Hillman 44946 1/4-20 X 2-1/2-Inch Stainless Steel Hanger Bolts, 12-Pack Product Description These hanger bolts are headless bolts designed to hang materials from wooden structures, walls or overhead One half has a lag thread wood screw with a pointed tip and the other half has standard machine thread with a blunt tip Commonly used to hang wiring and ceiling hooks, the assembly is complete when the lag end is screwed into a pre-drilled hole. From the Manufacturer These hanger bolts are headless bolts designed to hang materials from wooden structures, walls or overhead. One half has a lag thread wood screw with a pointed tip, and the other half has standard machine thread with a blunt tip. Commonly used to hang wiring and ceiling hooks, the assembly is complete when the lag end is screwed into a pre-drilled hole. Hanger bolts ideal for hanging materials from wooden structures, walls, or overhead Assembly is complete when the lag end is screwed into a pre-drilled hole Included variants range from 1/4"-20 to 3/8"-16 in coarse thread size Included variants range from 2" to 4" in length Stainless steel finish for best-in-class corrosion resistance