Products for bench top machinists | LittleMachineShop.com

Boring Head Shank, R8

Boring Head Shank, R8 - Main image
$21.56 $29.95 In stock

This boring head shank has an R8 taper on one end and a 7/8"-20 thread on the other.

The mill boring head shank adapts our boring head to mills with an R8 spindle.

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.8 / 5 · 5 reviews)

Riley T. ★★★★★

Finally got my boring head set up in the Bridgeport, and this shank threaded on without any fuss. The 7/8"-20 thread matched perfectly, so it's holding solid with no wobble. Nice to have a proper R8 adapter that just works.

Matthew E. ★★★★★

The R8 taper seats perfectly in my mill spindle with no wobble, and the 7/8"-20 threads mate cleanly with my boring head. It's solid and true, exactly what I needed to get precise bore alignment.

Ava V. ★★★★★

Threaded right onto my boring head without any fuss, and the R8 shank seated snugly in the spindle with zero wobble.