The Nut,plain,extended Washer,hexago, cataloged under National Stock Number 5310-01-447-6997, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-447-6997 |
| Primary Part Number | CTS210A-2 |
| Item Name | Nut,plain,extended Washer,hexago |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Washer Outside Diameter | 0.625 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-C-13924A MIL SPEC SINGLE TREATMENT RESPONSE OVERALL A |
| Thread Series | UN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.312 INCHES IN |
| Surface Treatment | OXIDE OVERALL |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 18 |
| Material | STEEL 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 |
|---|---|
| CTS210A-2 PRIMARY | The Boeing Company Div Defense (USA) |
| RE168350004-40C PRIMARY | The Boeing Company Div Defense (USA) |
NSN 5310-01-447-6997 is a Nut,plain,extended Washer,hexago, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-447-6997 has 2 manufacturer part numbers on file: CTS210A-2 (The Boeing Company Div Defense), RE168350004-40C (The Boeing Company Div Defense).
Key specifications for CTS210A-2: Overall Height: 0.500 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN; Washer Outside Diameter: 0.625 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-C-13924A MIL SPEC SINGLE TREATMENT RESPONSE OVERALL A; Thread Series: UN. 10 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.