4mb-4mj 0.5635 hex nut. 1.140 length. 0.172 drill. 37 degree flared thread size 7/16-20 in sae J475 both end s. material steel made from jis S20s (japanese standard) . plating: trivalent and/or yellow hexavalent chrome
3a all ends thread class 16 1st end thread quantity per inch fitting assembly, adapter ring locked port connection to beam seal fitting 6ai-4v titanium alloy per AMS4928, ams 4965 or AMS4967; lockring 1286 corrosion resistant steel per AMS5731, AMS5732, ams 5734 or ams 5737