UNC 5/16" Zylinderschraube mit Innensechskant hochfest 12,9 selbstfärbend DIN912
UNC 5/16" Socket Cap Screw High Tensile 12.9 Self Colour DIN912 UNC 5/16" (18 T.P.I.), Coarse Pitch, High Tensile (12.9), DIN 912. What is a socket cap screw/ bolt?. A screw is fully threaded and a bolt is partialy threaded.