The Nut,plain,slotted,hexagon, cataloged under National Stock Number 5310-00-208-2157, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Curtiss-Wright Controls, Inc. Div Actuation Division. Government technical data includes 12 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 | 5310-00-208-2157 |
| Primary Part Number | A66974 |
| Item Name | Nut,plain,slotted,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Curtiss-Wright Controls, Inc. Div Actuation Division |
| Status | ACTIVE |
| Width Across Flats | 0.750 INCHES NOMINAL IN |
| Thread Series | UNEF |
| Material Document and Classification | QQ-B-750 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.438 INCHES IN |
| Nut Height | 0.609 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OVERALL |
| Nut Style | SLOTTED, HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 28 |
| Material | COPPER ALLOY 510 OR COPPER ALLOY 524 OR COPPER ALLOY 544 OVERALL |
| Bearing Surface Type | WASHER FACED |
| 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 |
|---|---|
| A66974 PRIMARY | Curtiss-Wright Controls, Inc. Div Actuation Division (USA) |
NSN 5310-00-208-2157 is a Nut,plain,slotted,hexagon, manufactured by Curtiss-Wright Controls, Inc. Div Actuation Division, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-208-2157 has 1 manufacturer part number on file: A66974 (Curtiss-Wright Controls, Inc. Div Actuation Division).
Key specifications for A66974: Width Across Flats: 0.750 INCHES NOMINAL IN; Thread Series: UNEF; Material Document and Classification: QQ-B-750 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Thread Direction: RIGHT-HAND. 12 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.