1/4X5 Acoustical Eye Lag Steel Plain (Pack Qty 500) BC-1480LAEP

An externally threaded fastener with a spaced thread pattern, tapered point, an integrally formed circular shoulder (which can have a serrated bottom surface). Above the shoulder is an unthreaded section of shank that flattens at the top end of the screw. In the middle of the flattened “head is a hole” Designed specifically for attaching drop ceiling tie wires to woodYou may also like 1/2-13X1 1/2 Serrated Hex Flanged Washer Full Thread Screw Black Oxide (Pack Qty 300) BC-5024MWWB.