DIN 653 Flat (Low Profile) Knurled Head Thumb Screws

DIN 653 Flat (Low Profile) Knurled Head Thumb Screws

They are flat, low profile knurled thumb screws with a wide shallow cylindrical head with protruding (knurled) edges defined in the DIN 653 standard published by the German Standardization Institute (DIN). Because these screws do not have a raised shoulder under the head, the head sits closer to the surface when the screw is fully tightened. Metric screws are designed for fast and convenient tightening and loosening by hand without the need for any tools or drivers. The large head with knurled grip allows the screw to be tightened or loosened with minimal external force. This feature makes the screw an ideal fastener for any device that requires frequent assembly/disassembly. It is widely used to fasten the safety covers of electronic devices. They are typically inserted and tightened into a pre-drilled pilot hole and are used when a low profile is preferred. These screws are manufactured from steel and stainless steel.

DIN 653 Flat (Low Profile) Knurled Head Thumb Screws

The requirements for flat (low profile) knurled thumb screws are listed in the DIN 653 standard under the following headings:

  • Mechanical properties of stainless steel for flat (low profile) knurled thumb screws
  • Chemical composition of stainless steel for flat (low profile) knurled thumb screws
  • Mechanical properties of steel for flat (low profile) knurled thumb screws
  • Chemical composition of steel for flat (low profile) knurled thumb screws

The knurled thumbscrews have a round head with a knurled outside diameter that provides grip for one person to use to turn the screw. These screws are manufactured from zinc plated steel, brass and stainless steel. Knurled head screws are a type of thumbscrew designed to be turned by hand. These types of screws (thumb screws) offer manual adjustment that allows a simple action to fasten, tighten, loosen or remove the screws. The main advantage is that no tools are required, so installers and end-users can adjust the screws with just the thumb and forefinger.

Among the numerous test, measurement, analysis and evaluation studies it provides for businesses in various sectors, our organization also provides testing services for flat (low profile) knurled thumb screws, within the scope of DIN 653 standard, with its trained and expert staff and advanced technological equipment.

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