The Washer,flat, cataloged under National Stock Number 5310-01-546-5285, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Fasteners Inc.. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-546-5285 |
| Primary Part Number | 51947 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Fasteners Inc. |
| Status | ACTIVE |
| Overall Diameter | 0.740 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.340 INCHES NOMINAL IN |
| Thickness | 0.062 INCHES NOMINAL IN |
| 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 |
|---|---|
| 51947 PRIMARY | Fasteners Inc. (USA) |
| 1190.340.74.062.120 PRIMARY | Fasteners Inc. (USA) |
| Reference | Meaning |
|---|---|
| 5/16 PLASTIC FLAT WASHER | 5/9 Secondary reference Fasteners Inc. |
NSN 5310-01-546-5285 is a Washer,flat, manufactured by Fasteners Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-546-5285 has 2 manufacturer part numbers on file: 51947 (Fasteners Inc.), 1190.340.74.062.120 (Fasteners Inc.).
Key specifications for 51947: Overall Diameter: 0.740 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Special Features: MATERIAL IS NYLON; Peripheral Shape Style: ROUND. 6 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.