11/16" MILLED HEX NUT 1/4 IPS. 
Unfinished milled steel hex nut. 
(a milled steel locknut is cut from a solid steel sheet rod.) 
It is 11/16" outside diameter with 1/2" threaded hole. 
(works with 1/4 IPS pipe) 
$2 minimum charge orders less than $20. 
$.50 packing charge for each parts box.