THREAD 1/8 x 27 PTF
(SAE J534)
A. 27/32″
B. 19/64″
C. 7/32″
Hex size. 7/16″
Material. 1215
Zinc Finish. Yellow/Clear
Type. 90°

The 1/8”x 27 PTF should be assembled into 1/8”x27 NPT threaded hole.