The Nut,plain,plate, cataloged under National Stock Number 5310-01-656-7321, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Fastener Specialty, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-656-7321 |
| Primary Part Number | FSU-1401PD |
| Item Name | Nut,plain,plate |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Fastener Specialty, Inc. |
| Status | ACTIVE |
| Nut Length | 1.177 INCHES MINIMUM AND 1.207 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE NUT |
| Thread Series | UNJC |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 4.400 INCHES IN |
| Nut Height | 0.106 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE AND OXIDE FILM NUT |
| Nut Style | PLATE |
| Thread Class | 3B |
| Material | STEEL CORROSION RESISTING 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 |
|---|---|
| FSU-1401PD PRIMARY | Fastener Specialty, Inc. (USA) |
NSN 5310-01-656-7321 is a Nut,plain,plate, manufactured by Fastener Specialty, Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-656-7321 has 1 manufacturer part number on file: FSU-1401PD (Fastener Specialty, Inc.).
Key specifications for FSU-1401PD: Nut Length: 1.177 INCHES MINIMUM AND 1.207 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE NUT; Thread Series: UNJC; Thread Direction: RIGHT-HAND. 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.