The Washer,lock, cataloged under National Stock Number 5310-01-520-8612, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Hiab Usa Inc. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-520-8612 |
| Primary Part Number | 990-4140 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Hiab Usa Inc |
| Status | ACTIVE |
| Style Designator | SPLIT HELICAL-RIGHT HAND |
| Outside Diameter | 18.0 MILLIMETERS NOMINAL MM |
| Material Thickness | 2.0 MILLIMETERS NOMINAL MM |
| Color | NATURAL OVERALL |
| Surface Treatment | ZINC OVERALL |
| Material | STEEL OVERALL |
| Hole Diameter | 10.0 MILLIMETERS NOMINAL MM |
| 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 |
|---|---|
| 69.BD000-0032 | Rheinmetall Man Military Vehicles Australia Pty Ltd (AUS) |
| 06160322111 | Man Truck & Bus Se (DEU) |
| 990-4140 PRIMARY | Hiab Usa Inc (USA) |
| 9904140 | Hiab Australia Cargotec Australia Pty Ltd (AUS) |
| Reference | Meaning |
|---|---|
| 06.16032-2111 | 5/9 Secondary reference Rheinmetall Man Military Vehicles Australia Pty Ltd |
NSN 5310-01-520-8612 is a Washer,lock, manufactured by Hiab Usa Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-520-8612 has 4 manufacturer part numbers on file: 69.BD000-0032 (Rheinmetall Man Military Vehicles Australia Pty Ltd), 06160322111 (Man Truck & Bus Se), 990-4140 (Hiab Usa Inc), 9904140 (Hiab Australia Cargotec Australia Pty Ltd).
Key specifications for 990-4140: Style Designator: SPLIT HELICAL-RIGHT HAND; Outside Diameter: 18.0 MILLIMETERS NOMINAL MM; Material Thickness: 2.0 MILLIMETERS NOMINAL MM; Color: NATURAL OVERALL. 7 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.