20mm Punches | McMaster-Carr

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33 Products

Strengthened edges cut holes in soft metal. These punches are also known as arch punches.

For technical drawings and 3-D models, click on a part number.

For Use On Brass, Copper, Fabric, Leather, Rubber
For Hole Dia.	Lg.	Material		Each
20mm	5 1/2"	Steel	000000	000000

Use these punches to make round holes in soft, nonmetallic materials.

For technical drawings and 3-D models, click on a part number.

For Use On Fabric, Leather, Rubber
For Hole Dia.	Lg.	Material		Each
20mm	5"	Steel	0000000	000000

For accurate punching of inner and outer holes, these sets come with pilots that attach to the outer hole punch.

For Use On Aluminum, Brass, Copper, Cork, Fiberglass, Iron, Leather, Plastic, Rubber, Stainless Steel, Steel
Includes	For Hole Dia.	Pilot Dia.	For Max. Steel Thick.	Material	Container Type		Each
10 Punches, 9 Pilots	3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 10mm, 12mm, 16mm, 20mm	3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 10mm, 12mm, 16mm	0.6mm	Steel	Plastic Case	0000000	0000000

Attach two punch heads to the handle at the same time to punch a gasket or washer in a single strike.

Punch Sets

For Use On Aluminum, Cork, Fabric, Leather, Plastic, Rubber
Includes	For Hole Dia.	Material	Container Type		Each
10 Punches, Handle	3mm, 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm	Steel	Plastic Case	00000000	0000000
15 Punches, Handle	3mm, 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm	Steel	Plastic Case	00000000	000000
29 Punches, Handle	2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm, 32mm, 34mm, 36mm, 38mm, 40mm, 42mm, 44mm, 46mm, 48mm, 50mm	Steel	Plastic Case	00000000	000000

Replacement Punches