMINAL MM |
| 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 |
NSN 5306-01-429-3167 is a Bolt,machine, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-429-3167 has 4 manufacturer part numbers on file: A03345 (Unac), 8T4171 (Caterpillar Inc Div Caterpillar Defense), 8T-4171 (Finning (uk) Ltd), CV129470 (Tvs Supply Chain Solutions Limited).
1 possible match (shared part number, not a government interchangeability claim): 6260-01-524-9286. Verify interchangeability with system specifications before substitution.
Key specifications for 8T4171: Head Height: 4.0 MILLIMETERS NOMINAL MM; Fastener Length: 12.0 MILLIMETERS NOMINAL MM; Thread Pitch in Millimeters: 1.0; Thread Length: 10.0 MILLIMETERS NOMINAL MM. 9 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.