Sheet metal punches for round recesses, type Alfra Tristar 01.
For metric ISO sizes in accordance with EN 50262. Design and application similar to standard sheet metal punch, but with punch die for standard steel. The waste piece is cut into 3 even pieces. The thrust bolt must be greased when operated with an open-end wrench; Sheet metal thickness: 2.0 mm standard steel. Pilot hole: 6.2 to 6.5 mm for thrust bolt with 6.0 mm D, 9.7 to 10 mm for thrust bolt with 9.5 mm D, 19.5 to 20 mm for thrust bolt with 20 mm.
Technical attributes (type, size, thrust bolt (Sr)): 01695, M 25, 25.4 mm, Sr 9.5 x 50 mm