The Washer,flat, cataloged under National Stock Number 5310-01-502-5284, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Carver Pump Company. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | Carver Pump Company (CAGE 10941) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-502-5284 |
| Primary Part Number | 999-1107-A-03 ITEM 28 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Carver Pump Company |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 999-1107-A-03 ITEM 28 | Carver Pump Company (USA) |
| 999-1107-A-04 REV 4 ITEM 28 | Carver Pump Company (USA) |
| Reference | Meaning |
|---|---|
| 999-1107-A-04-2 8 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 999-1107-A-06-2 8 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 999-1107-A06 REV 4 ITEM 28 | 5/9 Secondary reference Carver Pump Company |
| 999-1107-A-03-2 8 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 999-1110-D-01-6 15 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 028-1610003C201 | 3/9 Design control — primary reference Carver Pump Company |
| 999-1110-D-01-2 8 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 028-1610003-201 | C/1 Advisory reference — outside the item-of-supply concept Carver Pump Company |
NSN 5310-01-502-5284 is a Washer,flat, manufactured by Carver Pump Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-502-5284 has 2 manufacturer part numbers on file: 999-1107-A-03 ITEM 28 (Carver Pump Company), 999-1107-A-04 REV 4 ITEM 28 (Carver Pump Company).
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.