ER11 Collets

ER11 collets in 13 metric sizes from 0.5 to 7 mm and 8 inch sizes from 1/16" to 9/32", plus 9 DNA 11 collets and two ER11 collet sets (7-piece inch, 13-piece metric). An ER11 collet is 18 mm (.708") long with an 11.5 mm (.45") outside diameter.

Metric collets are named by the shank range they hold, for example ER11 3-3.5mm, and inch collets by the shank size. Our ER collets are made from high-carbon bearing steel, ground and heat treated, and hand inspected, with runout (T.I.R.) averaging 0.0002". Use them with a PowerCOAT nut for the best holding power and cutting tool life.

DNA 11 collets are DNA (Dead Nuts Accurate) collets for small tools. They hold the shank with more rigidity and accuracy than a standard ER collet, with 0.0002" runout, and they fit your ER11 holders. Three are exact-size collets for 1/8", 3/16" and 1/4" shanks.

ER11 collets fit the ER11 holders on ISO Collet Chucks (ISO30) and Straight Shank Collet Chucks & Extensions. ER11 high-speed hex and mini nuts are on Collet Nuts. All ER sizes and collet sets: Collets.