Standard End Fastener Black Zinc-Plated Number of Mounting Holes 1 Overall Height 1 in Slide-In End Fastener Overall Length 1 in Overall Width 5/16 in Fastener Thread Length 1 in Steel Fastener Thread Size 5/16 In.-18 15 Series System of Measurement Inch For Profile Width/Height 3/16 in End Fastener For Profile Type Single For Slot Width 21/64 in