Industrial Tools
Torque Systems

Sturtevant Richmont M series

Capacity 110 cNm // 1 / 2.5 / 5 / 12 / 22 / 34 / 70 / 140 / 210 / 410 Nm

Direct Reading Flat Beam Memory Wrench

The SR line of 'Flat Beam' torque wrenches is the direct descendant of those produced by P. A. Sturtevant in the 1930's, and is still among the most accurate and durable of all torque wrenches on the market! The four most important requirements of a torque wrench – accuracy, reliability, durability, low ownership cost – are combined into these exceptional tools. Accuracy is literally ground into the wrench. The service life of these tools is frequently measured in decades!

The special alloy steel beam is ground to a rate of deflection with the use of dead weights, rather than a dimensional tolerance. This process is time consuming and very labor intensive, but the result is a tool that remains accurate as long as the beam is intact and the pointer is on zero under no-load condition.

The flat shape of the beam insures the wrench remains at a right angle to the fastener, reducing or eliminating side-loading error. This unique taper-grinding distributes stress evenly along the entire length of the beam, extending tool life indefinitely. With a minimum of moving parts, these tools are virtually repair and maintenance free.

These torque wrenches are ideal for aircraft assembly and maintenance operations, fastener testing (in-process/final/receivinging inspection) for prevailing torque nuts, and assembly compliance testing for products with rotating components. For these and similar operations, Flat Beam torque wrenches are often the best tool for the job.

 

Key Features

  • Incredibly durable design, with a service life frequently measured in decades!
  • Very low cost of ownership - exceptional accuracy retention permits extended calibration intervals, and they are virtually maintenance and repair free!
  • Ideal for prevailing-torque and destructive testing applications!
  • Low mass/low inertia design of pointers helps eliminate reading distortion.
  • Memory feature consists of fingers that follow a track in the scale and remain in place to indicate the maximum torque achieved.
  • Pivoted handles concentrate the applied load (force) at a precise point on the lever to assure torque accuracy.
  • The SR flat beam torque wrenches meet or exceed all requirements of ASME B107.14M and ISO 6789.
  • Accuracy of SR flat beams is ± 2% of Indicated Value from 20% to 100% of wrench capacity in both directions.
  • FREE included with each wrench!

 

Shipping List

  • Torque wrench M
  • NIST-traceable tabulated certification
  • Operating instructions
M Series Flat Beam (SI)
Model Item No. Torque Range*
cN·m
Torque Range*
N·m
Graduation
cN·m
Graduation
N·m
Sq.drv
inch
Handle
shape
Lever Length
mm
Weight
kg
M-110 cNm R855276 110 5 1/4 B 152 0.113
M-1 Nm R855280 1 0.05 1/4 B 152 0.113
M-2.5 Nm R855281 2.5 0.1 3/8 B 159 0.156
M-5 Nm R855282 5.0 0.2 3/8 B 152 0.156
M-12 Nm R855283 12 0.5 3/8 B 165 0.170
M-22 Nm R855284 22 1 3/8 H 229 0.227
M-34 Nm R855285 34 1 3/8 H 343 1.247
M-70 Nm R855287 70 2 3/8 H 343 1.247
M-70 Nm R855288 70 2 1/2 H 343 1.247
M-140 Nm R855289 140 5 1/2 H 381 1.247
M-210 Nm R855290 210 10 1/2 H 457 1.701
M-410 Nm R855292 410 10 3/4 H 762 4.876
M Series Flat Beam (Imperial)
Model Item No. Torque Range*
ozf·in
Torque Range*
lbf·in
Torque Range*
lbf·ft
Graduation
ozf·in
Graduation
lbf·in
Graduation
lbf·ft
Sq.drv
Inch
Handle
shape
Lever Length
mm
Weight
kg
M-32 IO R850233 32 2 1/4 B 152 0.099
M-80 IO R850254 80 5 1/4 B 155 0.113
M-160 IO R850202 160 10 1/4 B 152 0.113
M-10 I R850188 10 0.5 1/4 B 152 0.156
M-25 I R850222 25 1 3/8 B 159 0.170
M-50 I R850242 50 2 3/8 B 152 0.170
M-100 I R850191 100 5 3/8 B 165 0.170
M-200 I R850211 200 10 3/8 B 229 0.227
M-300 I R850228 300 10 3/8 H 343 1.247
M-600 I R850246 600 25 3/8 H 343 1.247
M-600 I R850247 600 25 1/2 H 343 1.247
M-1200 I R850195 1200 50 1/2 H 381 1.247
M-1800 I R850205 1800 50 1/2 H 457 1.247
M-25 R850220 25 1 3/8 H 343 1.247
M-50 R850240 50 2 3/8 H 343 1.247
M-50 R850241 50 2 1/2 H 343 1.247
M-100 R850190 100 5 1/2 H 381 1.247
M-150 R850198 150 5 1/2 H 457 1.701
M-300 R850227 300 10 3/4 H 762 4.876
* The requirements and testing methods of the DIN EN ISO 6789 are valid for the rated output (capacity) for a measuring range from 20% to 100%. The effective range is to the respective rated output with approximately 10 - 120%.

Handle shape "B" = ball, shape "H" = handle.

All specifications without guarantee, errors and omissions excepted.

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