The Washer,flat, cataloged under National Stock Number 5310-01-565-7983, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Plasan North America, Inc.. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Washer,flat |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Oshkosh Defense Llc (CAGE 75Q65); Plasan North America, Inc. (CAGE 535V1) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-565-7983 |
| Primary Part Number | 5320000011-00 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Plasan North America, Inc. |
| 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 |
|---|---|
| 12KP181 | Oshkosh Defense Llc (USA) |
| 5320000011-00 PRIMARY | Plasan North America, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 4000156 | D/9 Drawing number reference only Oshkosh Defense Llc |
| 12KP181 | 5/9 Secondary reference Oshkosh Corp |
| 5320000011-00 | 5/9 Secondary reference Bae Systems Survivability Systems Llc |
NSN 5310-01-565-7983 is a Washer,flat, manufactured by Plasan North America, Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-565-7983 has 2 manufacturer part numbers on file: 12KP181 (Oshkosh Defense Llc), 5320000011-00 (Plasan North America, Inc.).
4 possible matches (shared part number, not a government interchangeability claim): 5310-01-575-0889, 5310-01-575-1324, 2990-01-578-1930. Verify interchangeability with system specifications before substitution.
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.