Page 147 - Michigan Drill

Carbide Inserted Socket Head

Cap Screw Counterbores

• Increased cutting speeds over H.S.
• Unique design allowing no clamps to impede chip flow.
Screw Pilot Outer Shank Overall No. of Tool No. Price C6 carbide insert and Torx®
Size Dia. Dia. Dia. Length Flutes Each wrench included with each tool.
3/8 13/32 19/32 1/2 4-3/8 1 CB375 92.59 COUNTERBORES
7/16 15/32 11/16 1/2 4-7/16 1 CB437 97.19
1/2 17/32 25/32 5/8 4-1/2 1 CB500 108.65 Sets
5/8 21/32 31/32 5/8 4-5/8 2 CB625 147.81
3/4 13/16 1-3/16 3/4 4-3/4 3 CB750 182.99 Size Pcs. Set No. Price
7/8 15/16 1-3/8 3/4 4-7/8 3 CB875 225.42 3/8, 7/16, 1/2, 5/8 4 CBS1 446.24
1 1-1/16 1-9/16 3/4 5 3 CB1000 245.47 3/4, 7/8, 1" 3 CBS2 659.64

Replacement Parts
TPGH Carbide Inserts
Triangle - Positive rake - Ground all over with chip groove on one side Part No. Description Price
Price Each PART TF832-285 Torx® drive flat head screw for 3/8" I.C. 2.50
Insert PART TF440-195 Torx® drive flat head screw for 1/4" I.C. 1.79
TiN
Number I.C. Thickness Radius C-2 C-6 Coated* PART CTW-10 Torx® wrench for 3/8" I.C. T-10 3.50
TPGH21.50 1/4 3/32 0 6.80 6.80 7.96 PART CTW-6 Torx® wrench for 1/4" I.C. T-6 2.79
TPGH21.51 1/4 3/32 1/64 6.80 6.80 7.96 PART MSTLA625 Micro-range screw for use with 5/8 dia. holder 12.16
TPGH21.52 1/4 3/32 1/32 6.80 6.80 7.96 PART MSTLA750 Micro-range screw for use with 3/4 dia. holder 12.87
TPGH321 3/8 1/8 1/64 7.42 7.42 9.04 PART MSTLA1000 Micro-range screw for use with 1" dia. holder 14.30
TPGH322 3/8 1/8 1/32 7.42 7.42 9.04 PART MSTLA1250 Micro-range screw for use with 1-1/4" dia. holder 15.02
*C-6 Grade TiN Coated

Multi-Tool Cap Screw Counterbores

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

STEP 1 Select the appropriate piloted holder and blade for STEP 2 Insert the blade into the piloted holder and tighten the set screw.
the screw size needed. For FORWARD counterboring: Use in a clockwise direction
For BACKWARD counterboring: Use in a reverse spindle,
Piloted Holders counter-clockwise direction.
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
• Forward or Back Counterbore • Worn blades can be ground to smaller diameters and reused
• Spotface
• Resharpen and modify blades to special diameters NOTE: Select the same cutting speeds and feed rates
and unusual hole configurations as you would for drills of same size.
Forward Blades Backward Blades Forward Blades Backward Blades
Screw Cutting Blade Blade Price Blade Price Screw Cutting Blade Blade Price Blade Price
Size Dia. Thickness No. Each No. Each Size Dia. Thickness No. Each No. Each
No.10 21/64 1/16 AB216 16.76 –– –– 1/2 25/32 3/32 BB25 26.65 BBZ25 31.81
1/4 13/32 1/16 AB13 17.11 ABZ13 20.37 5/8 1 3/16 DB32 27.08 DB32DN 38.08
5/16 1/2 3/32 BB16 21.50 BBZ16 25.62 3/4 1-3/16 3/16 DB38 29.07 DB38DN 40.07
3/8 19/32 3/32 BB19 23.73 BBZ19 30.10 7/8 1-3/8 1/4 EB44 33.70 EB44DN 45.85
7/16 11/16 3/32 BB22 25.53 BBZ22 30.78 1 1-9/16 1/4 EB50 36.40 EB50DN 49.40
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