The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-663-5256, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is International Organization for Standardization (iso). 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 | 5310-01-663-5256 |
| Primary Part Number | ISO 8673 M8X1.0-8-A2K |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | International Organization for Standardization (iso) |
| Status | ACTIVE |
| Width Across Flats | 13.0 MILLIMETERS NOMINAL MM |
| Thread Series | M |
| Thread Pitch in Millimeters | 5.0 |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 5.0 MILLIMETERS MM |
| Specification/standard Data | I9008-ISO8673 NATIONAL STD/SPEC |
| Nut Height | 6.5 MILLIMETERS NOMINAL MM |
| Surface Treatment | ZINC OVERALL |
| Nut Style | HEXAGON |
| Thread Class | M8 |
| Material | STEEL OVERALL |
| Bearing Surface Type | FLAT |
| 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 |
|---|---|
| ISO 8673 M8X1.0-8-A2K PRIMARY | International Organization for Standardization (iso) (CHE) |
NSN 5310-01-663-5256 is a Nut,plain,hexagon, manufactured by International Organization for Standardization (iso), classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-663-5256 has 1 manufacturer part number on file: ISO 8673 M8X1.0-8-A2K (International Organization for Standardization (iso)).
Key specifications for ISO 8673 M8X1.0-8-A2K: Width Across Flats: 13.0 MILLIMETERS NOMINAL MM; Thread Series: M; Thread Pitch in Millimeters: 5.0; 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.