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Clean Room Torque Screwdriver


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With the growing trend of clean room manufacturing, the need for torque tools that meet stringent cleanliness requirements has increased. Responding to this manufacturing need, Mountz offers clean room torque screwdrivers. Clean Room screwdriver is a preset torque limiting screwdriver (internally adjustable). The cam-over design prevents overtorquing for your application.

Designed and manufactured to meet or exceed the accuracy and repeatability requirements of ISO 6789: 2003 (+/- 6% of setting).

  • Exceeds Class 100 clean room standards.
  • Special seals prevent contamination.
  • External components are high-grade stainless steel to inhibit any form of corrosion.
  • Special microfiltered internal lubricant.
  • Aluminum handle sealed with PTFE impregnated anodized finish.
  • Tamper-proof internal adjustment. No external adjustment scale - must be preset using a torque analyzer.

Torque Ranges

Model Item # American S.I. Metric Wt. Drive
CRS100-0022FH 020320  5.7 - 32 ozf.in   4 - 22 cN.m 0.4 - 2.2 kgf.cm 2.5 oz 1/4" F/Hex
CRS100-0135FH 020321  1.2 - 12 lbf.in  14 - 135 cN.m 1.4 - 13.7 kgf.cm 7.4 oz. 1/4" F/Hex
CRS100-0406FH 020322  4.4 - 36 lbf.in  50 - 406 cN.m 5.1 - 41 kgf.cm 9.9 oz. 1/4" F/Hex
CRS100-1360FH 020498  22 - 120 lbf.in  2.5 - 13.6 N.m 25.3 - 138 kgf.cm 11.5 oz. 1/4" F/Hex
IFR CRS100-00135FH 020483  1.2 - 12 lbf.in  14 - 135 cN.m 1.4 - 13.7 kgf.cm 7.4 oz. 1/4" F/Hex
IFR CRS100-0406FH 020484 4.4 - 36 lbf.in  50 - 406 cN.m 5.1 - 41 kgf.cm 9.9 oz. 1/4" F/Hex
Dimensions

 

Blog ArticleClean Room Manufacturing & Assembly with Clean Room Torque Screwdrivers

IFR CRS Models (Impact Free Resetting)
The design action of the standard CRS cammed screwdrivers is such that when the tool reaches its pre-set torque value the mechanism disengages from the drive thus limiting the torque applied. Further rotation of the screwdriver handle resets the mechanism ready for the next torquing operation. The IFR models eliminates any small reaction during resetting.

 

 

Clean Room Standards

Clean Room Standards
According to the United States specification FED-STD-209D, Classes of cleanliness are defined by the number of particles per cubic foot. Particle sizes shown in the following table.

Measured Particles Size (Microns)

Class 0.1   0.2   0.3   0.5   5.0
1 35   7.5   3   1   -
10 350   75   30   10   -
100 -   750   300   100   -
1,00 -   -   -   1,000   7
10,000 -   -   -   10,000   70
100,00 -   -   -   100,00   700