Grease fitting GH1018

THREAD 1/8 x 27 PTF (SAE J534)
A. 1″
B. 5/16″
C. 5/16″
Hex size. 1/2″
Material. 1215
Zinc Finish. Yellow/Clear
Type. Straight (female thread)

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