--- --- APWorkshop.com.au STRAIGHT BITS ROUGHING For increased feed rates to give fast routing of hard materials. Part # Description A inch A mm B inch B mm C inch C mm A$ TSRR 8 ROUGHING SPIRAL 1/4 1/4 1/4 6.35 3/4 19.05 2-1/2 63.5 84.70 TSRR 8 M ROUGHING SPIRAL 8 mm 8 mm 0.315 8 0.984 25 2.52 64 107.80 TSRR 12 3/8 ROUGHING SPIRAL 3/8 3/8 inch (9.53 mm) 3/8 9.53 1-1/4 31.75 2-1/2 63.5 107.80 TSRR 10 M ROUGHING SPIRAL 10 mm 10 mm (0.394 inch) 0.394 10 0.984 25 2.87 73 112.50 TSRR 12 M ROUGHING SPIRAL 12 mm 12 mm (0.472 inch) 0.472 12 1.26 32 2.91 74 129.00 TSRR 16 1/2 ROUGHING SPIRAL 1/2 1/2 inch (12.7 mm) 1/2 12.7 1-1/4 31.8 3 76.2 135.40 TSRR 16 M ROUGHING SPIRAL 16 mm 16 mm (0.630 inch) 0.630 16 1.378 35 2.95 75 168.20 TSRR 20 M ROUGHING SPIRAL 20 mm 20 mm (0.787 inch) 0.787 20 1.575 40 3.94 100 261.50 M= Metric Size, H= High Speed Steel, T= Carbide Tipped or Solid Carbide, A= Carbide Tipped on Nose (Pilot Panel Bits) B= Ball Bearing Guide, E/C = End Cutting, S = Single Flute, X= Long series bits not warrantied against breakage, XX= Extra long series bits not warrantied against breakage. Where bits are available in various arbor/shank diameters, suffix indicates: 5/16, 3/8, 1/2 inch, 10 mm (otherwise 1/4 inch). In diagrams, A= Cutting Width, B= Flute Length, C= Overall Length (includes bearing and screw), R, R1 or R2 = Radius of Cut, E= Pilot or Bearing Width, G= Depth of Cut, Bevel = Bevel, ID= Inside Diameter, T= Wood Thickness. ![]()
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Router Bits
by

SPIRAL BITS
UP CUT ![]()

SOLID CARBIDE, THREE FLUTES
Shank: see the table below. 
(6.35 mm)
(0.315 inch)