Makita Wood Ship Auger Bits, 7/16in Hex Shank

Makita wood ship auger bits with a 7/16in hex shank, in a range of diameters. For boring deep, large-diameter holes through timber.

What a ship auger does

A ship auger has a long single or double flute and a threaded lead screw at the tip. The screw pulls the bit into the timber so you are not forcing it, and the deep flute carries the chips back out of the hole instead of packing them in. That is what lets it bore far deeper than a spade bit without binding or burning.

Where you need one

• Running cable and conduit through joists and studs
• Boring through beams, sleepers and thick structural timber
• Timber framing and heavy carpentry
• Drilling through timber containing the occasional nail — far more forgiving than a spade bit

Using them

• 7/16in hex shank, for impact drivers and heavy-duty drills with a compatible chuck.
• Low speed, high torque. These bits bite hard; a drill with a side handle is strongly advised.
• Let the lead screw pull. Pushing only makes it bind.
• Back the bit out occasionally on very deep holes to clear the flute.

Diameters and lengths are in the table below.

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