The Nut,plain,castellated,hexagon, cataloged under National Stock Number 5310-01-596-4989, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Curtiss-Wright Electro-Mechanical Corporation Div Epd. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-596-4989 |
| Primary Part Number | 31A4X12(4204) |
| Item Name | Nut,plain,castellated,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| Status | ACTIVE |
| 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 |
|---|---|
| PL-16034N18 ITEM 255 | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| 31A4X12(4204) PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
NSN 5310-01-596-4989 is a Nut,plain,castellated,hexagon, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Epd, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-596-4989 has 2 manufacturer part numbers on file: PL-16034N18 ITEM 255 (Curtiss-Wright Electro-Mechanical Corporation Div Epd), 31A4X12(4204) (Curtiss-Wright Electro-Mechanical Corporation Div Epd).
Key specifications for 31A4X12(4204): Part Name Assigned by Controlling Agency: NUT,HEX, CASTLE; End Item Identification: AUX SEA WATER PUMP. 0 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.