The Nut,self-Locking,assembled Washe, cataloged under National Stock Number 5310-01-657-4707, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Government technical data includes 11 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 | 5310-01-657-4707 |
| Primary Part Number | NAS1726-4 |
| Item Name | Nut,self-Locking,assembled Washe |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Washer Outside Diameter | 0.244 INCHES NOMINAL IN |
| Width Across Flats | 0.213 INCHES NOMINAL IN |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Thread Pitch Diameters | -45.0 TO 05.0 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.216 INCHES IN |
| Locking Feature | FREE-RUNNING ALL METAL DESIGN |
| Nut Height | 0.492 INCHES NOMINAL IN |
| Nut Style | EXTERNAL TOOTH |
| Thread Quantity Per Inch | 3B |
| Material | STEEL COMP 1050 OR CADMIUM 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 |
|---|---|
| NAS1726-4 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
NSN 5310-01-657-4707 is a Nut,self-Locking,assembled Washe, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-657-4707 has 1 manufacturer part number on file: NAS1726-4 (Howmet Global Fastening Systems Inc).
Key specifications for NAS1726-4: Overall Height: 0.502 INCHES NOMINAL IN; Washer Outside Diameter: 0.244 INCHES NOMINAL IN; Width Across Flats: 0.213 INCHES NOMINAL IN; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF). 11 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.