The Southwick & Meister, Inc. team provides a range of innovative multi-purpose collets (MPC), quick-change tapping collets, MPC systems, and more, serving customers throughout the world. To find details and further technical information on the MPC products we provide, please browse the listings below.
The Multi-Purpose Collet System was designed as an economical method of accurately holding drills, reamers, taps, boring tools, grinding wheels, etc., in all types of machining and grinding operations.
The MPC collet is a unique, quick-releasing, multi-slotted collet that collapses parallel to its axis.
The metric series of MPC collets are all made to a nominal metric bore size in increments of .5MM or 1MM and will collapse .5MM to 1MM depending on collet size. Refer to the “Collet Selection Chart” — (Metric).
| CAT. NO | REF. DIM. | |
|---|---|---|
| A | B | |
| MPC8 | 8.5 | 13.5 |
| MPC11 | 11.5 | 18 |
| MPC12 | 12 | 19.5 |
| MPC16 | 17 | 27.5 |
| MPC20 | 31 | 31.5 |
| MPC25 | 26 | 34 |
| MPC32 | 33 | 40 |
| MPC40 | 41 | 46 |
| MPC8 | |
|---|---|
| CAT NO. | RANGE INCHES |
| MPC8 – 1 | .039 – .020 |
| MPC8 – 1.5 | .059 – .039 |
| MPC8 – 2 | .079 – .059 |
| MPC8 – 2.5 | .098 – .079 |
| MPC8 – 3 | .118 – .098 |
| MPC8 – 3.5 | .138 – .118 |
| MPC8 – 4 | .157 – .138 |
| MPC8 – 4.5 | .177 – .157 |
| MPC8 – 5 | .197 – .177 |
|
9 COLLETS / SET
|
|
| MPC11 | |
|---|---|
| CAT NO. | RANGE INCHES |
| MPC11 – 1 | .039 – .020 |
| MPC11 – 1.5 | .059 – .039 |
| MPC11 – 2 | .079 – .059 |
| MPC11 – 2.5 | .098 – .079 |
| MPC11 – 3 | .118 – .098 |
| MPC11 – 3.5 | .138 – .118 |
| MPC11 – 4 | .157 – .138 |
| MPC11 – 4.5 | .177 – .157 |
| MPC11 – 5 | .197 – .177 |
| MPC11 – 5.5 | .217 – .197 |
| MPC11 – 6 | .236 – .217 |
| MPC11 – 6.5 | .256 – .236 |
| MPC11 – 7 | .276 – .256 |
|
13 COLLETS / SET
|
|
| MPC12 | |
|---|---|
| CAT NO. | RANGE INCHES |
| MPC12 – 1 | .039 – .020 |
| MPC12 – 1.5 | .059 – .039 |
| MPC12 – 2 | .079 – .059 |
| MPC12 – 2.5 | .098 – .079 |
| MPC12 – 3 | .118 – .098 |
| MPC12 – 3.5 | .138 – .118 |
| MPC12 – 4 | .157 – .138 |
| MPC12 – 4.5 | .177 – .157 |
| MPC12 – 5 | .197 – .177 |
| MPC12 – 5.5 | .217 – .197 |
| MPC12 – 6 | .236 – .217 |
| MPC12 – 6.5 | .256 – .236 |
| MPC12 – 7 | .276 – .256 |
|
13 COLLETS / SET
|
|
| MPC16 | |
|---|---|
| CAT NO. | RANGE INCHES |
| MPC16 – 1 | .039 – .020 |
| MPC16 – 2 | .079 – .039 |
| MPC16 – 3 | .118 – .079 |
| MPC16 – 4 | .157 – .118 |
| MPC16 – 5 | .197 – .157 |
| MPC16 – 6 | .236 – .197 |
| MPC16 – 7 | .276 – .236 |
| MPC16 – 8 | .315 – .276 |
| MPC16 – 9 | .354 – .315 |
| MPC16 – 10 | .394 – .354 |
|
10 COLLETS / SET
|
|
| MPC20 | |
|---|---|
| CAT NO. | RANGE INCHES |
| MPC20 – 2 | .079 – .039 |
| MPC20 – 3 | .118 – .079 |
| MPC20 – 4 | .157 – .118 |
| MPC20 – 5 | .197 – .157 |
| MPC20 – 6 | .236 – .197 |
| MPC20 – 7 | .276 – .236 |
| MPC20 – 8 | .315 – .276 |
| MPC20 – 9 | .354 – .315 |
| MPC20 – 10 | .394 – .354 |
| MPC20 – 11 | .433 – .394 |
| MPC20 – 12 | .472 – .433 |
| MPC20 – 13 | .512 – .472 |
|
12 COLLETS / SET
|
|
| MPC25 | |
|---|---|
| CAT NO. | RANGE INCHES |
| MPC25 – 2 | .079 – .039 |
| MPC25 – 3 | .118 – .079 |
| MPC25 – 4 | .157 – .118 |
| MPC25 – 5 | .197 – .157 |
| MPC25 – 6 | .236 – .197 |
| MPC25 – 7 | .276 – .236 |
| MPC25 – 8 | .315 – .276 |
| MPC25 – 9 | .354 – .315 |
| MPC25 – 10 | .394 – .354 |
| MPC25 – 11 | .433 – .394 |
| MPC25 – 12 | .472 – .433 |
| MPC25 – 13 | .512 – .472 |
| MPC25 – 14 | .551 – .512 |
| MPC25 – 15 | .591 – .551 |
| MPC25 – 16 | .630 – .591 |
|
15 COLLETS / SET
|
|
| MPC32 | |
|---|---|
| CAT NO. | RANGE INCHES |
| MPC32 – 3 | .118 – .079 |
| MPC32 – 4 | .157 – .118 |
| MPC32 – 5 | .197 – .157 |
| MPC32 – 6 | .236 – .197 |
| MPC32 – 7 | .276 – .236 |
| MPC32 – 8 | .315 – .276 |
| MPC32 – 9 | .354 – .315 |
| MPC32 – 10 | .394 – .354 |
| MPC32 – 11 | .433 – .394 |
| MPC32 – 12 | .472 – .433 |
| MPC32 – 13 | .512 – .472 |
| MPC32 – 14 | .551 – .512 |
| MPC32 – 15 | .591 – .551 |
| MPC32 – 16 | .630 – .591 |
| MPC32 – 17 | .669 – .630 |
| MPC32 – 18 | .709 – .669 |
| MPC32 – 19 | .748 – .709 |
| MPC32 – 20 | .787 – .748 |
|
18 COLLETS / SET
|
|
| MPC40 | |
|---|---|
| CAT NO. | RANGE INCHES |
| MPC40 – 4 | .157 – .118 |
| MPC40 – 5 | .197 – .157 |
| MPC40 – 6 | .236 – .197 |
| MPC40 – 7 | .276 – .236 |
| MPC40 – 8 | .315 – .276 |
| MPC40 – 9 | .354 – .315 |
| MPC40 – 10 | .394 – .354 |
| MPC40 – 11 | .433 – .394 |
| MPC40 – 12 | .472 – .433 |
| MPC40 – 13 | .512 – .472 |
| MPC40 – 14 | .551 – .512 |
| MPC40 – 15 | .591 – .551 |
| MPC40 – 16 | .630 – .591 |
| MPC40 – 17 | .669 – .630 |
| MPC40 – 18 | .709 – .669 |
| MPC40 – 19 | .748 – .709 |
| MPC40 – 20 | .787 – .748 |
| MPC40 – 21 | .827 – .787 |
| MPC40 – 22 | .866 – .827 |
| MPC40 – 23 | .906 – .866 |
| MPC40 – 24 | .945 – .906 |
| MPC40 – 25 | .984 – .945 |
| MPC40 – 26 | 1.024 – .984 |
|
23 COLLETS / SET
|
|
|
MPC11
|
|
|---|---|
| CAT NO. | RANGE INCHES |
| MPC11 – 1/16 | .063 – .044 |
| MPC11 – 3/32 | .093 – .074 |
| MPC11 – 1/8 | .125 – .106 |
| MPC11 – 5/32 | .156 – .137 |
| MPC11 – 3/16 | .188 – .169 |
| MPC11 – 7/32 | .219 – .200 |
| MPC11 – 1/4 | .250 – .231 |
|
7 COLLETS / SET
|
|
|
MPC16
|
|
|---|---|
| CAT NO. | RANGE INCHES |
| MPC16 – 1/16 | .063 – .032 |
| MPC16 – 3/32 | .094 – .063 |
| MPC16 – 1/8 | .125 – .094 |
| MPC16 – 5/32 | .156 – .125 |
| MPC16 – 3/16 | .188 – .156 |
| MPC16 – 7/32 | .219 – .188 |
| MPC16 – 1/4 | .250 – .219 |
| MPC16 – 9/32 | .281 – .250 |
| MPC16 – 5/16 | .313 – .281 |
| MPC16 – 11/32 | .344 – .313 |
| MPC16 – 3/8 | .375 – .344 |
| MPC16 – 13/32 | .406 – .375 |
|
12 COLLETS / SET
|
|
|
MPC20
|
|
|---|---|
| CAT NO. | RANGE INCHES |
| MPC20 – 1/16 | .063 – .032 |
| MPC20 – 3/32 | .094 – .063 |
| MPC20 – 1/8 | .125 – .094 |
| MPC20 – 5/32 | .156 – .125 |
| MPC20 – 3/16 | .188 – .156 |
| MPC20 – 7/32 | .219 – .188 |
| MPC20 – 1/4 | .250 – .219 |
| MPC20 – 9/32 | .281 – .250 |
| MPC20 – 5/16 | .313 – .281 |
| MPC20 – 11/32 | .344 – .313 |
| MPC20 – 3/8 | .375 – .344 |
| MPC20 – 13/32 | .406 – .375 |
| MPC20 – 7/16 | .438 – .406 |
| MPC20 – 15/32 | .469 – .438 |
| MPC20 – 1/2 | .500 – .469 |
|
15 COLLETS / SET
|
|
|
MPC25
|
|
|---|---|
| CAT NO. | RANGE INCHES |
| MPC25 – 3/32 | .094 – .063 |
| MPC25 – 1/8 | .125 – .094 |
| MPC25 – 5/32 | .156 – .125 |
| MPC25 – 3/16 | .188 – .156 |
| MPC25 – 7/32 | .219 – .188 |
| MPC25 – 1/4 | .250 – .219 |
| MPC25 – 9/32 | .281 – .250 |
| MPC25 – 5/16 | .313 – .281 |
| MPC25 – 11/32 | .344 – .313 |
| MPC25 – 3/8 | .375 – .344 |
| MPC25 – 13/32 | .406 – .375 |
| MPC25 – 7/16 | .438 – .406 |
| MPC25 – 15/32 | .469 – .438 |
| MPC25 – 1/2 | .500 – .469 |
| MPC25 – 17/32 | .531 – .500 |
| MPC25 – 9/16 | .563 – .531 |
| MPC25 – 19/32 | .594 – .563 |
| MPC25 – 5/8 | .625 – .594 |
|
18 COLLETS / SET
|
|
|
MPC32
|
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| 19 COLLETS / SET | |||||||||||||||||||||||||||||||||||||||||||
| CATALOG NUMBER |
COLLET USED |
SHANK DIA. A |
SHANK LENGTH | TOTAL LENGTH B (MM) |
NUT STYLE B (MM) |
|
|---|---|---|---|---|---|---|
| B1 (MM) | B1 (IN.) | |||||
| CY8-8-56M | MPC8 | 8mm | 56 | 2.20 | 70 | M |
| CY8-8-80M | MPC8 | 8mm | 80 | 3.15 | 100 | M |
| CY8-10-80M | MPC8 | 10mm | 80 | 3.15 | 95 | M |
| CY8-12-80M | MPC8 | 12mm | 80 | 3.15 | 95 | M |
| CY8-.500-80M | MPC8 | 0.5 | 80 | 3.15 | 95 | M |
| CY11-7-56M | MPC11 | 7mm | 56 | 2.2 | 64 | M |
| CY11-8-56M | MPC11 | 8mm | 56 | 2.2 | 70 | M |
| CY11-.250-45M | MPC11 | 0.25 | 45 | 1.77 | 58 | M |
| CY11-.500-154M | MPC11 | 0.5 | 154 | 6.06 | 168 | M |
| CY11-.625-154M | MPC11 | 0.625 | 154 | 6.06 | 168 | M |
| CY11-16-140M | MPC11 | 16mm | 140 | 5.512 | 172.5 | M |
| CY11-750-85MDE | MPC11 | .750 | 85 | 3.346 | 100 | M(x2) |
| CY11-22-100H | MPC11 | 22mm | 100 | 3.94 | 4.925 | H |
| CY12-14-25H | MPC12 | 14mm | 25 | 0.98 | 38 | H |
| CY12-.500-25H | MPC12 | 0.5 | 25 | 0.98 | 38 | H |
| CY12-20-80H | MPC12 | 20mm | 80 | 3.15 | 99 | H |
| CY12-1.000-140H | MPC12 | 1 | 140 | 5.51 | 159 | H |
| CY16-.500-154M | MPC16 | 0.5 | 154 | 6.06 | 168 | M |
| CY16-.625-60H | MPC16 | 0.625 | 60 | 2.36 | 85 | H |
| CY16-.625-80M | MPC16 | 0.625 | 80 | 3.15 | 110 | M |
| CY16-.625-140H | MPC16 | 0.625 | 140 | 5.51 | 157 | H |
| CY16-.750-50H | MPC16 | 0.75 | 50 | 1.97 | 75 | H |
| CY16-.750-100H | MPC16 | 0.75 | 100 | 3.94 | 125 | H |
| CY16-.750-134M | MPC16 | 0.75 | 134 | 5.28 | 160 | M |
| CY16-20-100H | MPC16 | 20mm | 100 | 3.94 | 125 | H |
| CY16-22-80H | MPC16 | 22mm | 80 | 3.15 | 100 | H |
| CY16-22-134H | MPC16 | 22mm | 134 | 5.28 | 160 | H |
| CY16-1.000-100H | MPC16 | 1 | 100 | 3.94 | 134 | H |
| CY16-1.000-140H | MPC16 | 1 | 140 | 5.51 | 157 | H |
| CY20-.625-100M | MPC20 | 0.625 | 100 | 3.94 | 125 | M |
| CY20-16-100M | MPC20 | 16mm | 100 | 3.94 | 125 | M |
| CY20-.750-30H | MPC20 | 0.75 | 30 | 1.18 | 55 | H |
| CY20-20-100M | MPC20 | 20mm | 30 | 3.94 | 125 | M |
| CY20-22-80H | MPC20 | 22mm | 80 | 3.15 | 100 | H |
| CY20-22-123H | MPC20 | 22mm | 123 | 4.84 | 140 | H |
| CY20-1.00-134M | MPC20 | 1 | 134 | 5.28 | 160 | M |
| CY25-.750-35S | MPC25 | 0.75 | 35 | 1.38 | 70 | S |
| CY25-.750-50S | MPC25 | 0.75 | 50 | 1.97 | 85 | S |
| CY25-.750-100S | MPC25 | 0.75 | 100 | 3.94 | 135 | S |
| CY25-20-50S | MPC25 | 20mm | 50 | 1.97 | 85 | S |
| CY25-1.000-50S | MPC25 | 1 | 50 | 1.97 | 85 | S |
| CY25-1.000-100S | MPC25 | 1 | 100 | 3.94 | 135 | S |
| CY32-.750-50S | MPC32 | 0.75 | 35 | 1.38 | 80 | S |
| CY32-20-50S | MPC32 | 20mm | 35 | 1.38 | 80 | S |
| CY32-1.000-50S | MPC32 | 1 | 50 | 1.97 | 95 | S |
| CY32-1.250-60S | MPC32 | 1.25 | 60 | 2.36 | 105 | S |
| CY40-25-50S | MPC40 | 25mm | 50 | 1.97 | 95 | S |
| CY40-1.000-50S | MPC40 | 1 | 50 | 1.97 | 95 | S |
| CY40-1.250-60S | MPC40 | 1.25 | 60 | 2.36 | 105 | S |
|
NUTS
|
WRENCHES | ||
|---|---|---|---|
| CAT. NO. | NUT OD | THREAD | CAT. NO. |
| CY 8-N-M | 12 | M10x .75 | CY 8-W-M |
| CY11-N-M | 16 | M13x .75 | CY11-W-M |
| CY11-N-H | 19 | M14x .75 | CY11-W-H |
| CY12-N-H | 19 | M14x .75 | CY12-W-H |
| CY16-N-M | 22 | M19x1.00 | CY16-W-M |
| CY16-N-H | 28 | M22x1.50 | CY16-W-H |
| CY16-N-S | 32 | M22x1.50 | CY16-W-S |
| CY20-N-M | 28 | M24x1.00 | CY20-W-M |
| CY20-N-H | 34 | M25x1.50 | CY20-W-H |
| CY20-N-S | 35 | M25x1.50 | CY20-W-S |
| CY25-N-S | 42 | M32x1.50 | CY25-W-S |
| CY32-N-S | 50 | M40x1.50 | CY32-W-S |
| CY40-N-S | 63 | M50x1.50 | CY40-W-S |
| TAP SIZE | TAP SHANK DIAMETER |
PART NUMBER BY COLLET SERIES | ||||
|---|---|---|---|---|---|---|
| MPC16T | MPC20T | MPC25T | MPC32T | MPC40T | ||
| #0-6 | 0.141 | #0-6 | #0-6 | #0-6 | #0-6 | #0-6 |
| #8 | 0.168 | #8 | #8 | #8 | #8 | #8 |
| #10 | 0.194 | #10 | #10 | #10 | #10 | #10 |
| #12 | 0.220 | #12 | #12 | #12 | #12 | |
| 1/4” | 0.255 | 1/4 | 1/4 | 1/4 | 1/4 | |
| 5/16” | 0.318 | 5/16 | 5/16 | 5/16 | ||
| 3/8” | 0.381 | 3/8 | 3/8 | 3/8 | ||
| 7/16” | 0.323 | 7/16 | 7/16 | 7/16 | ||
| 1/2” | 0.367 | 1/2 | 1/2 | 1/2 | ||
| 9/16” | 0.429 | 9/16 | 9/16 | |||
| 5/8” | 0.480 | 5/8 | ||||
| 11/16” | 0.542 | 11/16 | ||||
