The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-658-1437, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Eastern Co Div Eberhard Manufacturing. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-658-1437 |
| Primary Part Number | 16878-6-DT |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Eastern Co Div Eberhard Manufacturing |
| Status | ACTIVE |
| Width Across Flats | 1.750 INCHES NOMINAL IN |
| Thread Series | UNF |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.250 INCHES IN |
| Nut Height | 0.438 INCHES NOMINAL IN |
| Nut Style | HEXAGON |
| Thread Quantity Per Inch | 12 |
| Material | STEEL NUT |
| 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 |
|---|---|
| 16878-6-DT PRIMARY | Eastern Co Div Eberhard Manufacturing (USA) |
| Reference | Meaning |
|---|---|
| 4249229 | 7/2 Vendor item drawing reference Oshkosh Defense Llc |
NSN 5310-01-658-1437 is a Nut,plain,hexagon, manufactured by Eastern Co Div Eberhard Manufacturing, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-658-1437 has 1 manufacturer part number on file: 16878-6-DT (Eastern Co Div Eberhard Manufacturing).
Key specifications for 16878-6-DT: Width Across Flats: 1.750 INCHES NOMINAL IN; Thread Series: UNF; Thread Direction: RIGHT-HAND; Nominal Thread Size: 1.250 INCHES IN. 8 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.