The Washer,flat, cataloged under National Stock Number 5310-01-287-8109, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Bird Products Corp. Government technical data includes 8 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 | 5310-01-287-8109 |
| Primary Part Number | 1819 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Bird Products Corp |
| Status | ACTIVE |
| Overall Diameter | 0.620 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Purchase Description Identification | 56712-1819 |
| Peripheral Shape Style | ROUND |
| Material | COPPER ALLOY OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.500 INCHES NOMINAL IN |
| Thickness | 0.010 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 |
|---|---|
| 1819 PRIMARY | Bird Products Corp (USA) |
NSN 5310-01-287-8109 is a Washer,flat, manufactured by Bird Products Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-287-8109 has 1 manufacturer part number on file: 1819 (Bird Products Corp).
Key specifications for 1819: Overall Diameter: 0.620 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Purchase Description Identification: 56712-1819; Peripheral Shape Style: ROUND. 8 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.