13-500

Helix Mortise Bit w/ Downshear

1/2"CD, 5/8"CL

Product Information

These Mortise heads are designed to screw down onto a Helix Mortise Arbor (Part #HMA-1/4 or #HMA-1/2) for easy transition from one cutting head to the next. The Mortise head is only available with a downshear cutter.

Part # Fractional Dia. Decimal Dia. Cutting Length Overall Length
  13-500 1/2" .500" 5/8" 7/8"
  13-515 33/64" .515" 5/8" 7/8"
  13-531 17/32" .531" 5/8" 7/8"
  13-562 9/16" .562" 5/8" 7/8"
  13-625 5/8" .625" 5/8" 7/8"
  13-640 41/64" .640" 5/8" 7/8"
  13-656 21/32" .656" 5/8" 7/8"
  13-687 11/16" .687" 5/8" 7/8"
  13-719 23/32" .719" 5/8" 7/8"
  13-750 3/4" .750" 5/8" 7/8"
  13-765 49/64" .765" 5/8" 7/8"
  13-781 25/32" .781" 5/8" 7/8"
  13-812 13/16" .812" 5/8" 7/8"
  13-875 7/8" .875" 5/8" 7/8"
  13-937 15/16" .937" 5/8" 7/8"
  13-1000 1" 1" 1/2" 1/2"
  13-1125 1-1/8" 1.125" 1/2" 1/2"
  13-1250 1-1/4" 1.25" 1/2" 1/2"
13-1250A 1-1/4" 1.25" 1/2" 1/2"

* 13-1250A supplied with 5/16"-24 threads. All others supplied with 1/4"-28 threads. Special cutting diameters available by special order.

Helix Mortise Arbors

Part # Shank Dia. Thread Overall Length
  HMA-1/4 1/4" 1-4"-28 1-3/4"
  HMA-1/2 1/2" 1/4"-28 1-3/4"
HMA-1/4A 1/4" 5/16"-24 1-3/4"
HMA-1/2A 1/2" 5/16"-24 1-3/4"

* Fits #13-1250A only.