The Washer,flat, cataloged under National Stock Number 5310-00-452-4780, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 7 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 | 5310-00-452-4780 |
| Primary Part Number | STD2186-3 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Overall Diameter | 0.865 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | ALUMINUM ALLOY OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.503 INCHES NOMINAL IN |
| Thickness | 0.1215 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 |
|---|---|
| STD2186-3 PRIMARY | Naval Inventory Control Point Mechanicsburg (USA) |
NSN 5310-00-452-4780 is a Washer,flat, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-452-4780 has 1 manufacturer part number on file: STD2186-3 (Naval Inventory Control Point Mechanicsburg).
Key specifications for STD2186-3: Overall Diameter: 0.865 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Special Features: 2 PROJECTIONS EQUALLY SPACED ON WASHER FACE,0.125 IN. WIDE BY 0.086 IN. HIGH;2 HOLES 0.043 IN. DIA,THRU WASHER PERIPHERY AND PARALLEL TO PROJECTIONS IN; Peripheral Shape Style: ROUND. 7 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.