Page 131 - Michigan Drill

Multi-Tool Cap Screw Counterbores
™

For Forward & Backward Application – Patented
● Designed to counterbore holes for standard cap screws. Exclusively
● Using the same piloted holder, you can forward or back By
HOLE MAKING
counterbore and spotface.
● Uses the same simple design of the multi-tool system.
● Just choose the appropriate blade for your application. Watch our instructional videos on
www.MichiganDrill.com/videos

STEP 1 STEP 2
Select the appropriate piloted holder and blade for the screw size needed. Insert the blade into the piloted holder and tighten the set screw.
For FORWARD counterboring: Use in a clockwise direction
For BACKWARD counterboring:
Use in a reverse spindle, in a counter-clockwise direction.
Piloted Holders
Screw Pilot Shank Overall Tool Price Screw Pilot Shank Overall Tool Price
Size Diameter Diameter Length No. Each Size Diameter Diameter Length No. Each
10 13/64 1/4 4 AH8 30.78 1/2 17/32 1/2 5-3/4 BH16 42.98
1/4 9/32 9/32 4 AH9 33.53 5/8 21/32 5/8 7-1/2 DH20 73.07
5/16 11/32 11/32 4-3/8 BH11 36.10 3/4 13/16 3/4 7-1/2 DH24 102.38
3/8 13/32 13/32 5 BH13 37.83 7/8 15/16 3/4 8 EH30 132.64
7/16 15/32 15/32 5-3/4 BH15 40.74 1 1-1/16 3/4 8 EH34 141.41

Compatible Blades NOTE: Select the same cutting speeds and feed rates as you would for drills of same size.
● Forward or back counterbore and spotface
● Worn blades can be ground to smaller diameters and reused
● Resharpen and modify blades to special diameters and unusual hole configurations

Forward Blades Backward Blades
Screw Cutting Blade Tool Price Screw Cutting Blade Tool Price
Size Diameter Thickness No. Each Size Diameter Thickness No. Each
No.10 21/64 1/16 AB216 16.76 1/4 13/32 1/16 ABZ13 20.37
1/4 13/32 1/16 AB13 17.11 5/16 1/2 3/32 BBZ16 25.62
5/16 1/2 3/32 BB16 21.50 3/8 19/32 3/32 BBZ19 30.10
3/8 19/32 3/32 BB19 23.73 7/16 11/16 3/32 BBZ22 30.78
7/16 11/16 3/32 BB22 25.53 1/2 25/32 3/32 BBZ25 31.81
1/2 25/32 3/32 BB25 26.65 5/8 1 3/16 DB32DN 38.08
5/8 1 3/16 DB32 27.08 3/4 1-3/16 3/16 DB38DN 40.07
3/4 1-3/16 3/16 DB38 29.07 7/8 1-3/8 1/4 EB44DN 45.85
7/8 1-3/8 1/4 EB44 33.70 1 1-9/16 1/4 EB50DN 49.40
1 1-9/16 1/4 EB50 36.40
Replacement Parts
Description Tool No. Price Each
Set Screw for AH8 and 9 Part SS540-14 .75
Set Screw for BH11, 13, 15, and 16 Part SS832-516 .75
Set Screw for DH20 and 24 Part SS51624-38 .75
Set Screw for EH30 and 34 Part SS1220-12 1.35

Sets
NOTE: Blades of similar thickness may be used in any piloted holder which accommodates that thickness.
Set Type Description Set No. Price
10 piece set contains
Forward Set a Blade and a Piloted Holder for each of AB1 282.56
the following screw sizes:
No.10, 1/4, 5/16, 3/8, 1/2
10 piece set contains
Forward & a Blade and a Piloted Holder for each of
Backward Set the following screw sizes: AB2 321.43
1/4, 5/16, 3/8, 7/16, 1/2
(reverse spindle required)
Sets supplied in wood block
129