Threaded shank cobalt drill bits made to fit our Rivet Removal Tool (VTS-497, sold separately).

The tool comes with one bit in each size, but bits are wear items. They dull, and on a big job, one will eventually snap. If you’re drilling out more than a handful of rivets, keep spares on hand so a broken bit doesn’t stop your project. Adding a pack when you order the tool saves you a second shipping charge and a wait later.

The 135° split points start cutting on contact instead of skating across the rivet, which is what you want on a rounded dome head. The 2" length is matched to the tool, so shorter bits won’t work in its place.

What are number size bits?

Number sizes (#30, #21, #11) are a drill sizing system that fills the gaps between fractional sizes. The higher the number, the smaller the bit. They are the standard for rivet work because each one is a few thousandths of an inch larger than the rivet it matches. You don’t need to memorize the numbers. Just pick the bit that matches your rivet diameter below.

Which size do you need?

• #30 drills out 1/8" rivets. This is by far the most common size. Nearly all factory rivets on midcentury trailer skins and interiors are 1/8".
• #21 drills out 5/32" rivets. These are commonly found on the belly pan, the skin that stretches across the underside of the steel chassis frame. You’ll also need this size to drill out Olympic rivets left behind by old repairs.
• #11 drills out 3/16" rivets.

Pack options (3 bits per pack):

• Three #30 bits
• Three #21 bits
• Three #11 bits
• Variety pack with one of each size

How many should you order?

A full skin or interior panel can mean hundreds of 1/8" rivets. If you’re planning large-scale panel removal, we recommend one or more 3-packs of the #30 so you can keep working when a bit dulls or breaks.

Specifications:

• Material: cobalt steel
• Point: 135° split point
• Shank thread: 1/4-28
• Length: 2" (not including the threaded section)