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Metal working processes that are generally carried out with machine tools or multi-tool machining centers.

RIDGID Model 535A Automatic Threading Machine

Product Announcement from RIDGID®

RIDGID Model 535A Automatic Threading Machine -Image

The RIDGID® Model 535A Automatic Threading Machine maintains the ruggedness of the industry workhorse while adding features that make the threading operation more productive.

A large chip tray and oil reservoir make the 535A ideal for longer uninterrupted threading. The 535 features a high clearance carriage that makes the threading operation easier and a generous top cover area that is ideal for keeping tools and work related materials handy. The 535A is designed around maximum up time with the upgrades that matter most to the pipe working professional. Users also benefit from the part commonality between the 535, the 535A Automatic and other RIDGID equipment.


  • Automatic chuck. 3-speed (16/46/58 RPM) transmission.
  • Large 1.75 gallon oil reservoir.
  • 100% greater chip tray capacity.
  • Generous top cover area for keeping tools and fittings handy.
  • High clearance carriage.
  • Can be used with geared threader Model 141. U
  • ses Model 816/817 semi-automatic, Model 815A self opening or Model 811A quick-opening die heads.
  • Length gauge for quick, accurate cut-off.
  • Approved by CSA to CSA and UL Standards


Pipe Capacity: 1/8"-2" (3mm-50mm) 2 1/2"-4" (62mm-100mm) with 141 geared threader.

Bolt Capacity: 5/16"-2" (8mm-50mm).

Motor: 2 HP, single-phase, 115V, 60 Hz, 20 Amp reversible induction motor.

Switches: FOR/OFF/REV and Integral safety foot switch.

Chuck: automatic with four reversible forged jaws.

Rear Centering Device: automatic, centering only.

Cutters: self-centering, full-floating. Two models available: - One Standard. No. 820 Wheel-Type Cutter, pipe capacity 1/8"-2" (3mm-50mm), bolt capacity 1/4"-1" (6mm-25mm). - Two Optional. No. 821 Blade-Type cutter, pipe capacity 1/2"-2" (12mm-50mm). See ordering chart.

Spindle Speed: 3 speed 16/46/58 RPM.

Reamer: 5-flute cone, RH, 1/8"-2" (3mm-50mm).

Oil Pump: self-priming gerotor oil pump.

RH/LH combination reamer available.

Note: Mono Die Heads available, 1/8", 1/4", 3/8", 1/2", 3/4", 1", 1 1/4", 1 1/2", 2". All Die Heads are through-head oiling.

Dies: All Universal Pipe and Bolt Dies; all 500B Bolt Dies.

Standard Equipment:

  • 17-gauge steel walls and welded construction.
  • Two internal and one external storage shelves.
  • Oversized bi-fold door with steel clasp.
  • Cut-outs for power cord and foot switch storage.
  • Two drain plugs for easy cleaning.
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