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. Country Of Origin: China Package length: 1.25 Package Width: 3.87 Package Height: 1.43 UPC 008236002591 ASIN B00HYK5AV8 Brand Hillman Color Silver Model 727 Set Name 20-Pack Head Type Hex Size Name 2 inches Metal Type Alloy Steel Unit Count 20 Count Part Number 727 Thread Size 3 Thread Type Unc Finish Types Glossy Grade Rating Grade 2 Manufacturer The Hillman Group Thread Class 1A Thread Style Right Hand Fastener Size 2 inches Fastener Type Hanger Bolt Item Diameter 0.19 inches Item Hardness Grade 2 Material Type Alloy Steel Exterior Finish Zinc Item Dimensions 1.25 x 3.87 x 1.43 inches Number Of Items 20 Thread Coverage Threaded on Both End Number of Pieces 20 Outside Diameter 0.19 inches Screw Head Style Hex Screw Point Style Cone Point Manufacturer Grade Grade 727 Global Trade Identification Number 00008236002591