Peddinghaus Punching Tool for Washers
Punching attachment for producing shims

- progressive punching attachment for producing shims
- 20 × 20 × 3mm, with 8mm Ø hole
- 35 × 35 × 3mm, with 10mm Ø hole
- including adjustable flat bar guide
- and exchangeable punches and dies for both shims
- complete
- part no. P-42224 620 20 00
punching machine model Hydraulic 280



Applications in steel construction
The punching tool for washers produces washers in a single operation by shearing the outer edge and punching out the centre hole. This allows washers to match bolted connections to be made in-house, for example when special sizes or specific materials are not bought in. The tool produces the finished ring shape from sheet.
Typical applications
- Production of washers to match bolted connections
- Manufacture of special and intermediate sizes that are hard to source
- Washers from in-house standard sheet and defined materials
- On-demand production of washers for repairs and special designs
- Series production of uniform washers for recurring connections
Which businesses use it
Used in steel construction, metalworking, locksmithing, and repair workshops that produce washers in-house rather than buying them in.
Frequently asked questions
Why punch washers in-house instead of buying them?
Self-punched washers make sense when special sizes, specific materials, or small required quantities are needed that are not available as standard parts. The tool produces the outer shape and the centre hole in a single operation and makes the workshop independent of supplies.
How is the washer formed during punching?
The tool punches out the central hole and shears the round outer contour from the sheet, so that the finished ring shape is created. The result depends on the tool being designed for the inner and outer diameter as well as the sheet thickness being processed.