How to choose hole punches for hardware

Snap Fasteners


Make the same size holes for both male parts and female parts.

Snap Fastener - Small
 = Round Hole Punch #8
Snap Fastener - Large
 = Round Hole Punch #12

Rivets


Make a hole for convex tube of the female part.

Rivet 3.5 mm
 = Round Hole Punch #4
Rivet 5 mm
 = Round Hole Punch #6
Rivet 6 mm
 = Round Hole Punch #8
Rivet 9 mm
 = Round Hole Punch #10
Rivet 12 mm
 = Round Hole Punch #12

Spring Snap Fasteners


Make different size holes for male parts and female parts.

Spring Snap Fastener - Small
Round Hole Punch #7
Round Hole Punch #15
Spring Snap Fastener - Medium
Round Hole Punch #7
Round Hole Punch #15
Spring Snap Fastener - Large
Round Hole Punch #8
Round Hole Punch #18

Grommets


Grommet No.23
 = Round Hole Punch #30
Grommet No.28
 = Round Hole Punch #40
Grommet No.300
 = Round Hole Punch #15
Grommet No.500
 = Round Hole Punch #20