200pcs M3 Grade 12.9 Carbon Steel Cup Point Socket Set Screws Fasteners, 3/4/5/6/8/10/12/14mm Black

• 12.9 grade alloy steel material with oxidation Appearance has good strength of extension and corrosion resistance in many environments
• They are multipurpose hex socket head set screws that you can simple drive with a hex key
• There are 8 common sizes and you can concentrate on your project without worrying about not having the correct screws
• Ideal for use in confined areas as fixing component, industrial and construction fasteners
• Used widely in the home and office appliance, communication equipment, ship assembly and other machinery industry

Description: A set screw is a type of screw generally used to secure an object within or against another object without using a nut. The most common examples are securing a pulley or gear to a shaft. Set screws are fully threaded and has no head projecting past the major diameter of the screw thread. These set screws are driven with an internal-wrenching hex socket drive. Specifications: Material: 12.9 grade carbon steel Appearance Finishing: Oxidation Color: Black Size and Quantity: M3x3mm 25pcs M3x4mm 25pcs M3x5mm 25pcs M3x6mm 25pcs M3x8mm 25pcs M3x10mm 25pcs M3x12mm 25pcs M3x14mm 25pcs Package Includes: 200pcs x Screws