The Washer,flat, cataloged under National Stock Number 5310-01-503-9896, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Carver Pump Company. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-503-9896 |
| Primary Part Number | 999-4213-E-11-28 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Carver Pump Company |
| Status | ACTIVE |
| Material Document and Classification | AISI, TYPE 304 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Material | STEEL COMP 304 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 |
|---|---|
| 999-4213-E-11-28 PRIMARY | Carver Pump Company (USA) |
| 999-4213-E-11 ITEM 28 PRIMARY | Carver Pump Company (USA) |
NSN 5310-01-503-9896 is a Washer,flat, manufactured by Carver Pump Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-503-9896 has 2 manufacturer part numbers on file: 999-4213-E-11-28 (Carver Pump Company), 999-4213-E-11 ITEM 28 (Carver Pump Company).
Key specifications for 999-4213-E-11-28: Material Document and Classification: AISI, TYPE 304 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; End Item Identification: PUMP CENTRIF-CLOSE-COUPLED-VERTICAL; Material: STEEL COMP 304 OVERALL. 2 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.