90° Spot Drills

Patent# 5,259,707

K-Tool, Inc. 90 Degree Spot Drills.png
  • - 2 Flutes Effective
  • - Must be held in a Collet
90° Spot Drill Dimensions.png
Tool Info.
90° Spot Drills
Tool # Min Dia. Max Dia. L L-1 S D Clamp Screw Insert
SDCS-90 .070 .390 3.250 2.500 .375 .430 180310 25618 90
SDCS-900 .093 .470 3.250 2.375 .500 .625 311205 44025 900
SDCS-901 .156 .600 3.060 2.000 .500 1.000 501912 103212 901
SDCS-901L .156 .600 5.330 4.250 .750
SDCS-902 .250 .900 4.130 2.500 .750 1.125 621915 103212 902
SDCS-902L .250 .900 6.530 4.875 1.000
SDCS-9025 .250 1.270 4.690 2.625 1.000 1.250 621915 103212 9025
SDCS-903 .375 1.560 4.880 2.625 1.000 1.700 102518 142812 903

Insert Info.

90 degree Insert.png
Insert Info.
90° Spot Drills
Insert Grades
90 A1M / B1M
900 A1M / B1M / CPM4
901 A1M / B1M
901CB A1M / B1M / CPM4
902 A1M / B1M
902CB A1M / B1M / CPM4
9025 A1M / B1M
9025CB A1M
903 A1M / B1M
903CB CPM4

Technical Data

Insert Loading Procedure

  • Air Blast Pocket Clean
  • Hold Insert in place (Chisel points to front & rear)
  • - Flatted corners are to prevent loading insert backwards
  • Tighten clamps until each one makes light contact
  • Alternate tightening screws several times until screws are tight
Speed and Feed Info.
Spot Drills
Material S.F.M. I.P.R.
Mild & Low Carbon Steel
Ex. 1018, 1020, 1117, 1141, 12L14
500 - 700 .0024
High Carbon & Alloy Steel
Ex. 1045, 4140, 4340, 52100, 8620
400 - 600 .0016
Lower Carbon Tool Steel
Ex. P-20, H-13, S-7
400 - 600 .002
Tool Steel
Ex. A-2, A-6, D-2, M-2
300 - 600 .002
Stainless Steel
Ex. 304, 316, 420, 15-5PH, 17-4PH
200 - 400 .0014
Iron
Ex. Cast, Ductile, Nodular
400 - 700 .004
Nickel & Titanium Alloy
Ex. Inconel, Hastelloy, TI-6AL-4V
120 - 250 .0012
Non-Ferrous Metal
Ex. Aluminum, Bronze, Brass
1000 - 2000 .006
Insert Grade Selection
90° Spot Drills
Material Material Examples Preferred Grade
Mild & Low Carbon Steels 1018, 1020, 1117, 1141, 12L14 A1M
High Carbon & Alloy Steels 1045, 4140, 4340, 52100, 8620 A1M
Lower Carbon Tool Steels P-20, H-13, S-7 A1M
Tool Steels A-2, A-6, D-2, M-2 A1M
Stainless Steels 303, 304, 316, 420, 15-5PH, 17-4PH A1M
Iron Cast, Ductile, Nodular A1M
Nickel & Titanium Alloys Inconel, Hastelloy, TI-6AL-4V A1M
Non-Ferrous Metals Aluminum, Bronze, Brass A1M / B1M
Insert Grade Description
90° Spot Drills
Grade Description
A1M Tin Coated
B1M Uncoated Carbide - No Hone
CPM4 High Speed Steel Insert
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