A machine bolt is a screw that uses a common thread. It can be used for locking nuts and objects with threaded holes. The shape is usually countersunk, thus, the machine screw is also called the CSK bolt and countersunk head screw. However, the specifications are divided into metric (mm thread), Inch (W Webster thread), American standards (NC, NF, and Fan), Counting teeth, etc., so there are many specifications. It is recommended to take samples or take objects with threaded holes to try to lock them directly, which can reduce the purchase error and communication gap.

  • Machine Screw Size: M2.9-M6.3(#5-#16)
  • Screw Material: Carbon steel, Alloy steel, Stainless Steel
  • Screw Length: 1/4"-6"(6.35mm-150mm)