Alloy Steel Socket Cap Screw, Flat Head, Hex Socket Drive, 1/2"-13, 1-1/4" Length (Pack of 1000)

Socket Cap Screws are reliable and durable and are used in many applications. They are available in a variety of head styles and materials.Alloy Steel is steel that has been alloyed with other materials to improve overall physical properties. Steels are designated by a 4 number SAE Steel grade. The first two digits indicate the primary materials used to form the steel. The last 2 digits identify the percentage of carbon for the alloy (in hundredths). Tensile strength ranges for the alloys typically used in these fasteners range from 170,000 to 180,000 psi (pounds per square inch), making these amongst the strongest of materials. Flat head fasteners are designed to fit flush to the surface when used with countersunk holes. Length is measured from the top of the head. Hex socket drive systems are driven by hex wrenches or power tools with hexagonal bits. A threaded fastener's size name includes information about the major external diameter, followed by the threads per inch, which indicates if it is coarse or fine. Coarse threads are better when working with brittle materials; they are sturdier and are easier to thread and unthread compared to fine. Coarse threading also allows for thicker coatings and platings.

• Socket Cap Screws are durable and reliable
• Alloy Steel is one of the strongest materials used in fasteners, making this an ideal material to use when the primary concern is the application pulling apart
• Flat head style allows fastener to sit flush to the surface
• Drive system is a hexagon-shaped hole
• Coarse threads are better for brittle materials, and will assemble and disassemble more quickly than fine threads