The Washer,flat, cataloged under National Stock Number 5310-01-678-3341, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Richco Inc. Div Harvard Molding Operations. Government technical data includes 4 specifications, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-678-3341 |
| Primary Part Number | R913-1 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Richco Inc. Div Harvard Molding Operations |
| Status | ACTIVE |
| Length | 0.0625 INCHES NOMINAL IN |
| Color | WHITE BODY |
| Peripheral Shape Style | RECTANGULAR |
| 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 | X |
| Part Number | Manufacturer |
|---|---|
| R913-1 PRIMARY | Richco Inc. Div Harvard Molding Operations (USA) |
NSN 5310-01-678-3341 is a Washer,flat, manufactured by Richco Inc. Div Harvard Molding Operations, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-678-3341 has 1 manufacturer part number on file: R913-1 (Richco Inc. Div Harvard Molding Operations).
Key specifications for R913-1: Length: 0.0625 INCHES NOMINAL IN; Color: WHITE BODY; Peripheral Shape Style: RECTANGULAR; Part Name Assigned by Controlling Agency: NYLON SPACERS. 4 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.