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Counterbore

Piloted counterbores allow you to accurately drill stocks with existing screw holes for pillar bedding, with no fear of the cutter wandering. Interchangeable pilots provide increased versatility, allowing two cutters to do the work of six. Makes adding pillar bedding blocks quick and easy. Pilots and cutters available in popular sizes to accommodate most bedding needs.

4-cutting flutes

1/4" drill shank

Removable pilot

Made of hardened high speed steel

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Part # / Description	Diameter (D)	Pilot Bore (P)	Shank (S)	Overall Length	Lead	Image	Qty	Price	Add Ons
4000-1 Aircraft Tool Supply 4000-1 1/4" Aircraft Counterbore	1/4"	3/32"	1/4"	2-3/4"	1 Days	(click to enlarge)		$15.99
4000-2 Aircraft Tool Supply 4000-2 9/32" Aircraft Counterbore	9/32"	3/32"	1/4"	2-3/4"	1 Days	(click to enlarge)		$18.99
4000-3 Aircraft Tool Supply 4000-3 5/16" Aircraft Counterbore	5/16"	3/32"	1/4"	2-3/4"	1 Days	(click to enlarge)		$15.99
4000-4 Aircraft Tool Supply 4000-4 11/32" Aircraft Counterbore	11/32"	3/32"	1/4"	2-3/4"	1 Days	(click to enlarge)		$18.99
4000-5 Aircraft Tool Supply 4000-5 3/8" Aircraft Counterbore	3/8"	3/32"	1/4"	2-3/4"	1 Days	(click to enlarge)		$18.99
4000-6 Aircraft Tool Supply 4000-6 13/32" Aircraft Counterbore	13/32"	1/8"	1/4"	2-3/4"	1 Days	(click to enlarge)		$18.99
4000-7 Aircraft Tool Supply 4000-7 7/16" Aircraft Counterbore	7/16"	1/8"	1/4"	2-3/4"	1 Days	(click to enlarge)		$15.99
4000-8 Aircraft Tool Supply 4000-8 15/32" Aircraft Counterbore	15/32"	1/8"	1/4"	2-3/4"	1 Days	(click to enlarge)		$21.99
4000-9 Aircraft Tool Supply 4000-9 1/2" Aircraft Counterbore	1/2"	1/8"	1/4"	2-3/4"	1 Days	(click to enlarge)		$22.99
4000-10 Aircraft Tool Supply 4000-10 17/32" Aircraft Counterbore	17/32"	1/8"	1/4"	2-3/4"	1 Days	(click to enlarge)		$17.99
4000-11 Aircraft Tool Supply 4000-11 9/16" Aircraft Counterbore	9/16"	1/8"	1/4"	2-3/4"	1 Days	(click to enlarge)		$21.99
4000-12 Aircraft Tool Supply 4000-12 19/32" Aircraft Counterbore	19/32"	1/8"	1/4"	2-3/4"	1 Days	(click to enlarge)		$28.99
4000-13 Aircraft Tool Supply 4000-13 5/8" Aircraft Counterbore	5/8"	1/8"	1/4"	2-3/4"	1 Days	(click to enlarge)		$23.99
4000-14 Aircraft Tool Supply 4000-14 21/32" Aircraft Counterbore	21/32"	3/16"	1/4"	2-3/4"	1 Days	(click to enlarge)		$28.99
4000-15 Aircraft Tool Supply 4000-15 11/16" Aircraft Counterbore	11/16"	3/16"	1/4"	2-3/4"	1 Days	(click to enlarge)		$35.99
4000-16 Aircraft Tool Supply 4000-16 23/32" Aircraft Counterbore	23/32"	3/16"	1/4"	2-3/4"	1 Days	(click to enlarge)		$41.99
4000-17 Aircraft Tool Supply 4000-17 3/4" Aircraft Counterbore	3/4"	3/16"	1/4"	2-3/4"	1 Days	(click to enlarge)		$44.99
4000-18 Aircraft Tool Supply 4000-18 25/32" Aircraft Counterbore	25/32"	3/16"	1/4"	2-3/4"	1 Days	(click to enlarge)		$45.99
4000-19 Aircraft Tool Supply 4000-19 13/16" Aircraft Counterbore	13/16"	3/16"	1/4"	2-3/4"	1 Days	(click to enlarge)		$54.99
4000-20 Aircraft Tool Supply 4000-20 27/32" Aircraft Counterbore	27/32"	3/16"	1/4"	2-3/4"	1 Days	(click to enlarge)		$48.99
4000-21 Aircraft Tool Supply 4000-21 7/8" Aircraft Counterbore	7/8"	3/16"	1/4"	2-3/4"	1 Days	(click to enlarge)		$48.99
4000-22 Aircraft Tool Supply 4000-22 29/32" Aircraft Counterbore	29/32"	3/16"	1/4"	2-3/4"	1 Days	(click to enlarge)		$50.99
4000-23 Aircraft Tool Supply 4000-23 15/16" Aircraft Counterbore	15/16"	3/16"	1/4"	2-3/4"	1 Days	(click to enlarge)		$50.99
4000-24 Aircraft Tool Supply 4000-24 31/32" Aircraft Counterbore	31/32"	3/16"	1/4"	2-3/4"	1 Days	(click to enlarge)		$61.99
4000-25 Aircraft Tool Supply 4000-25 1" Aircraft Counterbore	1"	3/16"	1/4"	2-3/4"	1 Days	(click to enlarge)		$61.99
4000-26 Aircraft Tool Supply 4000-26 1-1/4" Aircraft Counterbore	1-1/4"	3/16"	1/4"	2-3/4"	1 Days	(click to enlarge)		$66.99

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Counterbore

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