The Washer,flat, cataloged under National Stock Number 5310-01-435-7791, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Bae Systems Survivability Systems Llc. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Washer,flat |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Oshkosh Defense Llc (CAGE 75Q65); Amz Alabama Inc. (CAGE 076M6); Bae Systems Survivability Systems Llc (CAGE 6W728) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-435-7791 |
| Primary Part Number | 4397005-075 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Bae Systems Survivability Systems Llc |
| 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 |
|---|---|
| 3871961 | Oshkosh Defense Llc (USA) |
| 4397005-075 | Amz Alabama Inc. (USA) |
| 4397005-075 PRIMARY | Bae Systems Survivability Systems Llc (USA) |
| Reference | Meaning |
|---|---|
| 4397005-075 | C/1 Advisory reference — outside the item-of-supply concept Bae Systems Land & Armaments L.p. |
| 3871961 | 7/9 Vendor item drawing reference Oshkosh Corp |
NSN 5310-01-435-7791 is a Washer,flat, manufactured by Bae Systems Survivability Systems Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-435-7791 has 3 manufacturer part numbers on file: 3871961 (Oshkosh Defense Llc), 4397005-075 (Amz Alabama Inc.), 4397005-075 (Bae Systems Survivability Systems Llc).
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.