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Unitec Unibroach™ Cobalt Steel (M42) Cutters

Unibroach

Unibroach Cutters are for use with CS Unitec, Hougen®, Jancy®, and other magnetic drilling machines with 3/4″ arbor collets.

  • Made of M42 steel (8% Cobalt) which is much tougher than the M2 High Speed Steel used for conventional cutters
  • More cutting teeth reduces individual tooth loading
  • M42 metal and lower tooth load extend tool life before resharpening
  • Easier, more efficient cutting of tough-to-cut metals, such as stainless steel
  • Note: all sizes have 3/4″ shanks
Hole Diameter (inches)
Decimal Equivalent (inches)
For 1" Thick Material Part No.
For 2" Thick Material Part No.
For 3" Thick Material Part No.
7/16"
0.4375
7-1-114
7-1-214
NA
1/2"
0.5000
7-1-116
7-1-216
NA
9/16"
0.5625
7-1-118
7-1-218
NA
5/8"
0.6250
7-1-120
7-1-220
NA
11/16"
0.6875
7-1-122
7-1-222
NA
3/4"
0.7500
7-1-124
7-1-224
7-1-324
13/16"
0.8125
7-1-126
7-1-226
7-1-326
7/8"
0.8750
7-1-128
7-1-228
7-1-328
15/16"
0.9375
7-1-130
7-1-230
7-1-330
1"
1.0000
7-1-132
7-1-232
7-1-332
1-1/16"
1.0625
7-1-134
7-1-234
7-1-334
1-1/8"
1.1250
7-1-136
7-1-236
7-1-336
1-3/16"
1.1875
7-1-138
7-1-238
7-1-338
1-1/4"
1.2500
7-1-140
7-1-240
7-1-340
1-5/16"
1.3125
7-1-142
7-1-242
7-1-342
1-3/8"
1.3750
7-1-144
7-1-244
7-1-344
1-7/16"
1.4375
7-1-146
7-1-246
7-1-346
1-1/2"
1.5000
7-1-148
7-1-248
7-1-348
1-9/16"
1.5625
7-1-150
7-1-250
7-1-350
1-5/8"
1.6250
7-1-152
7-1-252
7-1-352
1-11/16"
1.6875
7-1-154
7-1-254
7-1-354
1-3/4"
1.7500
7-1-156
7-1-256
7-1-356
1-13/16"
1.8125
7-1-158
7-1-258
7-1-358
1-7/8"
1.8750
7-1-160
7-1-260
7-1-360
1-15/16"
1.9375
7-1-162
7-1-262
7-1-362
2"
2.0000
7-1-164
7-1-264
7-1-364
2-1/16"
2.0625
7-1-166
7-1-266
7-1-366

Pilots Arbors and Countersinks

Description
Part No.
Pilot 7/16", 1" depth cutter
7-3-101
Pilot 1" depth
7-3-102
Pilot 7/16", 2" depth
cutter
7-3-201
Pilot 2" depth cutter
7-3-202
Pilot 3" depth
7-3-203
No. 2 Morse Taper Arbor
7-3-902
No. 3 Morse Taper Arbor
7-3-903
No. 4 Morse Taper Arbor
7-3-904
Countersink, up to 2" hole
7-3-910

  • Contact Heavy Maintenance Supply 205-384-5284 for more information