The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-557-5876, 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 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 | 5310-01-557-5876 |
| Primary Part Number | ISO7040-M12-8-A2D |
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | International Organization for Standardization (iso) |
| Status | ACTIVE |
| Width Across Flats | 16.0 MILLIMETERS NOMINAL MM |
| Thread Series | ISO M |
| Thread Pitch in Millimeters | 1.75 |
| Thread Pitch Diameters | +0.0 TO 1.8 MILLIMETERS MM |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 8.0 MILLIMETERS MM |
| Locking Feature | FREE-RUNNING ALL METAL DESIGN |
| Nut Height | 10.4 MILLIMETERS NOMINAL MM |
| Nut Style | HEXAGON |
| 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 |
|---|---|
| ISO7040-M12-8-A2D PRIMARY | International Organization for Standardization (iso) (CHE) |
NSN 5310-01-557-5876 is a Nut,self-Locking,hexagon, manufactured by International Organization for Standardization (iso), classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-557-5876 has 1 manufacturer part number on file: ISO7040-M12-8-A2D (International Organization for Standardization (iso)).
Key specifications for ISO7040-M12-8-A2D: Width Across Flats: 16.0 MILLIMETERS NOMINAL MM; Thread Series: ISO M; Thread Pitch in Millimeters: 1.75; Thread Pitch Diameters: +0.0 TO 1.8 MILLIMETERS MM. 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.