Screw and washer assemblies are commonly called "SEMS™" when they are preassembled. The innovative SEMS™ products are another major fastening invention by ITW Shakeproof that changed the industry. Tooth lock, helical spring lock, dished type and conical washers, to name a few, can be preassembled to machine screws, as well as, thread forming, thread cutting and self-drilling screws. These combinations offer unique capabilities that would otherwise be unavailable for easy and efficient assembly operations.
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Screw and Washer Assemblies

Screw and Washer Assemblies
Screw and Washer Assemblies

Screw and Washer Assemblies
Description N/A Screw and washer assemblies are commonly called "SEMS™" when they are preassembled. The innovative SEMS™ products are another major fastening invention by ITW Shakeproof that changed the industry. Tooth lock, helical spring lock, dished type and conical washers, to name a few, can be preassembled to machine screws, as well as, thread forming, thread cutting and self-drilling screws. These combinations offer unique capabilities that would otherwise be unavailable for easy and efficient assembly operations. N/A Sems, 6 lobe pan head screw PH M4 .7 x 18
Material N/A Steel N/A
Thread Size N/A M5 N/A M4 .7 x 18
Finish N/A Oil Phosphate N/A
Length N/A 16.6 mm N/A
Number of Lobes N/A 6 N/A
Point N/A Mat N/A
Thread Pitch Size N/A 0.8 in N/A
Features and Benefits N/A Some of the Important advantages of screw and washer assemblies include:
  • Eliminating small parts handling and dropped parts
  • Ensuring proper part usage
  • Lower purchasing, inventory and assembly costs
  • Increased assembly efficiency and productivity
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Note N/A For more information, please to email your inquiry or contact us. N/A
Original Equipment Manufacturer (OEM) Reference N/A N/A Canoo 0X1E1F-02
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