40 MM Pc Screw

Product Description

Key Specifications:

• Length:
  • This is the 40mm dimension you're asking about. It refers to the length of the screw's shank.
• Thread Size:
  • This specifies the diameter and pitch of the screw's threads. Common metric sizes include M3, M4, M5, M6, M8, and M10. You'll need to know the "M" number (diameter) and the pitch (distance between threads).
• Head Type:
  • Various head types exist, including:
    • Pan head
    • Countersunk (flat) head  
    • Round head
    • Hex head  
  • The head type affects how the screw sits in the material and the type of driver needed.
• Drive Type:
  • This indicates the type of recess in the screw head:
    • Phillips
    • Slotted
    • Torx
    • Hex
• Material:
  • Common materials include:
    • Stainless steel (A2, A4)  
    • Carbon steel  
    • Nylon
• Standards:
  • Screws are often manufactured to specific standards, such as:
    • DIN (Deutsches Institut fr Normung)  
    • ISO (International Organization for Standardization)  
• Pitch:
  • The distance between screw threads.