The Washer,flat, cataloged under National Stock Number 5310-01-548-9711, 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 5 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-548-9711 |
| Primary Part Number | 028-1410001-201 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Carver Pump Company |
| Status | ACTIVE |
| Criticality Code Justification | FEAT |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL CORROSION RESISTING OVERALL |
| Center Hole Shape Style | ROUND |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 999-1205-B-01 REV B - IT 28 | Carver Pump Company (USA) |
| 028-1410001-201 PRIMARY | Carver Pump Company (USA) |
| 999-1205-A-02 IT 28 | Carver Pump Company (USA) |
NSN 5310-01-548-9711 is a Washer,flat, manufactured by Carver Pump Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-548-9711 has 3 manufacturer part numbers on file: 999-1205-B-01 REV B - IT 28 (Carver Pump Company), 028-1410001-201 (Carver Pump Company), 999-1205-A-02 IT 28 (Carver Pump Company).
Key specifications for 028-1410001-201: Criticality Code Justification: FEAT; Cross-Sectional Shape Style: RECTANGULAR; Special Features: MILITARY CRITICAL, EXPORT CONTROL; 316 STAINLESS STEEL; Peripheral Shape Style: ROUND. 5 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.