Hi-Low Screw
Black Oxide Bugle Head Hi-Low Thread Wood ScrewHi-Low Screw
Stainless Steel SUS304 Full/Half Hi-Low Thread, phillips/Star Head ScrewHi-Low Thread Cutting
Stainless Steel A2 Bugle Star Head Half Thread Hi Low Screw with Thread Cutting ...Type 17 Hi-Low
Stainless Steel Bugle Head Thread Cutting Type 17 Hi-Low ScrewHi-Low Full Thread
Stainless Steel A4 Bugle Head Full Hi-Low Thread Screw