The Washer,flat, cataloged under National Stock Number 5310-01-656-0426, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Hobson Engineering Co Pty Ltd. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-656-0426 |
| Primary Part Number | WR43ZM24 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Hobson Engineering Co Pty Ltd |
| Status | ACTIVE |
| Peripheral Shape Style | ROUND |
| Center Hole Shape Style | ROUND |
| Thickness | 3.4 MILLIMETERS MINIMUM AND 4.6 MILLIMETERS MAXIMUM 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 |
|---|---|
| WR43ZM24 | Hobson Engineering Co Pty Ltd (AUS) |
| 371240/373029 | Brighton Best Pty Ltd (AUS) |
| HWZSM9245040-01 | Haulmark Trailers (australia) Pty Ltd (AUS) |
| Reference | Meaning |
|---|---|
| ASTM F436M-TY1 M24 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-656-0426 is a Washer,flat, manufactured by Hobson Engineering Co Pty Ltd, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-656-0426 has 3 manufacturer part numbers on file: WR43ZM24 (Hobson Engineering Co Pty Ltd), 371240/373029 (Brighton Best Pty Ltd), HWZSM9245040-01 (Haulmark Trailers (australia) Pty Ltd).
Key specifications for WR43ZM24: Peripheral Shape Style: ROUND; Center Hole Shape Style: ROUND; Thickness: 3.4 MILLIMETERS MINIMUM AND 4.6 MILLIMETERS MAXIMUM MM. 3 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.