The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-557-6793, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is General Dynamics Land Systems Canadacorp. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-557-6793 |
| Primary Part Number | R2004406 |
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | General Dynamics Land Systems Canadacorp |
| Status | ACTIVE |
| Width Across Flats | 30.0 MILLIMETERS NOMINAL MM |
| Thread Series | ISO M |
| Thread Pitch Diameters | +0.0 TO 2.5 MILLIMETERS MM |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 20.0 INCHES IN |
| Nondefinitive Spec/std Data | 12 GRADE |
| Nut Height | 14.4 MILLIMETERS NOMINAL MM |
| Surface Treatment | ZINC NUT |
| Nut Style | HEXAGON |
| Thread Quantity Per Inch | 20 |
| 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 |
|---|---|
| R2004406 | General Dynamics Land Systems Canadacorp (CAN) |
| R2004406 | Denel Vehicle Systems (ZAF) |
| Reference | Meaning |
|---|---|
| ISO7048-M20-12-A2D | 3/9 Design control — primary reference International Organization for Standardization (iso) |
| R2004406-DK00 | D/9 Drawing number reference only Denel Vehicle Systems |
NSN 5310-01-557-6793 is a Nut,self-Locking,hexagon, manufactured by General Dynamics Land Systems Canadacorp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-557-6793 has 2 manufacturer part numbers on file: R2004406 (General Dynamics Land Systems Canadacorp), R2004406 (Denel Vehicle Systems).
Key specifications for R2004406: Width Across Flats: 30.0 MILLIMETERS NOMINAL MM; Thread Series: ISO M; Thread Pitch Diameters: +0.0 TO 2.5 MILLIMETERS MM; 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.