

Rotary Torque Units - RTU
Designed to be used
in-line to limit torque for both manual and power-driven applications.
CH models are suitable for chuck adaptation.
Repeatability within +/- 6% of pre-set torque value.
Reliable radial torque mechanism.
The mechanism slips free when the pre-set torque value is reached, eliminating overtightening. The mechanism then automatically resets.
Pre-set using a torque analyzer.
Robust construction with corrosion-free finish.
Non-length dependent.
For RTU Drawings and for RTU Parts List
WARNING!
Not recommended for impact wrenches or pulse tools.
Model | Item # | lbf.in | S.I. | Max. RPM | Input | Output |
RTU170 | 020584 | 0.9 - 15 | 10 - 170 cN.m | 500 | 1/4 M/Hex | 1/4 F/Hex |
RTU170 | 020345 | 0.9 - 15 | 10 - 170 cN.m | 500 | 3/8 F/Sq | 3/8 M/Sq |
RTU170CH | 020346 | 0.9 - 15 | 10 - 170 cN.m | 500 | 1/2 M/Hex | 3/8 x 24 UNF Thread |
RTU450 | 020585 | 9 - 40 | 1 - 4.5 N.m | 500 | 1/4 M/Hex | 1/4 F/Hex |
RTU450 | 020347 | 9 - 40 | 1 - 4.5 N.m | 500 | 3/8 F/Sq | 3/8 M/Sq |
RTU450CH | 020348 | 9 - 40 | 1 - 4.5 N.m | 500 | 1/2 M/Hex | 3/8 x 24 UNF Thread |
RTU1000 | 020586 | 36 - 88 | 4 - 10 N.m | 250 | 1/4 M/Hex | 1/4 F/Hex |
RTU1000 | 020349 | 36 - 88 | 4 - 10 N.m | 250 | 3/8 F/Sq | 3/8 M/Sq |
RTU1000CH | 020350 | 36 - 88 | 4 - 10 N.m | 250 | 1/2 M/Hex | 3/8 x 24 UNF Thread |
Torque Ranges


Model | Item# | Torque | Freewheel | Weight |
FWA-R |
20-A8842R | Clockwise | Counter Clockwise | 2.4 oz. |
FWA-L | 20-A8842L | Counter Clockwise | Clockwise | 2.4 oz. |
Freewheel Adapters
Transmit torque in one direction and "freewheel" in the reverse direction.
The "one way" feature is achieved using a roller clutch which provides minimal backlash and drag.
Provided with a 1/4" male hex on one end and 1/4" female hex on the other.
Easily adapts to Ergo Mirco Torque, Micro Torque, PSE and TLS screwdrivers.
Absorbs unwanted shock loads.
1/4" Male Square Drive Adapter
Adapter can be used with any 1/4 Female Hex Screwdriver to convert it into a 1/4 Male Square Drive screwdriver.
Item # 020175


Magnetizer / Demagnetizer

Ergonomic Grips
Fits TLS screwdriver models: Minors and Standards.
Molded from clear PVC.
Custom shaped to match screwdriver
Provides softer, semi-cushioned feel for the operator.
Transparent PVC enables the screwdriver label, serial number and handle color to be clearly visible and readable through the grip.
Labels with preset and recalibration dates marked on the driver handle are protected.
Easily fitted using special P80 temporary lubricating emulsion (silicon free). When fitted, lubricant dries giving long-term grip even in moist conditions.
Model: TLS Minor Screwdriver
Weight: 15 grams
Item: # 20-P19030
Model: TLS Standard Screwdriver
Weight: 24 grams
Item: # 20-P19040
Magnetize or demagnetize bits and parts instantly.
Item # 120815
Model: P.80 Lubricant
(100mL)
Item #20-A90220

