Many kit manufacturers today are CNC match hole punching their kit parts, and recommend the builder open the holes up to the proper rivet hole size. One method is to ream the pre-punched holes to the correct size. Reamers give you a rounder, closer tolerance finished hole with less burrs around the holes.

We offer the most common size straight flute chucking reamers for opening up 3/32” & 1/8” pre-punched rivet holes, along with other popular sizes for use where you want an exact close tolerance fit on a fastener.

>> TIP: Drill holes 1/32" undersize & use reamers for perfectly round holes & close tolerance fits on critical holes where you want a tight or snug fit of the fastener.

3/32" (#40) Prepunched holes

Choice of:

#15365 #41 Reamer  - will make the hole slightly smaller

#15370 #40 Reamer - normal size

1/8" (#30) Prepunched holes

#15375 #30 Reamer - normal size