The Bolt,machine, cataloged under National Stock Number 5306-01-154-4317, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Kovatch Corp.. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-154-4317 |
| Primary Part Number | K-500-CH-1741 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Kovatch Corp. |
| Status | ACTIVE |
| Head Height | 0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN |
| Fastener Length | 2.690 INCHES MINIMUM AND 2.790 INCHES MAXIMUM IN |
| Thread Length | 2.551 INCHES MINIMUM AND 2.790 INCHES MAXIMUM IN |
| 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 |
| 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 |
|---|---|
| 4AX255 | Volvo Group Government Sales Oceani Oceania Volvo Group Government Sales (AUS) |
| K-500-CH-1741 PRIMARY | Kovatch Corp. (USA) |
| Reference | Meaning |
|---|---|
| 4AX 255 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-154-4317 is a Bolt,machine, manufactured by Kovatch Corp., classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-154-4317 has 2 manufacturer part numbers on file: 4AX255 (Volvo Group Government Sales Oceani Oceania Volvo Group Government Sales), K-500-CH-1741 (Kovatch Corp.).
Key specifications for K-500-CH-1741: Head Height: 0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN; Fastener Length: 2.690 INCHES MINIMUM AND 2.790 INCHES MAXIMUM IN; Thread Length: 2.551 INCHES MINIMUM AND 2.790 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.