Threads: For Unified Threads
Class : 2B
Flutes : Thread Forming Taps
Tolerance Class :YAMAWA G Class
Oil Grooves: 5/16 ·3/8 = 3, 7/16 ·1/2 = 4
Chamfer Length : P=4P(For Through Hole), B=2P(For Blind Hole
Surface Treatment : Oxide
For more information, please refer to the attachment.