6-Series HSS High-Speed Steel Cutters

High-speed Steel for Drilling 3x Faster Than Twist Drills

  • 6-Series HSS High-Speed Steel Cutters
  • 6-Series HSS High-Speed Steel Cutter Group
  • 6-Series HSS High-Speed Steel Cutter drilling into iBeam
  • 6-Series HSS High-Speed Steel Cutter Kit
  • 6-Series HSS High-Speed Steel Cutters
  • 6-Series HSS High-Speed Steel Cutter Group
  • 6-Series HSS High-Speed Steel Cutter drilling into iBeam
  • 6-Series HSS High-Speed Steel Cutter Kit
  • Available in sizes up to 5-1/8" dia., 8" depth
  • Special and metric sizes available
  • Reamed quality burr-free holes and solid slugs
  • Resharpenable cutting edges
  • No time-consuming pilot holes and step drilling
  • Cutters up to 4" depth come with corresponding pilot pin
  • Available in all sizes - fractional and metric

* HSS Cutters must be used with lubricant.  View CS Unitec's lubricants and cutting oils.

For custom cutter sizes and specifications, call 1-800-700-5919 or 203-853-9522 for assistance.

  • 1" to 3" Depths
  • 4" to 8" Depths
  • Metric Depths
  • Cutter Kits - NEW
  • Pilot Pins
  • Reference Info
Order No. Diameter
1" Depth
6-1-1147/16"
6-1-1161/2"
6-1-1189/16"
6-1-1205/8"
6-1-12211/16"
6-1-1243/4"
6-1-12613/16"
6-1-1287/8"
6-1-13015/16"
6-1-1321"
6-1-1341-1/16"
6-1-1361-1/8"
6-1-1381-3/16"
6-1-1401-1/4"
6-1-1421-5/16"
6-1-1441-3/8"
6-1-1461-7/16"
6-1-1481-1/2"
6-1-1501-9/16"
6-1-1521-5/8"
6-1-1541-11/16"
6-1-1561-3/4"
6-1-1581-13/16"
6-1-1601-7/8"
6-1-1621-15/16"
6-1-1642"
6-1-1662-1/16"
6-1-1682-1/8"
6-1-1702-3/16"
6-1-1722-1/4"
6-1-1742-5/16"
6-1-1762-3/8"
6-1-1782-7/16"
6-1-1802-1/2"
6-1-1822-9/16"
6-1-1842-5/8"
6-1-1862-11/16"
6-1-1882-3/4"
6-1-1902-13/16"
6-1-1922-7/8"
6-1-1942-15/16"
6-1-1963"
6-1-1983-1/16"
6-1-11003-1/8"
6-1-11023-3/16"
6-1-11043-1/4"
6-1-11063-5/16"
6-1-11083-3/8"
6-1-11103-7/16"
6-1-11123-1/2"
6-1-11143-9/16"
6-1-11163-5/8"
6-1-11183-11/16"
6-1-11203-3/4"
6-1-11223-13/16"
6-1-11243-7/8"
6-1-11263-15/16"
6-1-11284"
Order No.Diameter
2" Depth
6-1-2147/16"
6-1-2161/2"
6-1-2189/16"
6-1-2205/8"
6-1-22211/16"
6-1-2243/4"
6-1-22613/16"
6-1-2287/8"
6-1-23015/16"
6-1-2321"
6-1-2341-1/16"
6-1-2361-1/8"
6-1-2381-3/16"
6-1-2401-1/4"
6-1-2421-5/16"
6-1-2441-3/8"
6-1-2461-7/16"
6-1-2481-1/2"
6-1-2501-9/16"
6-1-2521-5/8"
6-1-2541-11/16"
6-1-2561-3/4"
6-1-2581-13/16"
6-1-2601-7/8"
6-1-2621-15/16"
6-1-2642"
6-1-2662-1/16"
6-1-2682-1/8"
6-1-2702-3/16"
6-1-2722-1/4"
6-1-2742-5/16"
6-1-2762-3/8"
6-1-2782-7/16"
6-1-2802-1/2"
6-1-2822-9/16"
6-1-2842-5/8"
6-1-2862-11/16"
6-1-2882-3/4"
6-1-2902-13/16"
6-1-2922-7/8"
6-1-2942-15/16"
6-1-2963"
6-1-2983-1/16"
6-1-21003-1/8"
6-1-21023-3/16"
6-1-21043-1/4"
6-1-21063-5/16"
6-1-21083-3/8"
6-1-21103-7/16"
6-1-21123-1/2"
6-1-21143-9/16"
6-1-21163-5/8"
6-1-21183-11/16"
6-1-21203-3/4"
6-1-21223-13/16"
6-1-21243-7/8"
6-1-21263-15/16"
6-1-21284"
Order No.Diameter
3" Depth
6-1-3243/4"
6-1-32613/16"
6-1-3287/8"
6-1-33015/16"
6-1-3321"
6-1-3341-1/16"
6-1-3361-1/8"
6-1-3381-3/16"
6-1-3401-1/4"
6-1-3421-5/16"
6-1-3441-3/8"
6-1-3461-7/16"
6-1-3481-1/2"
6-1-3501-9/16"
6-1-3521-5/8"
6-1-3541-11/16"
6-1-3561-3/4"
6-1-3581-13/16"
6-1-3601-7/8"
6-1-3621-15/16"
6-1-3642"
6-1-3662-1/16"
6-1-3682-1/8"
6-1-3702-3/16"
6-1-3722-1/4"
6-1-3742-5/16"
6-1-3762-3/8"
6-1-3782-7/16"
6-1-3802-1/2"
6-1-3822-9/16"
6-1-3842-5/8"
6-1-3862-11/16"
6-1-3882-3/4"
6-1-3902-13/16"
6-1-3922-7/8"
6-1-3942-15/16"
6-1-3963"
6-1-3983-1/16"
6-1-31003-1/8"
6-1-31023-3/16"
6-1-31043-1/4"
6-1-31063-5/16"
6-1-31083-3/8"
6-1-31103-7/16"
6-1-31123-1/2"
6-1-31143-9/16"
6-1-31163-5/8"
6-1-31183-11/16"
6-1-31203-3/4"
6-1-31223-13/16"
6-1-31243-7/8"
6-1-31263-15/16"
6-1-31284"

Order No. Diameter
4" Depth
6-1-4243/4"
6-1-42613/16"
6-1-4287/8"
6-1-43015/16"
6-1-4321"
6-1-4341-1/16"
6-1-4361-1/8"
6-1-4381-3/16"
6-1-4401-1/4"
6-1-4421-5/16"
6-1-4441-3/8"
6-1-44411-7/64"
6-1-4451-7/32"
6-1-4461-7/16"
6-1-4481-1/2"
6-1-4501-9/16"
6-1-4521-5/8"
6-1-4541-11/16"
6-1-4561-3/4"
6-1-4581-13/16"
6-1-4601-7/8"
6-1-4621-15/16"
6-1-4642"
6-1-4662-1/16"
6-1-4682-1/8"
6-1-4702-3/16"
6-1-4722-1/4"
6-1-4742-5/16"
6-1-4762-3/8"
6-1-4782-7/16"
6-1-4802-1/2"
6-1-4822-9/16"
6-1-4842-5/8"
6-1-4862-11/16"
6-1-4882-3/4"
6-1-4902-13/16"
6-1-4922-7/8"
6-1-4942-15/16"
6-1-4963"
6-1-4983-1/16"
6-1-41003-1/8"
6-1-41023-3/16"
6-1-41043-1/4"
6-1-41063-5/16"
6-1-41083-3/8"
6-1-41103-7/16"
6-1-41123-1/2"
6-1-41143-9/16"
6-1-41163-5/8"
6-1-41183-11/16"
6-1-41203-3/4"
6-1-41223-13/16"
6-1-41243-7/8"
6-1-41263-15/16"
6-1-41284"
6-1-41324-1/32"
6-1-41364-1/4"
6-1-41444-1/2"
6-1-41765-1/2"
6-1-41906"
Order No.Diameter
5" Depth
6-1-52613/16"
6-1-53015/16"
6-1-5321"
6-1-5341-1/16"
6-1-5381-3/16"
6-1-5421-5/16"
6-1-5441-3/8"
6-1-5481-1/2"
6-1-5501-9/16"
6-1-5561-3/4"
6-1-5722-1/4"
6-1-5963"
6-1-51043-1/4"
Order No.Diameter
6" Depth
6-1-6161/2"
6-1-6243/4"
6-1-62613/16"
6-1-6287/8"
6-1-63015/16"
6-1-6321"
6-1-6341-1/16"
6-1-6361-1/8"
6-1-6381-3/16"
6-1-6401-1/4"
6-1-6421-5/16"
6-1-6441-3/8"
6-1-6461-7/16"
6-1-6481-1/2"
6-1-6561-3/4"
6-1-6642"
6-1-6682-1/8"
6-1-6702-3/16"
6-1-6722-1/4"
6-1-6963"
6-1-61043-1/4"
6-1-61123-1/2"
6-1-61203-3/4"
6-1-61284"

 

Order No.Diameter
7" Depth
6-1-71023-3/16"
6-1-71123-1/2"
Order No.Diameter
8" Depth
6-1-8802-1/2"
6-1-81284"

25mm Depth
Order No.Diameter
6-2-251212mm
6-2-251313mm
6-2-251414mm
6-2-251515mm
6-2-251616mm
6-2-251717mm
6-2-251818mm
6-2-251919mm
6-2-252020mm
6-2-252121mm
6-2-252222mm
6-2-252323mm
6-2-252424mm
6-2-252525mm
6-2-252626mm
6-2-252727mm
6-2-252828mm
6-2-252929mm
6-2-253030mm
6-2-253131mm
6-2-253232mm
6-2-253333mm
6-2-253434mm
6-2-253535mm
6-2-253636mm
6-2-253737mm
6-2-253838mm
6-2-253939mm
6-2-254040mm
6-2-254141mm
6-2-254242mm
6-2-254343mm
6-2-254444mm
6-2-254545mm
6-2-254646mm
6-2-254747mm
6-2-254848mm
6-2-254949mm
6-2-255050mm
6-2-255151mm
6-2-255252mm
6-2-255555mm
6-2-256060mm
6-2-256565mm
6-2-257070mm
6-2-257676mm
6-2-257878mm
6-2-258080mm
6-2-258181mm
6-2-258585mm
6-2-258787mm
6-2-258888mm
6-2-259090mm
6-2-259494mm
6-2-259595mm
6-2-2600100mm
6-2-25110110mm
6-2-25120120mm
50mm Depth
Order No.Diameter
6-2-501212mm
6-2-501313mm
6-2-501414mm
6-2-501515mm
6-2-501616mm
6-2-501717mm
6-2-501818mm
6-2-501919mm
6-2-502020mm
6-2-502121mm
6-2-502222mm
6-2-502323mm
6-2-502424mm
6-2-502525mm
6-2-502626mm
6-2-502727mm
6-2-502828mm
6-2-502929mm
6-2-503030mm
6-2-503131mm
6-2-503232mm
6-2-503333mm
6-2-503434mm
6-2-503535mm
6-2-503636mm
6-2-503737mm
6-2-503838mm
6-2-503939mm
6-2-504040mm
6-2-504141mm
6-2-504242mm
6-2-504343mm
6-2-504444mm
6-2-504545mm
6-2-504646mm
6-2-504747mm
6-2-504848mm
6-2-504949mm
6-2-505050mm
6-2-505151mm
6-2-505252mm
6-2-505454mm
6-2-505555mm
6-2-505656mm
6-2-505858mm
6-2-505959mm
6-2-506060mm
6-2-506161mm
6-2-506262mm
6-2-506565mm
6-2-507070mm
6-2-507474mm
6-2-5076.576.5mm
6-2-508080mm
6-2-508181mm
6-2-508585mm
6-2-508787mm
6-2-508888mm
9-2-509090mm
9-2-509191mm
9-2-509595mm
9-2-5100100mm
75mm Depth
Order No.Diameter
6-2-7517517.5mm
6-2-752121mm
6-2-752323mm
6-2-752424mm
6-2-752525mm
6-2-752626mm
6-2-752727mm
6-2-753535mm
6-2-753939mm
6-2-754747mm
6-2-754848mm
6-2-754949mm
6-2-755555mm
6-2-755656mm
6-2-755858mm
6-2-755959mm
6-2-756060mm
6-2-757070mm
6-2-757575mm
6-2-757878mm
6-2-758080mm
6-2-758181mm
6-2-758787mm
6-2-758888mm
Order No.Diameter
100mm Depth
6-2-1002525mm
6-2-1003232mm
6-2-1004040mm
6-2-1004242mm
6-2-1004343mm
6-2-1005050mm
6-2-1007070mm

Order No.Diameter
110mm Depth
6-2-1102020mm
6-2-1102121mm
6-2-1102424mm
6-2-1103030mm

Order No.Description
Cutter Kits
6-1-0011" depth Cutter Kit
6-1-0022" depth Cutter Kit

Each HSS steel cutter kit comes with the following:

9/16", 11/16", 13/16", 15/16", 1-1/16", pilot pin & carrying case.

Order No.Description
Pilot Pins for 6-Series
 For 3/4" Shanks
7-3-1027/16" - 3" dia., 1" depth
7-3-2027/16" - 3" dia., 2" depth
7-3-3023/4" - 3" dia., 3" depth
 For 1-1/4" Shanks
7-3-10023-1/16" - 5-1/8" dia., 1" depth
7-3-20023-1/16" - 5-1/8" dia., 2" depth
7-3-30023-1/16" - 5-1/8" dia., 3" depth
Option for Cutters 3" and 4" Depth
2-piece pin for 6 series
7-3-4022-piece pin for 3" and 4" depth cutters with 8mm pilot hole.
Option for Cutters 6" and 8" Depth
9-3-602 CPin for 6" depth cutters with 8mm pilot hole
9-3-802 CPin for 8" depth cutters with 8mm pilot hole

Core Drill SeriesMaterials
Lubrication / Cooling LubricantAluminum/

Nonferrous Metals
Steel <500 N/m²Fine-grain steel

< 700 N/m²
Fine-grain steel

< 1000 N/m²
Stainless Steel InoxCasting
 
Standard HSS25 - 30 m/min25 m/min   10 - 20 m/min
Lubricant oil X    
Grease spray X    
Grease paste      
Special lubricantX     
 
ARMOR-PLATED 10- 15 m/min10- 15 m/min10- 15 m/min  
Lubricant oil XXX  
Grease spray XXX  
Grease paste  XX  
Special Lubricant  XX  
       
TCT HORNET 35 m/min25 m/min20 m/min VCE20 m/min VCE 
Cooling lubricant XXXX 
Drilling emulsion XXXX 

VCE = Full wave control electronics

Cutting speed: (d x π x n) / 1000 = m/min.

Speed: n = (v x 1000) / (d x π) = min-1




Unibroach® Stack Cutters are available in diameters from 9/16" to 1-1/8" in 1", 2" and 3" depths. Drill multiple layers of steel without stopping to remove the center slug. Please contact us for more information.

** We also stock 4" depth HSS cutters and Metric HSS cutters. Larger diameters and special sizes available upon request. Please contact us for pricing and delivery.