5/16-18 X 1 (.40 WIDTH) SOLAR PANEL ROOF RACK T-BOLT STAINLESS STEEL has a slot in the thread to help lock it into the rail.
(Base Dimensions : .90" Length, .40" Width, .16" Height)
100 PER BOX / PRICE PER BOX
You can use c4-tab3-global to give your customers more information on shipping
