3D Master Red

5-Axis Bases

5-Axis Chucks

ACCU Mini Mini Cylindrical Shank

ACCU Mini Mini HSK Shank

ACCU Mini Mini Magnetic Base

ACCU Tapper

ATC Alignment Tool

Accessories

Accu Center

Adjustable Drill Holder

Air Filter Regulators

Air Fittings

Angle Heads

BIG-PLUS Cleaner

Back Spotting

Back Stops

Base Master

Basic Arbors

Blank Bars

Boring and Modular Tools

Build-Up

CC For Rough and Fine Boring

CNC Lathe

Carbide Bars

Cartridges

Centering

Centering Tool

Chain Clamping

Chamfer Mills

Chamfer Rings

Chamfering

Chip and Coolant Fans

Clamping Knobs

Clamping Knobs and Pallets

Cleaners

Collet Chuck Adapters

Collet Chucks

Collet Ejectors

Collet Nuts

Collets

Compact

Components

Contact Grip Heads

Contact Grip Holders

Coolant Inducers

Coolant Pipes

Cutting Tools

Dial Gage Adapters

Dial Indicator Stands

Drill Chuck Adapters

Drill Reamers

Drill Tapper

Drilling

Dyna Contact

Dyna Force

Dyna Line Portable

Edge and Point Finders

End Mill Adapters

End Mill Holders

End Mills

Engraving Mills

Extensions and Reductions

Face Mill

Face Mills

Fine Boring

Fine Heads

Fine Insert Holders

Fine O.D. Turning

GTG

Groove Milling Adapters

HSS Pilot and Spot Drills

HSS Twist Drills

Heavy Metal Bars

Hi-Power

Hi-Power J Series

Hi-Power Milling

Hi-Power Slim

Hi-Rigidity

High Speed Steel

Hydraulic Chucks

I.C. Drill Inserts

I.C. Drills - Helical Flute

I.C. Drills - Straight Flute

Indexable

Inserts

Jet-Through

Kits

Kombi Grip

Large Diameter Boring

Lathe Master

Legacy Parts

Level Master

Long Tool

Lubricating Guns

MEGA Double Power

MEGA E

MEGA ER Grip

MEGA Micro

MEGA New Baby

MEGA Perfect Grip

MEGA Synchro

MU/F Standard Magnetic Base

MU/FS Cast Iron Base

Measuring Instruments

Milling Chuck Adapters

Milling Chucks

Modular Components

Modular Holders

Multi-Axis Systems

Multi-Axis Systems Turning Tools

NBS Collet

New Baby

New Baby Collet

O-Rings

O.D. Turning

Other Holders

Other Inserts

Pallets

Parts and Accessories

Point Master

Pre-Assembled Chucks

Pullstud Bolts

RBX

Rough Boring

Rough Clamping Bases

Rough Insert Holders

Round Chucks

SG Clamping Arm

SP/SC for Rough Boring

ST Lock

SU/F Small Magnetic Base

Screws

Series 112 Balanceable Heads

Series 112 Components

Series 112 Dial Heads

Series 112 Digital Heads

Series 309 Dial Heads

Series 309 Insert Holders

Series 310 Auto-Balanceable Heads

Series 310 Dial Heads

Series 310 Digital Heads

Series 310 Insert Holders

Series 315 Heads

Series 315 Insert Holders

Series 319 Heads

Series 319 Insert Holders

Series 319 O.D. Turning

Series 319 Smart Damper

Series 470 Dial Heads

Series MW

Shanks

Shell Mill Adapters

Shell and Face Mill Holders

Shims

Shrink Fit Holders

Shrink Fit Holders Jet Through

Shrink Fit Holders Slim

Side Lock

Side Lock Drill Holders

Small Bore Type

Smart Damper Heads

Smart Damper Turning

Smart Damper for Milling

Solid Carbide

Solid Carbide End Mills

Solid Carbide Pilot and Spot Drills

Solid Carbide Twist Drills

Spade Drill Inserts

Spade Drills

Spare Parts

Spare Parts and Accessories

Special Tool Accessories

Spindle Cleaners

Spindle Measurement

Spindle Speed Increasers

Stabilizer System

Standard

Super Slim

Swiss Automatic Lathe Tooling

System 68 for 5-Axis

T-Slot Clean

TG Collet

TP/TC for Fine Boring

Tapping Holders

Test Bars

Tool Assembly

Tool Holders

Tool Master

Tool Offsets

Tool Presetters

Tool Pro

Tooling Cleaners

Tooling Mate

Torque Fit

Turning Tools

Ultra Precision

Universal 30°

Universal 90°

WC for Fine Boring

Washers

Workholding

Wrenches

OCA31-21

OCA31-21

OCA31-21

SKU OCA31-21

UOM Each

Sealed Collet, Ø31x21mm

Price $146.00

Details

Specs

General

Nominal Clamping Size (mm)

21

Collet Series

M-C31

Product Resources

Safety Documents

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