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3/8" ER40 Collet

Online Price Only: $12.72 Regular Price: $16.90
In stock

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More Information
Mfg SKU #202-5576
Collet CategoryER Collets
BrandShars Tool
collet seriesER40
collet size3/8
collet size range.3356-.3750
TIR (inch)0.0003


  • Made from alloy spring steel and hardened to HRC 44-48
  • All fractional size is true imperial size, not a metric conversion size
  • All collets are checked its runout individually on 4 contact points by a high tolerance bench marked testing rod
  • On size 1/8" and larger the runout is .0003"; under size 1/8 the runout is .00059"
  • Each size of ER40 collet has collapsing range of .0394" (1 mm); the size of the collet is the largest size it can hold and able to hold anything smaller within the collapsing range
  • Conform to DIN6499B
This collet size is true fractional size, not a metric converting size and the surface on this collet has been specially treated to increase its tool life.  Runout is .0003".