The SR20K round punch is manufactured from high-quality tool steel, built for punching holes in mild steel, stainless steel, aluminum & more. Compatible with various ironworker machines such as Scotchman™, Uni-Hydro™ and more. Commonly paired with F155 or F59 Round Dies.
Ideal for punching round holes in flat bar, angle iron, channel, I-beams, and sheet metal for fabrication, maintenance, and manufacturing shops.
Compatibility
Iroquois™
Metal Pro™
Scotchman™
Uni-Hydro™
Dimensions
Shank Diameter: 1.000"
Overall Length: 3.250"
SR20K round punch size cannot exceed 1-1/4". Contact us for any custom sizes (1/64" increments, millimeters, etc.)
Use the chart in the image to the left to determine the recommended die clearance based off the material thickness you're punching. The punch and die should NOT be the same size.
Frequently Asked Questions
01
How do I verify this is the punch I need?
Check the stamp or engraving on your punch for a part number or other identifying marks then compare it with the cross reference above.
Measure your punch, including the overall length and shank diameter then verify those dimensions with the dimensions listed above or in the image.
Verify the machine make and model. Shop punches for your specific machine by using the sidebar filters on our store.
If you're still unsure, contact our customer support team and we will help identify the punch.
02
What is the largest SR20K round hole size I can punch?
The largest round hole that can be punched with a SR20K round punch is 1-1/4" diameter.
If you need a larger hole, oversized punching attachments or other punch styles may be required depending on your ironworker machine. Contact us if you need help selecting the right tooling.
03
What is the corresponding die for a SR20K round punch?
SR20K punches are most commonly paired with F155 and F59 and round dies.
Check the stamp or engraving on your die for a part number or other identifying marks.
Measure the outer diameter and height of your die then verify those dimensions with die dimensions listed in our online store or catalog.
If you're still unsure, contact our customer support team and we will help identify the correct die.
04
How do I determine the correct punch and die clearance?
The proper die clearance depends on the type and thickness of the material you're punching. Softer, thinner materials require less clearance, while harder, thicker materials require more. Use the clearance chart above to determine whether to add 1/32", 1/16", 3/32", or 1/8" to your punch diameter when selecting a die.
Fabricamos punzones, matrices, hojas de cizalla y accesorios para ferreteros y diversas punzonadoras. Contamos con el apoyo para atender a clientes fuera de los Estados Unidos y enviar nuestros productos a nivel internacional. Nuestro equipo también está en "WhatsApp", lo que nos permite comunicarnos directamente con cualquier persona, en cualquier parte del mundo. Haga clic aquí para obtener más información o ponerse en contacto con representate de servicio al cliente.
STOP
Are you using these punches and dies together? If yes, the bottom die size needs to be larger than the top punch.
To determine how much larger the bottom die should be, please refer to the chart below.
Proudly Made in the USA
