Usage Tips: For Best Results, Mark The Center Point On Both Pieces Of Wood And Hand-Tighten The Bolt To Ensure Straight AlignmentDimensions : M3*20DIY Supplies : WoodworkingHead Style : NoneScrew Type : Wood ScrewsMaterial : Carbon SteelQuantity : 40PcsFinish : zinc platedSize : m5 Threaded type : coarse, mahcine/tappingNote:1. Due to a variety of factors such as monitor brightness and light brightness, the true color of the item may be slightly different from the picture on the website.2. Please allow a slight deviation of 2-3 centimeters for manual measurement data. Double Connection, Strong And Reliable: Both Ends Feature Self-Tapping Wood Threads, Creating A Strong And Concealed Connection Between Wooden Components Without The Need For Additional Fasteners Easy Self-Tapping Installation: The Sharp Thread Design Penetrates Directly Into The Wood, Eliminating The Need For Pre-Drilling, Simplifying The Assembly Process And Reducing Wood Splitting Versatile Applications: Suitable For A Wide Range Of Woodworking And Furniture Assembly Tasks, Including Bed Frames, Staircase Structures, Cabinets, And Outdoor Furniture Projects Durable And Corrosion-Resistant: Constructed From Robust Metal With A Protective Coating, Ensuring Long-Lasting Durability In Various Environmental Conditions Full Range Of Sizes: Available In A Variety Of Thread Diameters And Lengths To Accommodate Materials Of Different Thicknesses, Providing Flexible Solutions For Various Connection Needs ASIN B0G571C6KV Brand Qingdinu Color One Color Size Name M5x40mm Part Number BPBAGAEDA-M5X40MM Thread Size #0-80 Thread Type Npsm Manufacturer Qingdinu Thread Style Left Hand Material Type Alloy Steel Item Dimensions 0.2 x 1.57 x 0.39 inches Number Of Items 1 Thread Coverage Fully Threaded