The Nut,plain,extended Washer,hexago, cataloged under National Stock Number 5310-00-692-0784, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is De Havilland Aircraft of Canada Limited. Government technical data includes 13 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-692-0784 |
| Primary Part Number | C2U299 |
| Item Name | Nut,plain,extended Washer,hexago |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | De Havilland Aircraft of Canada Limited |
| Status | ACTIVE |
| Washer Outside Diameter | 2.680 INCHES NOMINAL IN |
| Width Across Flats | 1.062 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNF |
| Washer Thickness | 0.120 INCHES NOMINAL IN |
| Material Document and Classification | QQ-A-268,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.625 INCHES IN |
| Surface Treatment | ANODIZE OVERALL |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 18 |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| 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 |
|---|---|
| C2U299 PRIMARY | De Havilland Aircraft of Canada Limited (CAN) |
| Reference | Meaning |
|---|---|
| MPN500739 | 5/9 Secondary reference G and R Metal Finishing Co Inc |
| 1560L20-191-1 | 5/2 Secondary reference U.S. Government activity |
| C4870 | 5/9 Secondary reference Mcclain Tool Co |
| T692-0784 | 5/9 Secondary reference Tossco Inc |
NSN 5310-00-692-0784 is a Nut,plain,extended Washer,hexago, manufactured by De Havilland Aircraft of Canada Limited, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-692-0784 has 1 manufacturer part number on file: C2U299 (De Havilland Aircraft of Canada Limited).
Key specifications for C2U299: Overall Height: 0.900 INCHES NOMINAL IN; Washer Outside Diameter: 2.680 INCHES NOMINAL IN; Width Across Flats: 1.062 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL. 13 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.