The Nut,plain,extended Washer,hexago, cataloged under National Stock Number 5310-01-563-5459, 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. Div Microdot Products. Government technical data includes 10 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 | 5310-01-563-5459 |
| Primary Part Number | K19581-06 |
| Item Name | Nut,plain,extended Washer,hexago |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Howmet Global Fastening Systems Inc. Div Microdot Products |
| Status | ACTIVE |
| Washer Outside Diameter | 0.324 INCHES MINIMUM IN |
| Width Across Flats | 0.250 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416 TYPE II, CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Temp Rating | 500.0 CELSIUS MAXIMUM DEGC |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 2B |
| Thread Quantity Per Inch | 32 |
| 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 |
|---|---|
| K19581-06 PRIMARY | Howmet Global Fastening Systems Inc. Div Microdot Products (USA) |
NSN 5310-01-563-5459 is a Nut,plain,extended Washer,hexago, manufactured by Howmet Global Fastening Systems Inc. Div Microdot Products, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-563-5459 has 1 manufacturer part number on file: K19581-06 (Howmet Global Fastening Systems Inc. Div Microdot Products).
Key specifications for K19581-06: Overall Height: 0.625 INCHES NOMINAL IN; Washer Outside Diameter: 0.324 INCHES MINIMUM IN; Width Across Flats: 0.250 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416 TYPE II, CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 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.