The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-671-2157, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Oshkosh Defense Llc. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-671-2157 |
| Primary Part Number | 4346838 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Oshkosh Defense Llc |
| Status | ACTIVE |
| Width Across Flats | 29.77 MILLIMETERS MINIMUM AND 32.00 MILLIMETERS MAXIMUM MM |
| Thread Series | M |
| Thread Pitch in Millimeters | 1.0 |
| Hole Configuration Style | CONFIGURATION B |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 25.0 MILLIMETERS MM |
| Nut Height | 3.17 MILLIMETERS MINIMUM AND 3.62 MILLIMETERS MAXIMUM MM |
| Drilled Hole Diameter | 1.5 MILLIMETERS NOMINAL MM |
| Nut Style | HEXAGON |
| Thread Class | 6H |
| Material | ALUMINUM ALLOY OVERALL |
| Bearing Surface Type | CHAMFERED OR FLAT OR WASHER FACED OR UNFINISHED |
| Hole Type and Quantity | 3 DRILLED |
| 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 |
|---|---|
| 4346838 PRIMARY | Oshkosh Defense Llc (USA) |
| Reference | Meaning |
|---|---|
| 4346838 | D/9 Drawing number reference only U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 5310-01-671-2157 is a Nut,plain,hexagon, manufactured by Oshkosh Defense Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-671-2157 has 1 manufacturer part number on file: 4346838 (Oshkosh Defense Llc).
Key specifications for 4346838: Width Across Flats: 29.77 MILLIMETERS MINIMUM AND 32.00 MILLIMETERS MAXIMUM MM; Thread Series: M; Thread Pitch in Millimeters: 1.0; Hole Configuration Style: CONFIGURATION B. 13 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.