We ship from multiple warehouses throughout the USA
to get you what you need as fast as possible!
Millions of items in stock!
Fast online checkout - No account required
Cart 0

Holemaking Products - Counterbores & Porting Tools For Sale | A1 Tooling - (1669 Products)


APT - Blade-Type Counterbore Set Screw - 7/8" Compatibility


Item #: 04246963
Brand: APT
Model #: 05554050
Exact Tooling IR#: 04

Product Specifications
Product Type Set Screw
Fastener Size Compatibility (Inch) 7/8

$0.87

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

APT - 1/2" Fastener Compatible, 3/32" Blade Thickness Compatibility, 17/32" Pilot Hole Diam, 1/2" Shank Diam, Straight Shank, Blade Type Counterbore Holder - 5-3/4" Holder Length, Socket Head Cap Screw Compatible, High Speed Steel Holder


Item #: 08863326
Brand: APT
Model #: BH16
Exact Tooling IR#: 04

Features and Benefits

Straight shanks are used for general purpose applications. The shank is smaller than the drill bit diameter. They are used with portable drills and drill presses on ferrous and non-ferrous materials.
Product Specifications
Fastener Type Compatibility Socket-Head Cap Screw
Fastener Size Compatibility (Inch) 1/2
Blade Thickness Compatibility (Inch) 3/32
Shank Type Straight
Pilot Hole Diameter (Inch) 17/32
Shank Diameter (Inch) 1/2
Holder Length (Inch) 5-3/4
Holder Material High Speed Steel

$72.34

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

Made in USA - 1-1/8" Head Diam, 3/8" Shank Diam, Counterbore Pilot - Bright Finish, Carbon Steel


Item #: 78907706
Brand: Made in USA
Exact Tooling IR#: 04

Product Specifications
Head Diameter (Inch) 1-1/8
Shank Diameter (Inch) 3/8
Finish/Coating Bright
Aircraft-Style No
Pilot Material Carbon Steel

$51.84

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

Made in USA - 1/2" Head Diam, 7/16" Shank Diam, Counterbore Pilot - Carbon Steel


Item #: 78908324
Brand: Made in USA
Exact Tooling IR#: 04

Product Specifications
Head Diameter (Inch) 1/2
Shank Diameter (Inch) 7/16
Pilot Material Carbon Steel

$18.21

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

APT - 13/32" Cutting Diam, 1/16" Thick Blade, 1/4" Fastener Compatibility, Backward Cutting, Blade Type Counterbore Blade - High Speed Steel, Socket Head Cap Screw Compatible


Item #: 08864712
Brand: APT
Model #: ABZ13
Exact Tooling IR#: 04

Product Specifications
Fastener Type Compatibility Socket-Head Cap Screw
Fastener Size Compatibility (Inch) 1/4
Cutting Diameter (Inch) 13/32
Cutting Direction Backward
Blade Thickness (Inch) 1/16
Blade Material High Speed Steel

$33.70

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

Value Collection - 1/4" Head Diam, 3/16" Shank Diam, Counterbore Pilot - Carbon Steel


Item #: 08904161
Brand: Value Collection
Exact Tooling IR#: 04

Product Specifications
Head Diameter (Inch) 1/4
Shank Diameter (Inch) 3/16
Pilot Material Carbon Steel

$9.87

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

Cleveland - 25/32" Head Diam, 5/16" Shank Diam, Counterbore Pilot - Bright Finish, High Speed Steel


Item #: 63677769
Brand: Cleveland
Model #: C46673
Exact Tooling IR#: 04

Product Specifications
Head Diameter (Inch) 25/32
Shank Diameter (Inch) 5/16
Finish/Coating Bright
Aircraft-Style No
Pilot Material High Speed Steel
Material Application Alloy Tool Steel; Aluminum; Cast Iron; Low Carbon Steel; Medium Carbon Steel

$70.47

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

Value Collection - 13/16" Head Diam, 7/16" Shank Diam, Counterbore Pilot - Carbon Steel


Item #: 08908527
Brand: Value Collection
Exact Tooling IR#: 04

Product Specifications
Head Diameter (Inch) 13/16
Shank Diameter (Inch) 7/16
Pilot Material Carbon Steel

$18.71

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

Made in USA - 5/8" Head Diam, 1/4" Shank Diam, Counterbore Pilot - Bright Finish, Carbon Steel


Item #: 78905403
Brand: Made in USA
Exact Tooling IR#: 04

Product Specifications
Head Diameter (Inch) 5/8
Shank Diameter (Inch) 1/4
Finish/Coating Bright
Aircraft-Style No
Pilot Material Carbon Steel

$24.95

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

Union Butterfield - 3/4" Head Diam, 5/16" Shank Diam, Counterbore Pilot - Bright Finish, High Speed Steel


Item #: 66386806
Brand: Union Butterfield
Model #: 3210148
Exact Tooling IR#: 04

Product Specifications
Head Diameter (Inch) 3/4
Shank Diameter (Inch) 5/16
Finish/Coating Bright
Aircraft-Style No
Pilot Material High Speed Steel

$92.60

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

Made in USA - 7/8" Head Diam, 5/16" Shank Diam, Counterbore Pilot - Bright Finish, Carbon Steel


Item #: 78906567
Brand: Made in USA
Exact Tooling IR#: 04

Product Specifications
Head Diameter (Inch) 7/8
Shank Diameter (Inch) 5/16
Finish/Coating Bright
Aircraft-Style No
Pilot Material Carbon Steel

$34.24

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

Made in USA - 9/16" Head Diam, 5/16" Shank Diam, Counterbore Pilot - Bright Finish, Carbon Steel


Item #: 78906369
Brand: Made in USA
Exact Tooling IR#: 04

Product Specifications
Head Diameter (Inch) 9/16
Shank Diameter (Inch) 5/16
Finish/Coating Bright
Aircraft-Style No
Pilot Material Carbon Steel

$21.29

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

Made in USA - 15/16" Head Diam, 7/16" Shank Diam, Counterbore Pilot - Carbon Steel


Item #: 78908605
Brand: Made in USA
Exact Tooling IR#: 04

Product Specifications
Head Diameter (Inch) 15/16
Shank Diameter (Inch) 7/16
Pilot Material Carbon Steel

$34.82

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

Value Collection - 3/16" Head Diam, 3/32" Shank Diam, Counterbore Pilot - Carbon Steel


Item #: 08901126
Brand: Value Collection
Exact Tooling IR#: 04

Product Specifications
Head Diameter (Inch) 3/16
Shank Diameter (Inch) 3/32
Pilot Material Carbon Steel

$8.63

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

Value Collection - 15/16" Head Diam, 3/8" Shank Diam, Counterbore Pilot - Carbon Steel


Item #: 08907602
Brand: Value Collection
Exact Tooling IR#: 04

Product Specifications
Head Diameter (Inch) 15/16
Shank Diameter (Inch) 3/8
Pilot Material Carbon Steel

$21.28

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

Union Butterfield - 7/16" Head Diam, 1/8" Shank Diam, Counterbore Pilot - Bright Finish, High Speed Steel


Item #: 66386855
Brand: Union Butterfield
Model #: 3210264
Exact Tooling IR#: 04

Product Specifications
Head Diameter (Inch) 7/16
Shank Diameter (Inch) 1/8
Finish/Coating Bright
Aircraft-Style No
Pilot Material High Speed Steel

$49.87

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

Union Butterfield - 9/32" Head Diam, 1/8" Shank Diam, Counterbore Pilot - Bright Finish, High Speed Steel


Item #: 65706772
Brand: Union Butterfield
Model #: 3210261
Exact Tooling IR#: 04

Product Specifications
Head Diameter (Inch) 9/32
Shank Diameter (Inch) 1/8
Finish/Coating Bright
Aircraft-Style No
Pilot Material High Speed Steel

$44.84

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

Link Industries - 0.178" Drill, 9/32" Pilot Length, High Speed Steel Bright Finish Combo Drill & Counterbore - 0.29" Head Diam, 5/16" Body Diam, 1-15/32" OAL, #8 Socket-Head Cap Screw Compatibility, Uses Adapter UA-4


Item #: 56443955
Brand: Link Industries
Model #: 60-L2-295
Exact Tooling IR#: 04

Product Specifications
Fastener Type Compatibility Socket-Head Cap Screw
Fastener Size Compatibility (Wire) #8
Drill Size (Decimal Inch) 0.1780
Pilot Length (Inch) 9/32
Tool Material High Speed Steel
Finish/Coating Bright
Adapter Model Number Compatibility UA-4
Overall Length (Inch) 1-15/32
Cutting Direction Right Hand
Body Diameter (Inch) 5/16
Head Diameter (Decimal Inch) 0.2900
Tapered Yes

$20.08

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

Cleveland - 11/32" Head Diam, 3/16" Shank Diam, Counterbore Pilot - Bright Finish, High Speed Steel


Item #: 63677272
Brand: Cleveland
Model #: C46579
Exact Tooling IR#: 04

Product Specifications
Head Diameter (Inch) 11/32
Shank Diameter (Inch) 3/16
Finish/Coating Bright
Aircraft-Style No
Pilot Material High Speed Steel
Material Application Alloy Tool Steel; Aluminum; Cast Iron; Low Carbon Steel; Medium Carbon Steel

$29.61

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

APT - 25/32" Cutting Diam, 3/32" Thick Blade, 1/2" Fastener Compatibility, Backward Cutting, Blade Type Counterbore Blade - High Speed Steel, Socket Head Cap Screw Compatible


Item #: 08864753
Brand: APT
Model #: BBZ25
Exact Tooling IR#: 04

Product Specifications
Fastener Type Compatibility Socket-Head Cap Screw
Fastener Size Compatibility (Inch) 1/2
Cutting Diameter (Inch) 25/32
Cutting Direction Backward
Blade Thickness (Inch) 3/32
Blade Material High Speed Steel

$52.71

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It