The Nut,plain,wing, cataloged under National Stock Number 5310-01-694-8280, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Buckeye Fasteners, Inc.. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-694-8280 |
| Primary Part Number | BF 232521-N |
| Item Name | Nut,plain,wing |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Buckeye Fasteners, Inc. |
| Status | ACTIVE |
| Body Diameter | 0.335 INCHES NOMINAL IN |
| Washer Outside Diameter | 0.735 INCHES NOMINAL IN |
| Washer Thickness | 0.035 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Surface Treatment | NICKEL OVERALL |
| Nut Style | WING |
| Thread Quantity Per Inch | 20 |
| Material | ZINC ALLOY OVERALL |
| Wing Spread Width | 1.000 INCHES NOMINAL IN |
| 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 |
|---|---|
| BF 232521-N PRIMARY | Buckeye Fasteners, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 28-0304 | 5/9 Secondary reference Atrex Energy, Inc. |
NSN 5310-01-694-8280 is a Nut,plain,wing, manufactured by Buckeye Fasteners, Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-694-8280 has 1 manufacturer part number on file: BF 232521-N (Buckeye Fasteners, Inc.).
Key specifications for BF 232521-N: Body Diameter: 0.335 INCHES NOMINAL IN; Overall Height: 0.465 INCHES NOMINAL IN; Washer Outside Diameter: 0.735 INCHES NOMINAL IN; Washer Thickness: 0.035 INCHES NOMINAL IN. 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.