The Bolt,machine, cataloged under National Stock Number 5306-01-114-1258, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Oshkosh Defense Llc. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-114-1258 |
| Primary Part Number | 51098-A |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Oshkosh Defense Llc |
| Status | ACTIVE |
| Head Height | 0.361 INCHES MINIMUM AND 0.389 INCHES MAXIMUM IN |
| Fastener Length | 2.2440 INCHES MINIMUM AND 2.5000 INCHES MAXIMUM IN |
| Thread Length | 2.346 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Features Provided | CASEHARDENED AND FINISHED HEAD |
| Head Style | SQUARE |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.500 INCHES MAXIMUM IN |
| Thread Class | 2A 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 |
|---|---|
| 51098-A PRIMARY | Oshkosh Defense Llc (USA) |
| Reference | Meaning |
|---|---|
| 51098-A | 5/9 Secondary reference Oshkosh Corp |
NSN 5306-01-114-1258 is a Bolt,machine, manufactured by Oshkosh Defense Llc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-114-1258 has 1 manufacturer part number on file: 51098-A (Oshkosh Defense Llc).
Key specifications for 51098-A: Head Height: 0.361 INCHES MINIMUM AND 0.389 INCHES MAXIMUM IN; Fastener Length: 2.2440 INCHES MINIMUM AND 2.5000 INCHES MAXIMUM IN; Thread Length: 2.346 INCHES NOMINAL IN; Nominal Thread Diameter: 0.500 INCHES IN. 12 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.