The Nut,plain,extended Washer,hexago, cataloged under National Stock Number 5310-01-615-0126, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 10 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-615-0126 |
| Primary Part Number | 243-5110149 ITEM 9 |
| Item Name | Nut,plain,extended Washer,hexago |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Washer Outside Diameter | 5.000 INCHES NOMINAL IN |
| Width Across Flats | 3.875 INCHES NOMINAL IN |
| Thread Series | UNF |
| Washer Thickness | 0.3125 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 2.500 INCHES IN |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 12 |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| 243-5110149 ITEM 9 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5310-01-615-0126 is a Nut,plain,extended Washer,hexago, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-615-0126 has 1 manufacturer part number on file: 243-5110149 ITEM 9 (Naval Sea Systems Command).
Key specifications for 243-5110149 ITEM 9: Overall Height: 1.375 INCHES NOMINAL IN; Washer Outside Diameter: 5.000 INCHES NOMINAL IN; Width Across Flats: 3.875 INCHES NOMINAL IN; Thread Series: UNF. 10 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.