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ER Collets

  • ACCU-FIX Precision Collets are as per DIN 6499-form-B standard and ISO 15488.
  • HIGH-Precision Collets accuracy is as per calss - 1 Din 6499 & ISO 15488 standard
  • Manufactured with SWISS Technology
  • Crafted from high quality European sping steel
  • METRIC & INCH sizes
  • Fractional Collets manufactured specifically for USA market requirements
  • 16 slot construction for rigid clamping and extra concentricity
  • Can be used for drilling, milling, tapping and reaming
  • Hardness: 44-46 HRC
  • Tolerances of taper: AT3
  • Ultra Precision Collets are also available
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Collets Series A B
ER 8 8.5mm (.335 in) 13.5mm (.531 in)
ER 11 11.5mm (.453 in) 18mm (.709 in)
ER 16 17mm (.669 in) 27mm (1.063 in)
ER 20 21mm (.827 in) 31mm (1.220 in)
ER 25 26mm (1.024 in) 35mm (1.378 in)
ER 32 33mm (1.299 in) 40mm (1.575 in)
ER 40 41mm (1.614 in) 46mm (1.811 in)
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ER 8
Inch Size MM Size Dec. mm Standard Precision
  1.0 1.00 ER8-0100-1.0mm
  1.5 1.50 ER8-0150-1.5mm
1/16   1.59 ER8-0159-1/16
5/64   1.98 ER8-0198-5/64
  2.0 2.00 ER8-0200-2.0mm
3/32   2.38 ER8-0238-3/32
  2.5 2.50 ER8-0250-2.5mm
7/64   2.78 ER8-0278-7/64
  3.0 3.00 ER8-0300-3.0mm
1/8   3.18 ER8-0318-1/8
  3.5 3.50 ER8-0350-3.5mm
9/64   3.57 ER8-0357-9/64
5/32   3.97 ER8-0397-5/32
  4.0 4.00 ER8-0400-4.0mm
11/64   4.37 ER8-0437-11/64
  4.5 4.50 ER8-0450-4.5mm
3/16   4.76 ER8-0476-3/16
  5.0 5.00 ER8-0500-5.0mm
ER 11
Inch Size MM Size Dec. mm Standard Precision
  1.0 1.00 ER11-0100-1.0mm
  1.5 1.50 ER11-0150-1.5mm
1/16   1.59 ER11-0159-1/16
5/64   1.98 ER11-0198-5/64
  2.0 2.00 ER11-0200-2.0mm
3/32   2.38 ER11-0238-3/32
  2.5 2.50 ER11-0250-2.5mm
7/64   2.78 ER11-0278-7/64
  3.0 3.00 ER11-0300-3.0mm
1/8   3.18 ER11-0318-1/8
  3.5 3.50 ER11-0350-3.5mm
9/64   3.57 ER11-0357-9/64
5/32   3.97 ER11-0397-5/32
  4.0 4.00 ER11-0400-4.0mm
11/64   4.37 ER11-0437-11/64
  4.5 4.50 ER11-0450-4.5mm
3/16   4.76 ER11-0476-3/16
  5.0 5.00 ER11-0500-5.0mm
13/64   5.16 ER11-0516-13/64
  5.5 5.50 ER11-0550-5.5mm
7/32   5.56 ER11-0556-7/32
15/64   5.95 ER11-0595-15/64
  6.0 6.00 ER11-0600-6.0mm
1/4   6.35 ER11-0635-1/4
  6.5 6.50 ER11-0650-6.5mm
17/64   6.75 ER11-0675-17/64
  7.0 7.00 ER11-0700-7.0mm
ER 16
Inch Size MM Size Dec. mm Standard Precision
  1.0 1.00 ER16-0100-1.0mm
  1.5 1.50 ER16-0150-1.5mm
1/16   1.59 ER16-0159-1/16
5/64   1.98 ER16-0198-5/64
  2.0 2.00 ER16-0200-2.0mm
3/32   2.38 ER16-0238-3/32
  2.5 2.50 ER16-0250-2.5mm
7/64   2.78 ER16-0278-7/64
  3.0 3.00 ER16-0300-3.0mm
1/8   3.18 ER16-0318-1/8
  3.5 3.50 ER16-0350-3.5mm
9/64   3.57 ER16-0357-9/64
5/32   3.97 ER16-0397-5/32
  4.0 4.00 ER16-0400-4.0mm
11/64   4.37 ER16-0437-11/64
  4.5 4.50 ER16-0450-4.5mm
3/16   4.76 ER16-0476-3/16
  5.0 5.00 ER16-0500-5.0mm
13/64   5.16 ER16-0516-13/64
  5.5 5.50 ER16-0550-5.5mm
7/32   5.56 ER16-0556-7/32
15/64   5.95 ER16-0595-15/64
  6.0 6.00 ER16-0600-6.0mm
1/4   6.35 ER16-0635-1/4
  6.5 6.50 ER16-0650-6.5mm
17/64   6.75 ER16-0675-17/64
  7.0 7.00 ER16-0700-7.0mm
9/32   7.14 ER16-0714-9/32
  7.5 7.50 ER16-0750-7.5mm
19/64   7.54 ER16-0754-19/64
5/16   7.94 ER16-0794-5/16
  8.0 8.00 ER16-0800-8.0mm
21/64   8.33 ER16-0833-21/64
  8.5 8.50 ER16-0850-8.5mm
11/32   8.73 ER16-0873-11/32
  9.0 9.00 ER16-0900-9.0mm
23/64   9.13 ER16-0913-23/64
  9.5 9.50 ER16-0950-9.5mm
3/8   9.53 ER16-0953-3/8
25/64   9.92 ER16-0992-25/64
  10.0 10.00 ER16-1000-10.0mm
ER 20
Inch Size MM Size Dec. mm Standard Precision
1/16   1.59 ER20-0159-1/16
5/64   1.98 ER20-0198-5/64
  2.0 2.00 ER20-0200-2.0mm
3/32   2.38 ER20-0238-3/32
  2.5 2.50 ER20-0250-2.5mm
7/64   2.78 ER20-0278-7/64
  3.0 3.00 ER20-0300-3.0mm
1/8   3.18 ER20-0318-1/8
  3.5 3.50 ER20-0350-3.5mm
9/64   3.57 ER20-0357-9/64
5/32   3.97 ER20-0397-5/32
  4.0 4.00 ER20-0400-4.0mm
11/64   4.37 ER20-0437-11/64
  4.5 4.50 ER20-0450-4.5mm
3/16   4.76 ER20-0476-3/16
  5.0 5.00 ER20-0500-5.0mm
13/64   5.16 ER20-0516-13/64
  5.5 5.50 ER20-0550-5.5mm
7/32   5.56 ER20-0556-7/32
15/64   5.95 ER20-0595-15/64
  6.0 6.00 ER20-0600-6.0mm
1/4   6.35 ER20-0635-1/4
  6.5 6.50 ER20-0650-6.5mm
17/64   6.75 ER20-0675-17/64
  7.0 7.00 ER20-0700-7.0mm
9/32   7.14 ER20-0714-9/32
  7.5 7.50 ER20-0750-7.5mm
19/64   7.54 ER20-0754-19/64
5/16   7.94 ER20-0794-5/16
  8.0 8.00 ER20-0800-8.0mm
21/64   8.33 ER20-0833-21/64
  8.5 8.50 ER20-0850-8.5mm
11/32   8.73 ER20-0873-11/32
  9.0 9.00 ER20-0900-9.0mm
23/64   9.13 ER20-0913-23/64
  9.5 9.50 ER20-0950-9.5mm
3/8   9.53 ER20-0953-3/8
25/64   9.92 ER20-0992-25/64
  10.0 10.00 ER20-1000-10.0mm
13/32   10.32 ER20-1020-13/32
  10.5 10.50 ER20-1050-10.5mm
27/64   10.72 ER20-1072-27/64
  11.0 11.00 ER20-1100-11.0mm
7/16   11.11 ER20-1111-7/16
  11.5 11.50 ER20-1150-11.5mm
29/64   11.51 ER20-1151-29/64
1/16   1.59 ER20-1159-1/16
15/32   11.91 ER20-1191-15/32
  12.0 12.00 ER20-1200-12.0mm
31/64   12.30 ER20-1230-31/64
  12.5 12.50 ER20-1250-12.5mm
1/2   12.70 ER20-1270-1/2
  13.0 13.00 ER20-1300-13.0mm
ER 25
Inch Size MM Size Dec. mm Standard Precision
  2.0 2.00 ER25-0200-2.0mm
3/32   2.38 ER25-0238-3/32
  2.5 2.50 ER25-0250-2.5mm
7/64   2.78 ER25-0278-7/64
  3.0 3.00 ER25-0300-3.0mm
1/8   3.18 ER25-0318-1/8
  3.5 3.50 ER25-0350-3.5mm
9/64   3.57 ER25-0357-9/64
5/32   3.97 ER25-0397-5/32
  4.0 4.00 ER25-0400-4.0mm
11/64   4.37 ER25-0437-11/64
  4.5 4.50 ER25-0450-4.5mm
3/16   4.76 ER25-0476-3/16
  5.0 5.00 ER25-0500-5.0mm
13/64   5.16 ER25-0516-13/64
  5.5 5.50 ER25-0550-5.5mm
7/32   5.56 ER25-0556-7/32
15/64   5.95 ER25-0595-15/64
  6.0 6.00 ER25-0600-6.0mm
1/4   6.35 ER25-0635-1/4
  6.5 6.50 ER25-0650-6.5mm
17/64   6.75 ER25-0675-17/64
  7.0 7.00 ER25-0700-7.0mm
9/32   7.14 ER25-0714-9/32
  7.5 7.50 ER25-0750-7.5mm
19/64   7.54 ER25-0754-19/64
5/16   7.94 ER25-0794-5/16
  8.0 8.00 ER25-0800-8.0mm
21/64   8.33 ER25-0833-21/64
  8.5 8.50 ER25-0850-8.5mm
11/32   8.73 ER25-0873-11/32
  9.0 9.00 ER25-0900-9.0mm
23/64   9.13 ER25-0913-23/64
  9.5 9.50 ER25-0950-9.5mm
3/8   9.53 ER25-0953-3/8
25/64   9.92 ER25-0992-25/64
  10.0 10.00 ER25-1000-10.0mm
13/32   10.32 ER25-1025-13/32
  10.5 10.50 ER25-1050-10.5mm
27/64   10.72 ER25-1072-27/64
  11.0 11.00 ER25-1100-11.0mm
7/16   11.11 ER25-1111-7/16
  11.5 11.50 ER25-1150-11.5mm
29/64   11.51 ER25-1151-29/64
1/16   1.59 ER25-1159-1/16
15/32   11.91 ER25-1191-15/32
  12.0 12.00 ER25-1200-12.0mm
31/64   12.30 ER25-1230-31/64
  12.5 12.50 ER25-1250-12.5mm
1/2   12.70 ER25-1270-1/2
  13.0 13.00 ER25-1300-13.0mm
33/64   13.10 ER25-1310-33/64
17/32   13.49 ER25-1349-17/32
  13.5 13.50 ER25-1350-13.5mm
35/64   13.89 ER25-1389-35/64
  14.0 14.00 ER25-1400-14.0mm
9/16   14.29 ER25-1429-9/16
  14.5 14.50 ER25-1450-14.5mm
37/64   14.68 ER25-1468-37/64
  15.0 15.00 ER25-1500-15.0mm
19/32   15.08 ER25-1508-19/32
39/64   15.48 ER25-1548-39/64
  15.5 15.50 ER25-1550-15.5mm
5/8   15.88 ER25-1588-5/8
  16.0 16.00 ER25-1600-16.0mm
ER 32
Inch Size MM Size Dec. mm Standard Precision
  3.0 3.00 ER32-0300-3.0mm
1/8   3.18 ER32-0318-1/8
  3.5 3.50 ER32-0350-3.5mm
9/64   3.57 ER32-0357-9/64
5/32   3.97 ER32-0397-5/32
  4.0 4.00 ER32-0400-4.0mm
11/64   4.37 ER32-0437-11/64
  4.5 4.50 ER32-0450-4.5mm
3/16   4.76 ER32-0476-3/16
  5.0 5.00 ER32-0500-5.0mm
13/64   5.16 ER32-0516-13/64
  5.5 5.50 ER32-0550-5.5mm
7/32   5.56 ER32-0556-7/32
15/64   5.95 ER32-0595-15/64
  6.0 6.00 ER32-0600-6.0mm
1/4   6.35 ER32-0635-1/4
  6.5 6.50 ER32-0650-6.5mm
17/64   6.75 ER32-0675-17/64
  7.0 7.00 ER32-0700-7.0mm
9/32   7.14 ER32-0714-9/32
  7.5 7.50 ER32-0750-7.5mm
19/64   7.54 ER32-0754-19/64
5/16   7.94 ER32-0794-5/16
  8.0 8.00 ER32-0800-8.0mm
21/64   8.33 ER32-0833-21/64
  8.5 8.50 ER32-0850-8.5mm
11/32   8.73 ER32-0873-11/32
  9.0 9.00 ER32-0900-9.0mm
23/64   9.13 ER32-0913-23/64
  9.5 9.50 ER32-0950-9.5mm
3/8   9.53 ER32-0953-3/8
25/64   9.92 ER32-0992-25/64
  10.0 10.00 ER32-1000-10.0mm
13/32   10.32 ER32-1032-13/32
  10.5 10.50 ER32-1050-10.5mm
27/64   10.72 ER32-1072-27/64
  11.0 11.00 ER32-1100-11.0mm
7/16   11.11 ER32-1111-7/16
  11.5 11.50 ER32-1150-11.5mm
29/64   11.51 ER32-1151-29/64
1/16   1.59 ER32-1159-1/16
15/32   11.91 ER32-1191-15/32
  12.0 12.00 ER32-1200-12.0mm
31/64   12.30 ER32-1230-31/64
  12.5 12.50 ER32-1250-12.5mm
1/2   12.70 ER32-1270-1/2
  13.0 13.00 ER32-1300-13.0mm
33/64   13.10 ER32-1310-33/64
17/32   13.49 ER32-1349-17/32
  13.5 13.50 ER32-1350-13.5mm
35/64   13.89 ER32-1389-35/64
  14.0 14.00 ER32-1400-14.0mm
9/16   14.29 ER32-1429-9/16
  14.5 14.50 ER32-1450-14.5mm
37/64   14.68 ER32-1468-37/64
  15.0 15.00 ER32-1500-15.0mm
19/32   15.08 ER32-1508-19/32
39/64   15.48 ER32-1548-39/64
  15.5 15.50 ER32-1550-15.5mm
5/8   15.88 ER32-1588-5/8
  16.0 16.00 ER32-1600-16.0mm
41/64   16.27 ER32-1627-41/64
  16.5 16.50 ER32-1650-16.5mm
21/32   16.67 ER32-1667-21/32
  17.0 17.00 ER32-1700-17.0mm
43/64   17.07 ER32-1707-43/64
11/16   17.46 ER32-1746-11/16
  17.5 17.50 ER32-1750-17.5mm
45/64   17.86 ER32-1786-45/64
  18.0 18.00 ER32-1800-18.0mm
23/32   18.26 ER32-1826-23/32
  18.5 18.50 ER32-1850-18.5mm
47/64   18.65 ER32-1865-47/64
  19.0 19.00 ER32-1900-19.0mm
3/4   19.05 ER32-1905-3/4
49/64   19.45 ER32-1945-49/64
  19.5 19.50 ER32-1950-19.5mm
25/32   19.84 ER32-1984-25/32
  20.0 20.00 ER32-2000-20.0mm
ER 40
Inch Size MM Size Dec. mm Standard Precision
1/8   3.18 ER40-0318-1/8
  3.5 3.50 ER40-0350-3.5mm
9/64   3.57 ER40-0357-9/64
5/32   3.97 ER40-0397-5/32
  4.0 4.00 ER40-0400-4.0mm
11/64   4.37 ER40-0437-11/64
  4.5 4.50 ER40-0450-4.5mm
3/16   4.76 ER40-0476-3/16
  5.0 5.00 ER40-0500-5.0mm
13/64   5.16 ER40-0516-13/64
  5.5 5.50 ER40-0550-5.5mm
7/32   5.56 ER40-0556-7/32
15/64   5.95 ER40-0595-15/64
  6.0 6.00 ER40-0600-6.0mm
1/4   6.35 ER40-0635-1/4
  6.5 6.50 ER40-0650-6.5mm
17/64   6.75 ER40-0675-17/64
  7.0 7.00 ER40-0700-7.0mm
9/32   7.14 ER40-0714-9/32
  7.5 7.50 ER40-0750-7.5mm
19/64   7.54 ER40-0754-19/64
5/16   7.94 ER40-0794-5/16
  8.0 8.00 ER40-0800-8.0mm
21/64   8.33 ER40-0833-21/64
  8.5 8.50 ER40-0850-8.5mm
11/32   8.73 ER40-0873-11/32
  9.0 9.00 ER40-0900-9.0mm
23/64   9.13 ER40-0913-23/64
  9.5 9.50 ER40-0950-9.5mm
3/8   9.53 ER40-0953-3/8
25/64   9.92 ER40-0992-25/64
  10.0 10.00 ER40-1000-10.0mm
13/32   10.32 ER40-10ER40-13/32
  10.5 10.50 ER40-1050-10.5mm
27/64   10.72 ER40-1072-27/64
  11.0 11.00 ER40-1100-11.0mm
7/16   11.11 ER40-1111-7/16
  11.5 11.50 ER40-1150-11.5mm
29/64   11.51 ER40-1151-29/64
1/16   1.59 ER40-1159-1/16
15/32   11.91 ER40-1191-15/32
  12.0 12.00 ER40-1200-12.0mm
31/64   12.30 ER40-1230-31/64
  12.5 12.50 ER40-1250-12.5mm
1/2   12.70 ER40-1270-1/2
  13.0 13.00 ER40-1300-13.0mm
33/64   13.10 ER40-1310-33/64
17/32   13.49 ER40-1349-17/32
  13.5 13.50 ER40-1350-13.5mm
35/64   13.89 ER40-1389-35/64
  14.0 14.00 ER40-1400-14.0mm
9/16   14.29 ER40-1429-9/16
  14.5 14.50 ER40-1450-14.5mm
37/64   14.68 ER40-1468-37/64
  15.0 15.00 ER40-1500-15.0mm
19/32   15.08 ER40-1508-19/32
39/64   15.48 ER40-1548-39/64
  15.5 15.50 ER40-1550-15.5mm
5/8   15.88 ER40-1588-5/8
  16.0 16.00 ER40-1600-16.0mm
41/64   16.27 ER40-1627-41/64
  16.5 16.50 ER40-1650-16.5mm
21/32   16.67 ER40-1667-21/32
  17.0 17.00 ER40-1700-17.0mm
43/64   17.07 ER40-1707-43/64
11/16   17.46 ER40-1746-11/16
  17.5 17.50 ER40-1750-17.5mm
45/64   17.86 ER40-1786-45/64
  18.0 18.00 ER40-1800-18.0mm
23/32   18.26 ER40-1826-23/32
  18.5 18.50 ER40-1850-18.5mm
47/64   18.65 ER40-1865-47/64
  19.0 19.00 ER40-1900-19.0mm
3/4   19.05 ER40-1905-3/4
49/64   19.45 ER40-1945-49/64
  19.5 19.50 ER40-1950-19.5mm
25/32   19.84 ER40-1984-25/32
  20.0 20.00 ER40-2000-20.0mm
51/64   20.24 ER40-2024-51/64
  20.5 20.50 ER40-2050-20.5mm
13/16   20.64 ER40-2064-13/16
  21 21.00 ER40-2100-21mm
53/64   21.03 ER40-2103-53/64
27/32   21.43 ER40-2143-27/32
  21.5 21.50 ER40-2150-21.5mm
55/64   21.83 ER40-2183-55/64
  22 22.00 ER40-2200-22.0mm
7/8   22.23 ER40-2223-7/8
  22.5 22.50 ER40-2250-22.5mm
57/64   22.62 ER40-2262-57/64
  23 23.00 ER40-2300-23.0mm
29/32   23.02 ER40-2302-29/32
59/64   23.42 ER40-2342-59/64
  23.5 23.50 ER40-2350-23.5mm
15/16   23.81 ER40-2381-15/16
  24 24.00 ER40-2400-24.0mm
61/64   24.21 ER40-2421-61/64
  24.5 24.50 ER40-2450-24.5mm
31/32   24.61 ER40-2461-31/32
  25 25.00 ER40-2500-25.0mm
63/64   25.00 ER40-2500-63/64
1   25.40 ER40-2540-1
  25.5 25.50 ER40-2550-25.5mm
  26 26.00 ER40-2600-26.0mm