Industrial Tools
Torque Systems

Sturtevant Richmont SD

Capacity up to 800 Nm (see chart)

Micrometer Adjustable Clicker Torque Wrench with Fixed Square Drive


When rapid adjustment and minimal fastener rotation are the need, these are the answer. Micrometer Adjustable Fixed Square Drive torque wrenches are ideal for any application where:


  • The fastener or fitting to be tightened can be engaged with a socket,
  • The user changes from one torque to another often,
  • A low amount of rotation does not require ratcheting to achieve the desired torque,
  • The ability to select the torque and lock it in rapidly is needed,
  • Simplicity of operation is needed,
  • Very high durability is needed.


These needs are common in small quantity assembly operations and many maintenance functions; the SD-Series tools are superb for these types of applications.


A simple thumbscrew mechanism locks handle to avoid unintended changing of torque setting. The strong dimensioned torque spring is the very heart of this clicker wrench. With reaching the pre-set torque, the torque spring is squeezed slightly, and the hardwearing pawl is releasing the tool tang. An excellent tactile and audible impulse signals that the pre-set torque is achieved. The well-proven neoprene rubber grip offers oil and chemical resistance, as well as cushioning and firm grip for good ergonomics.


  • Equipped with upmarket knurled metal grip (MG).
  • Improved lock mechanism.
  • Option: Konversion Kit from vintage neoprene grip to knurl grip available on request.


Key Features


  • Accuracy ± 4% of indicated value (within 20-100% of capacity).
  • Meets or exceeds ASME B107.300-2010 and EN ISO 6789.
  • Exeptional wear-resistant fixed square drive.
  • Thick-walled housing profile provides high long-term stability.
  • Fast adjustment – takes the fewest grip rotations of any tool to reach full scale.
  • Strong audible and tactile impulse when the set torque is achieved.
  • Includes FREE certification from SR's ISO/IEC 17025 Accredited Calibration Laboratory.
  • Aluminum increment band is colour-coded: black for inch-pounds, gold for foot-pounds and blue for Newton-meter.




  • Old version with neoprene handle optionally convertible to metal handle.


NATO approval (NSN)


  • 2SD50I = 5120-01-394-4274
  • 2SD150I = 5120-01-394-4277
  • 2SD200I = 5120-01-394-4276
  • 3SD150I = 5120-01-394-4275
  • 3SD200I = 5120-01-394-4278
  • 3SD750I = 5120-01-394-4279
  • 3SD1200I = 5120-01-394-4282
  • 4SD1800I = 5120-01-394-4280

  • 4SD150 = 5120-01-394-4281
SD – Newton Meter
Model Item No. Torque Range N·m Graduation N·m Sq Drv Inch Weight kg Length mm
3 SD 60 NM (Neopren) R810180 12 - 60 0.5 3/8 0.5 270
6 SD 800 NM (Alu) R810601 160 - 800 5 3/4 3.9 993
SD – Inch Pounds
Model Item No. Torque Range lbf·in Graduation lbf·in Sq Drv Inch Weight kg Length mm
2 SD 50 I MG R869160 10 - 50 1 1/4 0.5 271
2 SD 150 I MG R869161 30 - 150 2 1/4 0.5 271
3 SD 200 I MG R869159 40 - 200 2 3/8 0.6 269
3 SD 750 I MG R869163 150 - 750 5 3/8 0.6 362
SD – Foot Pounds
Model Item No. Torque Range lbf·ft Graduation lbf·ft Sq Drv Inch Weight kg Length mm
4 SD 150 MG R869167 30 - 150 1 1/2 0.9 450
6 SD 600 R810600 120 - 600 5 3/4 3.9 899

The requirements and verification procederes of the DIN EN ISO 6789 are valid for a measuring range from 20% to 100% of the rated capacity (maximum value). The effective span of a torque tool may differently begin lower.

All specifications without guarantee, errors and omissions excepted.


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