Hanson-Whitney Inc.
Specializes in manufacture of standard and customized high speed steel ground thread taps, dies, and thread milling cutters. Also produces selection of tool holders and tool holding systems.
http://www.hansonwhitney.com

Richard Lloyd Ltd.
Manufacturer of premium 'Galtona' cutting tools, including high speed steel (HSS) standard taps, gold cut high performance taps, special taps, thread gauges and milling cutters.
http://www.galtona.com/

K Suhr A/S
Hot, Cold and Ultrasonic Knife Cutting machines from SUHR
http://www.suhr.dk/

Light Industry Cutting Tools Mill China
苏州普飞特锯业工具有限公司
http://www.qingong-tools.com/

Boch
Metrology consulting and special cutting tools for precision machining in aerospace, defence, automotive. Other services:Consulting in lenght and laser metrology, ISO 9000 - 14000 Quality Systems, AQAP standards, software for quality control, technical translations.
http://www.boch.net

Capital Tool Industries
Gear Hobs , Spline & Worm Wheel hobs, Chain Sprocket Hobs, Gear & Sprocket milling Cutters, Scalping & Cylindrical Cutters, Side & Face Cutters
http://www.capital-tool.com

Custom Tool & Grinding
Specializes in production of non-standard cutting tools. Includes inserts, form cutters and drills, step tools and drills, milling cutters, and indexable tools. Available in solid carbide, carbide tipped, and high speed steel.
http://www.customtoolandgrinding.com

Ideal Thread Gage Manufacturing Co, Inc.
Ideal Gage has been serving the Aerospace Industry for over fifty years with Competitive Pricing on all gages,Free 8 8 9 Thread Engineering Standard Plugs and Many Specials in Stock. High quality gage,aerospace gages,threaded plug gage,ring gage,taperlock thread plug gages,pin gage,plug gage,metric gage,agd style thread ring gages,
http://www.idealgage.com/

Pennoyer-Dodge Co.
Manufacture, recondition, and calibration of thread rings, thread plugs, and cylindrical gages. Custom Go and Not Go thread gauges and functional gaging.
http://www.pdgage.com

Thread Check Inc
We offer a complete line of precision thread gauges, plain cylindrical gages, patented 3 wire measuring systems, powerful thread engineering software, master discs, gear measuring wires plus more with free technical support.
http://www.threadcheck.com/