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Countersinks / 79

HSS Chatterless 6 Flute Countersink
M.A.FordMax®
Standard 6 Flute countersinks are designed for economical, general purpose countersinking, chamfering or deburring. Because of the multiple flute design, chip loads are generally smaller.  Even at maximum speeds, chatter-free machining is possible.  
  • 6 Flutes
  • HSS
  • Available with 60°, 82°, 90°, 100° and 120° included angles
  • Included Angle Code (8th character of tool number): 1=60°, 2=82°, 3=90°, 4=100°, 6=120°
  • Straight shank with tang drive on sizes 1-1/4" and above
  • Steam homogeneous surface treatment (blackening) is used to prolong tool life and prevent galling
  • Uncoated, coating available upon request

Materials

  • Steel
  • Stainless steel
  • Cast iron
  • Non-Ferrous
  • Super-alloys and titanium
  • Hard material

Series Attributes

Product Range

Tool No. EDP Diameter (D/D1) Shank Diameter (D2) Overall Length (L1) Non-Cutting Tip Dia Max (D3) Included Angle (A) Material Coating Shank Type
.1250 79012501 79021 1/8 1/8 1-1/2 .030 60° HSS Uncoated Straight
.1250 79012502 79026 1/8 1/8 1-1/2 .030 82° HSS Uncoated Straight
.1250 79012503 79031 1/8 1/8 1-1/2 .030 90° HSS Uncoated Straight
.1250 79012504 79036 1/8 1/8 1-1/2 .030 100° HSS Uncoated Straight
.1250 79012506 79041 1/8 1/8 1-1/2 .030 120° HSS Uncoated Straight
.1875 79018701 79046 3/16 3/16 1-1/2 .040 60° HSS Uncoated Straight
.1875 79018702 79051 3/16 3/16 1-1/2 .040 82° HSS Uncoated Straight
.1875 79018703 79056 3/16 3/16 1-1/2 .040 90° HSS Uncoated Straight
.1875 79018704 79061 3/16 3/16 1-1/2 .040 100° HSS Uncoated Straight
.1875 79018706 79066 3/16 3/16 1-1/2 .040 120° HSS Uncoated Straight
.2500 79025001 79071 1/4 1/4 2 .060 60° HSS Uncoated Straight
.2500 79025002 79076 1/4 1/4 2 .060 82° HSS Uncoated Straight
.2500 79025003 79081 1/4 1/4 2 .060 90° HSS Uncoated Straight
.2500 79025004 79086 1/4 1/4 2 .060 100° HSS Uncoated Straight
.2500 79025006 79091 1/4 1/4 2 .060 120° HSS Uncoated Straight
.2500 79025002T 76866 1/4 1/4 2 .060 82° HSS Uncoated Tang
.3125 79031201 79096 5/16 1/4 2 .080 60° HSS Uncoated Straight
.3125 79031202 79101 5/16 1/4 2 .080 82° HSS Uncoated Straight
.3125 79031203 79106 5/16 1/4 2 .080 90° HSS Uncoated Straight
.3125 79031204 79111 5/16 1/4 2 .080 100° HSS Uncoated Straight
.3125 79031206 79116 5/16 1/4 2 .080 120° HSS Uncoated Straight
.3750 79037501 79121 3/8 1/4 2 .090 60° HSS Uncoated Straight
.3750 79037502 79126 3/8 1/4 2 .090 82° HSS Uncoated Straight
.3750 79037503 79131 3/8 1/4 2 .090 90° HSS Uncoated Straight
.3750 79037504 79136 3/8 1/4 2 .090 100° HSS Uncoated Straight
.3750 79037506 79141 3/8 1/4 2 .090 120° HSS Uncoated Straight
.5000 79050001 79146 1/2 3/8 2 .150 60° HSS Uncoated Straight
.5000 79050002 79151 1/2 3/8 2 .150 82° HSS Uncoated Straight
.5000 79050003 79156 1/2 3/8 2 .150 90° HSS Uncoated Straight
.5000 79050004 79161 1/2 3/8 2 .150 100° HSS Uncoated Straight
.5000 79050006 79166 1/2 3/8 2 .150 120° HSS Uncoated Straight
.6250 79062501 79171 5/8 3/8 2-1/4 .180 60° HSS Uncoated Straight
.6250 79062502 79176 5/8 3/8 2-1/4 .180 82° HSS Uncoated Straight
.6250 79062503 79181 5/8 3/8 2-1/4 .180 90° HSS Uncoated Straight
.6250 79062504 79186 5/8 3/8 2-1/4 .180 100° HSS Uncoated Straight
.6250 79062506 79191 5/8 3/8 2-1/4 .180 120° HSS Uncoated Straight
.6250 79062503T 76867 5/8 3/8 2-1/4 .180 90° HSS Uncoated Tang
.7500 79075001 79196 3/4 1/2 2-3/4 .210 60° HSS Uncoated Straight
.7500 79075002 79201 3/4 1/2 2-3/4 .210 82° HSS Uncoated Straight
.7500 79075003 79206 3/4 1/2 2-3/4 .210 90° HSS Uncoated Straight
.7500 79075004 79211 3/4 1/2 2-3/4 .210 100° HSS Uncoated Straight
.7500 79075006 79216 3/4 1/2 2-3/4 .210 120° HSS Uncoated Straight
.7500 79075002T 76868 3/4 1/2 2-3/4 .210 82° HSS Uncoated Tang
.7500 79075003T 76869 3/4 1/2 2-3/4 .210 90° HSS Uncoated Tang
.7500 79075006T 76870 3/4 1/2 2-3/4 .210 120° HSS Uncoated Tang
.8750 79087501 79221 7/8 1/2 2-3/4 .230 60° HSS Uncoated Straight
.8750 79087502 79226 7/8 1/2 2-3/4 .230 82° HSS Uncoated Straight
.8750 79087503 79231 7/8 1/2 2-3/4 .230 90° HSS Uncoated Straight
.8750 79087504 79236 7/8 1/2 2-3/4 .230 100° HSS Uncoated Straight
.8750 79087506 79241 7/8 1/2 2-3/4 .230 120° HSS Uncoated Straight
1.0000 79100001 79246 1 1/2 2-3/4 .250 60° HSS Uncoated Straight
1.0000 79100002 79251 1 1/2 2-3/4 .250 82° HSS Uncoated Straight
1.0000 79100003 79256 1 1/2 2-3/4 .250 90° HSS Uncoated Straight
1.0000 79100004 79261 1 1/2 2-3/4 .250 100° HSS Uncoated Straight
1.0000 79100006 79266 1 1/2 2-3/4 .250 120° HSS Uncoated Straight
1.0000 79100002T 76871 1 1/2 2-3/4 .250 82° HSS Uncoated Tang
1.0000 79100003T 76872 1 1/2 2-3/4 .250 90° HSS Uncoated Tang
1.2500 79125001 79271 1-1/4 1/2 3 .370 60° HSS Uncoated Tang
1.2500 79125002 79276 1-1/4 1/2 3 .370 82° HSS Uncoated Tang
1.2500 79125003 79281 1-1/4 1/2 3 .370 90° HSS Uncoated Tang
1.2500 79125004 79286 1-1/4 1/2 3 .370 100° HSS Uncoated Tang
1.2500 79125006 79291 1-1/4 1/2 3 .370 120° HSS Uncoated Tang
1.5000 79150001 79296 1-1/2 3/4 3-1/2 .430 60° HSS Uncoated Tang
1.5000 79150002 79301 1-1/2 3/4 3-1/2 .430 82° HSS Uncoated Tang
1.5000 79150003 79306 1-1/2 3/4 3-1/2 .430 90° HSS Uncoated Tang
1.5000 79150004 79311 1-1/2 3/4 3-1/2 .430 100° HSS Uncoated Tang
1.5000 79150006 79316 1-1/2 3/4 3-1/2 .430 120° HSS Uncoated Tang
2.0000 79200001 79321 2 3/4 3-3/4 .620 60° HSS Uncoated Tang
2.0000 79200002 79326 2 3/4 3-3/4 .620 82° HSS Uncoated Tang
2.0000 79200003 79331 2 3/4 3-3/4 .620 90° HSS Uncoated Tang
2.0000 79200004 79336 2 3/4 3-3/4 .620 100° HSS Uncoated Tang
2.0000 79200006 79341 2 3/4 3-3/4 .620 120° HSS Uncoated Tang
2.5000 79250001 79346 2-1/2 3/4 5 .750 60° HSS Uncoated Tang
2.5000 79250002 79351 2-1/2 3/4 5 .750 82° HSS Uncoated Tang
2.5000 79250003 79356 2-1/2 3/4 5 .750 90° HSS Uncoated Tang
3.0000 79300001 79361 3 3/4 5-1/4 1.000 60° HSS Uncoated Tang
3.0000 79300002 79366 3 3/4 5-1/4 1.000 82° HSS Uncoated Tang
3.0000 79300003 79371 3 3/4 5-1/4 1.000 90° HSS Uncoated Tang
3.0000 79800001 10916 Set 8 pc. 1/8 3/16 1/4 3/8 1/2 5/8 3/4 1 x 60° 60° HSS Uncoated Straight
3.0000 79800002 10917 Set 8 pc. 1/8 3/16 1/4 3/8 1/2 5/8 3/4 1 x 82° 82° HSS Uncoated Straight
3.0000 79800003 10918 Set 8 pc. 1/8 3/16 1/4 3/8 1/2 5/8 3/4 1 x 90° 90° HSS Uncoated Straight
3.0000 79800004 76873 Set 8 pc. 1/8 3/16 1/4 3/8 1/2 5/8 3/4 1 x 100° 100° HSS Uncoated Straight
3.0000 79800006 76874 Set 8 pc. 1/8 3/16 1/4 3/8 1/2 5/8 3/4 1 x 120° 120° HSS Uncoated Straight