torque rangesmodel 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
blog article -
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.
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