The Washer,flat, cataloged under National Stock Number 5310-01-458-8038, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-458-8038 |
| Primary Part Number | 12-28421 |
| 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 |
|---|---|
| 12-28421 PRIMARY | Brunswick Corp Mariner Outboards Div (USA) |
| Reference | Meaning |
|---|---|
| 12-28421 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5310-01-458-8038 is a Washer,flat, manufactured by Brunswick Corp Mariner Outboards Div, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-458-8038 has 1 manufacturer part number on file: 12-28421 (Brunswick Corp Mariner Outboards Div).
Key specifications for 12-28421: Special Features: 5 WASHERS PER PACKAGE; 1-1/2 X 33/64 X 1/8 INCH PLATE STAINLESS STEEL 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.