The Washer,flat, cataloged under National Stock Number 5310-01-458-7433, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Brunswick Corp Mariner Outboards Div. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-458-7433 |
| Primary Part Number | 12-82220M |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Brunswick Corp Mariner Outboards Div |
| 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 |
|---|---|
| 12-82220M PRIMARY | Brunswick Corp Mariner Outboards Div (USA) |
| 12-814576M | E. P. Barrus Limited Div Special Products (GBR) |
| Reference | Meaning |
|---|---|
| 12-814576M | 5/9 Secondary reference Brunswick Corp Mariner Outboards Div |
NSN 5310-01-458-7433 is a Washer,flat, manufactured by Brunswick Corp Mariner Outboards Div, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-458-7433 has 2 manufacturer part numbers on file: 12-82220M (Brunswick Corp Mariner Outboards Div), 12-814576M (E. P. Barrus Limited Div Special Products).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-539-8650. Verify interchangeability with system specifications before substitution.
Key specifications for 12-82220M: Special Features: 2 PER PACKAGE; End Item Identification: MARINER GASOLINE OUTBOARD MOTOR SET. 0 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.