Products for bench top machinists | LittleMachineShop.com

Boring Bar Set, 1/2" Shank, HSS

Boring Bar Set, 1/2" Shank, HSS - Main image
$94.86 $129.95 In stock

This high speed steel 10-piece boring bar set includes boring bars for minimum bores of 5/16", 7/16", and 9/16". The bore depth ranges from 3/4" to 2 1/4".
The boring bars are made from M35 5% cobalt high speed steel.
The shanks are held to 0.000 to -0.0005" from the nominal diameter.
The stand may vary from that shown in the photo.

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Customer Reviews (5.0 / 5 · 5 reviews)

Sebastian F. ★★★★★

The 5% cobalt in the M35 steel really makes these bars hold up longer than standard HSS sets. I've already used the 9/16" bar to bore several deep holes and it's still cutting cleanly.

Jacob ★★★★★

The 1/2" shank fits my drill chuck perfectly, and the M35 cobalt steel really holds an edge on mild steel. I've bored through over a dozen 1/8" plates so far without needing to sharpen.

Carter ★★★★★

I was pleasantly surprised by the chip clearance on the smallest 5/16" bar; it cut cleanly without binding. For the price, having three different bore sizes in one set makes a lot of sense for general machine work.