The Washer,shouldered and Recessed, cataloged under National Stock Number 5310-01-520-8603, 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 1 specification, cited from the U.S. Government catalog. The record lists 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-520-8603 |
| Primary Part Number | 842-4942 |
| Item Name | Washer,shouldered and Recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Hiab Usa Inc |
| Status | ACTIVE |
| Color | NATURAL 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 |
|---|---|
| 4KK725 | Oshkosh Defense Llc (USA) |
| 81.93030-0297 | Rheinmetall Landsysteme Gmbh (DEU) |
| 842-4942 PRIMARY | Hiab Usa Inc (USA) |
| 81.93030-0297 | Rheinmetall Man Military Vehicles Australia Pty Ltd (AUS) |
| 8424942 | Hiab Australia Cargotec Australia Pty Ltd (AUS) |
| 81930300297 | Man Truck & Bus Uk Limited (GBR) |
| Reference | Meaning |
|---|---|
| 4KK725 | 5/9 Secondary reference Oshkosh Corp |
NSN 5310-01-520-8603 is a Washer,shouldered and Recessed, manufactured by Hiab Usa Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-520-8603 has 6 manufacturer part numbers on file: 4KK725 (Oshkosh Defense Llc), 81.93030-0297 (Rheinmetall Landsysteme Gmbh), 842-4942 (Hiab Usa Inc), 81.93030-0297 (Rheinmetall Man Military Vehicles Australia Pty Ltd), 8424942 (Hiab Australia Cargotec Australia Pty Ltd) and 1 more.
Key specifications for 842-4942: Overall Length: 30.0 MILLIMETERS NOMINAL MM; Overall Width: 7.0 MILLIMETERS NOMINAL MM; Color: NATURAL OVERALL; Special Features: NET WEIGHT OF 0.018KG; KG. 1 specification is 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.