|TOSCO was one of the originators of manufacturing solid carbide
CNC thread milling cutters. That leadership is now displayed with
one of the most comprehensive offerings of thread mills available.
Stocked in three configurations, your CNC threading operations can
be completely tooled from TOSCO's extensive stock of standard thread
mills. Many have in-shank coolant holes for optimum performance. From
the smallest solid carbide thread milling cutters (0.110" dia.)
to the largest tipped mills (2.000" dia.), you get the quality
and service you expect from a premium tool manufacturer. Don't forget
that TOSCO can also design and build special thread mills to your
BUTTRESS THREAD MILLS
Did you know that TOSCO also manufactures Buttress Thread Mills? Feel
free to request More Information online
or ask your sales representative.
Class of thread
A classification system exists for ease of manufacture and interchangeability of fabricated threaded items.
Most (but certainly not all) threaded items are made to a classification standard called the Unified Screw
Thread Standard Series. This system is analogous to the fits used with assembled parts.
Classes 1A, 2A, 3A apply to external threads; Classes 1B, 2B, 3B apply to internal threads.
Class 1 threads are loosely fitting threads intended for ease of assembly or use in a dirty environment.
Class 2 threads are the most common. They are designed to maximize strength considering typical machine shop capability and machine practice.
Class 3 threads are used for closer tolerances.
For more information see: http://en.wikipedia.org/wiki/Unified_Thread_Standard