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THREAD MILLS

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Other Threads: Metric Pitch Threads   NPT & NPTF Pipe Threads    BSPPL   BSPT
Technical Help: Thread Mill Application Notes

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 exacting specifications.

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

Tosco Thread Mills

STANDARD SPECIFICATIONS
UNJMIL S 7742MIL S 8879
UNJF 3BUNJ 3AUNJ 3B
UNF 3BUN 3B 

Additional Information: Thread Mills are also referred to as Thread Hobs.
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