EZR Swiss Clamp System for ALL DIN6499 ER Tool Holders
The EzR Swiss Clamp Nuts are an upgrade over standard ER Hex-type clamping nuts or low-profile mini nuts. An innovative drive system coupled with the EzR Drive socket keeps the machine operator's hands and arms clear of sharp tooling thus preventing injury while enabling proper high-torque settings to be achieved.
The unique drive feature of EzR Nuts also lock to the drive socket, reducing the chance of the nut falling into the machine sump and getting lost.
- EzR Nuts are high-speed balanced and can be used on live or static tool holders employing the DIN6499 spec ER Collet system
- EzR Nuts are compatible with coolant disc products or steel sealed ER Collets for Coolant-Thru applications
Click here to see a video demonstration

Balanced for use with Live Tooling too!
EzR Extended Wrench Adaptor clears sharp tooling keeping your hands safe from injury while enabling accurate tightening of ER Tooling.
EzR Swiss Clamp Nuts can be tightened using standard box wrenches or 3/8" drive ratcheting socket wrenches when combined with the positive locking EzR Extended Wrench Adaptors or EzR Wrench Adaptors.
The following part numbers replace standard ER "Mini" Nuts

EZR Swiss Clamp Nuts
Replaces Standard ER Mini-Nuts
Part No. | Size | A | Thread |
---|---|---|---|
EZR08-NUT | ER08 | 12 | M10 x .75 |
EZR11-NUT | ER11 | 16 | M13 x .75 |
EZR16-NUT | ER16 | 22 | M19 x 1.00 |
EZR20-NUT | ER20 | 28 | M24 x 1.00 |
EZR25-NUT | ER25 | 35 | M30 x 1.00 |
EZR32-NUT | ER32 | 43 | M38 x 1.00 |

H Series
Part No. | Size | A | Thread |
---|---|---|---|
EZRH08-NUT | ER08 | 17.5 | M22 x 1.50 |
EZRH11-NUT | ER11 | 19 | M25 x 1.50 |
EZRH16-NUT | ER16 | 20 | M32 x 1.50 |
EZRH20-NUT | ER20 | 23 | M40 x 1.50 |
EZRH25-NUT | ER25 | 25 | M350 x 1.50 |
EZR Swiss Clamp Wrench Adaptors
Hex Driver for use with standard box wrenches or socket ratchet wrenches
Part No. | Size | H |
---|---|---|
EZR08-ADP | ER08 | 12mm |
EZR11-ADP | ER11 | 13mm |
EZR16-ADP | ER16 | 17mm |
EZR20-ADP | ER20 | 19mm |
EZR25-ADP | ER25 | 22mm |
EZR32-ADP | ER32 | 27mm |

H Series
Part No. | Size | H |
---|---|---|
EZRH08-ADP | ER08 | 12mm |
EZRH11-ADP | ER11 | 13mm |
EZRH16-ADP | ER16 | 17mm |
EZRH20-ADP | ER20 | 19mm |
EZRH25-ADP | ER25 | 22mm |
EZRH32-ADP | ER32 | 27mm |
EZR Swiss Clamp Extended Wrench Adaptors
Extended clearance driver for use with box wrenches, hex sockets or 3/8" drive ratchets.
Part No. | Size | L | H |
---|---|---|---|
EZR08-TQN | ER08 | 75mm | 12mm |
EZR11-TQN | ER11 | 75mm | 13mm |
EZR16-TQN | ER16 | 85mm | 17mm |
EZR20-TQN | ER20 | 90mm | 19mm |
EZR25-TQN | ER25 | 96mm | 22mm |
EZR32-TQN | ER32 | 96mm | 27mm |

H Series
Part No. | Size | L | H |
---|---|---|---|
EZRH16-TQN | ER08 | 85mm | 28mm |
EZRH20-TQN | ER11 | 102mm | 34mm |
EZRH25-TQN | ER16 | 112mm | 40mm |
EZRH32-TQN | ER20 | 123mm | 50mm |
EZRH40-TQN | ER25 | 140mm | 63mm |
EZR Swiss Clamp Kits
Includes (6) EzR Swiss Clamp Nuts, (1) Wrench Adaptor (1) Extended Wrench Adaptor and (1) EzR Spanner
Part No. | Size |
---|---|
EZR08-KIT | ER08 |
EZR11-KIT | ER11 |
EZR16-KIT | ER16 |
EZR20-KIT | ER20 |
EZR25-KIT | ER25 |
EZR32-KIT | ER32 |

H Series
Part No. | Size |
---|---|
EZRH16-KIT | ER16 |
EZRH20-KIT | ER20 |
EZRH25-KIT | ER25 |
EZRH32-KIT | ER32 |
EZRH40-KIT | ER40 |