82° Spot Drills

Patent# 5,259,707

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  • - 2 Flutes Effective
  • - Must be held in a Collet
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Tool Info.
82° Spot Drill
Tool # Min Dia. Max Dia. L L-1 S D Clamp Screw Insert
SDCS-820 .093 .400 3.250 2.375 .500 .625 311205 44025 820
SDCS-821L .156 .580 5.360 4.250 .750 1.000 501912 103212 821
SDCS-822L .250 .880 6.535 4.875 1.000 1.120 621915 103212 822
SDCS-823 .250 1.500 4.937 2.500 1.000 1.500 621915 103212 823

Insert info.

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Insert Info.
82° Spot Drills
Insert Grades
820 A1M
821 A1M
822 A1M
823 A1M

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
82° 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
Insert Grade Description
Grade Description
A1M Tin Coated
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