Collets and Sleeves ER16 Single-Angle Tension Tap Collets • Tension feature for applications that need synchronized tapping. • Adjustable screws in back of collet act as a drive for the tap square. • Can be used in all standard ER collet chucks. • Available in inch sizes. ER T-Only Tap Collet • Inch/Metric ANSI ER12 ER16 ER20 ER25 ER32 ER40 tap size D2 = 11,4mm D2 = 17mm D2 = 21mm D2 = 26mm D2 = 33mm D2 = 41mm D1 mm in L = 21,5mm L = 27,5mm L = 31,5mm L = 34mm L = 40mm L = 46mm mm in M3 & M3,15 & M3,5 #0-#6 & 1/8 12ERTCT6 16ERTCT6 20ERTCT6 25ERTCT6 — — 3,58 .141 M4 #8 & 5/32 — 16ERTCT8 20ERTCT8 25ERTCT8 32ERTCT8 — 4,27 .168 M4,5 & M5 #10 & 3/16 — 16ERTCT10 20ERTCT10 25ERTCT10 32ERTCT10 — 4,93 .194 — #12 & 7/32 — — 20ERTCT12 25ERTCT12 32ERTCT12 — 5,59 .220 M6 & M6,3 #14 & 1/4 — — 20ERTCT025 25ERTCT025 32ERTCT025 40ERTCT025 6,48 .255 — 1/8P(LS) — — — — 32ERTCT012P — 7,94 .313 M7 & M8 5/16 — — — 25ERTCT031 32ERTCT031 40ERTCT031 8,08 .318 — 7/16 — — — 25ERTCT043 32ERTCT043 40ERTCT043 8,20 .323 M12 & M12,5 1/2 — — — 25ERTCT050 32ERTCT050 40ERTCT050 9,32 .367 M10 3/8 — — — 25ERTCT037 32ERTCT037 40ERTCT037 9,68 .381 M14 9/16 — — — — 32ERTCT056 40ERTCT056 10,90 .429 M16 5/8 — — — — 32ERTCT062 40ERTCT062 12,19 .480 M18 11/16 — — — — — 40ERTCT069 13,77 .542 — 3/4 — — — — — 40ERTCT075 14,99 .590 M20 13/16 — — — — — 40ERTCT081 16,56 .652 M22 7/8 — — — — — 40ERTCT087 17,70 .697 NOTE: 12ERTCT6 fits ER11 chucks. Full length of the gripping bore must be maintained to achieve maximum accuracy and safety. I60 WWW.WIDIA.COM Collets and Sleeves