Button Head Socket Cap Screws are bolts or machine screws with a Hex or Allen drive style. Button Head Socket Cap Screws have a clean and unstamped domed head with a flat bottom that protrudes above the installation surface for a nice finished look. A Button Socket Cap Screw, also known as a Button Socket Head Cap Screw, Socket Screw or Allen Button Socket Bolt, is a type of cap screw with a cylindrical head and hexagonal drive hole. Button Flange Socket Head Screws feature a built in washer, which creates a large flange to keep the screw head from crushing thin or soft materials.
Button Flange Head Socket Cap Screws are fully threaded and have a Class 3A thread fit. Head height is measured from the bottom of the flange to the top of the head. Screw length is measured from under the flange. Note: Button head screws are not recommended for high strength applications. 18-8 (304) Stainless Steel—Offers excellent corrosion resistance. May be mildly magnetic. Minimum Rockwell hardness is B70. Minimum tensile strength is 70,000 psi.
Sizes Listed As:Diameter - Thread Pitch x Length from Underside of Head