The Washer,flat, cataloged under National Stock Number 5310-01-458-7738, 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. Government technical data includes 1 specification, 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. 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 | 5310-01-458-7738 |
| Primary Part Number | 12-34931 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Brunswick Corp Mariner Outboards Div |
| Status | ACTIVE |
| Material | STEEL CORROSION RESISTING OVERALL |
| 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 |
|---|---|
| 12-34931 PRIMARY | Brunswick Corp Mariner Outboards Div (USA) |
NSN 5310-01-458-7738 is a Washer,flat, manufactured by Brunswick Corp Mariner Outboards Div, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-458-7738 has 1 manufacturer part number on file: 12-34931 (Brunswick Corp Mariner Outboards Div).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-513-2764. Verify interchangeability with system specifications before substitution.
Key specifications for 12-34931: Special Features: PLATE STEEL .406 X .734 X .063 INCHES IN; End Item Identification: MARINER GASOLINE OUTBOARD MOTOR SET; Material: STEEL CORROSION RESISTING OVERALL. 1 specification is 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.