The Washer,flat, cataloged under National Stock Number 5310-00-262-4709, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is United Technologies Corp Electro Systems Inc. Government technical data includes 9 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-262-4709 |
| Primary Part Number | WA72613 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | United Technologies Corp Electro Systems Inc |
| Status | ACTIVE |
| Overall Diameter | 0.312 INCHES NOMINAL IN |
| Material Document and Classification | QQ-S-633,FS 1010-CANCELLED FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | CADMIUM OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.156 INCHES NOMINAL IN |
| Thickness | 0.025 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 |
|---|---|
| WA72613 PRIMARY | United Technologies Corp Electro Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| WA72613 | 5/9 Secondary reference Ambac International Corporation Div Ambac International |
| A196198 | 5/9 Secondary reference CAGE 00000 |
NSN 5310-00-262-4709 is a Washer,flat, manufactured by United Technologies Corp Electro Systems Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-262-4709 has 1 manufacturer part number on file: WA72613 (United Technologies Corp Electro Systems Inc).
Key specifications for WA72613: Overall Diameter: 0.312 INCHES NOMINAL IN; Material Document and Classification: QQ-S-633,FS 1010-CANCELLED FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Surface Treatment: CADMIUM OVERALL. 9 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.