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Reamers Car / Construction Reamers

Products42
BrandITM
Quick answer

ITM car and construction reamers open out and align holes in steel. 42 reamers from 3/8" to 1-1/4" with 3-flat shanks, hex shanks and fast spiral flutes, for ironworkers and fabricators.

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Choosing a car reamer

Car and construction reamers are the tapered cutters ironworkers and fabricators use to line up bolt holes and open them to size in steel. This collection is all ITM, 42 reamers in sizes from 3/8" to 1-1/4".

Most of the range, 34 reamers, has a 3-flat shank, and 29 of those are 1/2" 3-flat. There are also hex reamers in 11/16", 13/16", 15/16" and 1-1/16", Fast Spiral reamers, and a 5-step reamer running 5/16" to 9/16" for when one tool has to cover several hole sizes.

Using a reamer

Run slowly with cutting oil and steady pressure. A reamer takes a big cut for its size, so use a drill with torque to spare and hold it square. Pick the shank your drill or chuck accepts before you pick the size.

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Standard shop and field reaming3-flat shank car reamers The bulk of the range, most with a 1/2" 3-flat shank, in sizes from 3/8" to 1-1/4".
Hex-drive reamingHex car reamers Hex reamers in 11/16", 13/16", 15/16" and 1-1/16". Match the hex to your drive before ordering.
Several hole sizes, one tool5-step reamer, 5/16" to 9/16" A stepped reamer for work that needs a few sizes without changing tools.
Fewer sizes, bridge workHex bridge reamers Four hex bridge reamers for lining up holes in structural steel.See the range →

Common questions

What does a car reamer do?

It enlarges a hole and pulls misaligned holes into line, mainly in steel. Ironworkers and construction crews use it when bolted members do not quite match.

What shank styles are available?

Most of the range is 3-flat, including a large group with a 1/2" 3-flat shank. There are also hex reamers and a few 3/8" and 7/16" 3-flat sizes. The product page lists the shank for each reamer.

What speed should I run a reamer at?

Slow, with cutting oil. Reamers grab if run fast or started crooked. Hold the drill square and keep steady pressure until the cut is finished.

Know-how for Reamers Car / Construction Reamers

All guides →
Spiral-flute bridge reamer with a hex shank What Is a Reamer? Car, Bridge and Pipe Reamers Explained9 min read

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