The maximum and minimum pitch diameter (E) for each class of thread can be found in machinerys hand book. Select the proper wire size for either the number or threads per inch (US) or thread pitch …

Inch & Metric Thread Standards Visit our online store for product availability by the nominal major diameter and the number of threads per inch. For example, a 1/4-20 (UNC coarse) thread has a 1/4" …

Standard Property Class 12.9 socket screw products manufactured in the United States have 4g6g thread tolerances as the form most closely resembles the 3A thread form used on inch series socket …

There are specific thread pitches for each standard thread diameter of UNC, UNF and UNEF threads. Refer to the Technical Information of the Yamawa catalog to see the standard thread

Flat Face Thread (ORFS) = CAST 4000 series. Also UNF.

DEFINING THREAD TERMINOLOGY In order to make a proper thread selection, it is important to understand the terminology used to describe the characteristics of the varying thread types.

This is the Unified thread series and consists of specifications for Unified Coarse (UNC) Unified Fine (UNF) and Unified Extra Fine (UNEF) threads. Metric threads are also standardized. Metric thread …