The Nut,plain,extended Washer,hexago, cataloged under National Stock Number 5310-01-157-7405, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Trico Products Corporation. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-157-7405 |
| Primary Part Number | 91221-1K |
| Item Name | Nut,plain,extended Washer,hexago |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Trico Products Corporation |
| Status | ACTIVE |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | PHOSPHATE OVERALL |
| Nut Style | HEXAGON |
| Thread Class | 2B |
| 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 |
|---|---|
| 91221-1K PRIMARY | Trico Products Corporation (USA) |
| 5731530 | Am General Llc (USA) |
| 91221-1K | Trico Products Pty Ltd (AUS) |
| 7623-912211K | Volvo Group Government Sales Oceani Oceania Volvo Group Government Sales (AUS) |
NSN 5310-01-157-7405 is a Nut,plain,extended Washer,hexago, manufactured by Trico Products Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-157-7405 has 4 manufacturer part numbers on file: 91221-1K (Trico Products Corporation), 5731530 (Am General Llc), 91221-1K (Trico Products Pty Ltd), 7623-912211K (Volvo Group Government Sales Oceani Oceania Volvo Group Government Sales).
Key specifications for 91221-1K: Thread Direction: RIGHT-HAND; Surface Treatment: PHOSPHATE OVERALL; Nut Style: HEXAGON; Thread Class: 2B. 4 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.