Explore New Videos on Instagram #sharstoolco


More Information
Mfg SKU #202-5519
Collet CategoryER Collets
BrandShars Tool
collet seriesER16
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 ER16 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".