Metric DIN 653 are flat low profile knurled head thumb screws which have a wide shallow cylindrical head with ridged (knurled) sides. Because they do not have a raised shoulder below the head, the head sits closer to the surface when the screw is fully tightened. Metric thumb screws are designed for quick and convenient tightening and loosening by hand without the need of any tool or driver. The large head with the 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 require frequent assembly/disassembly. They are commonly used to fasten safety covers of electronic devices. They are typically inserted and tightened into pre-drilled tapped hole ad are used when a low profile is preferred. These screws are available in steel as well as stainless steel A2 and A4. Aspen Fasteners offers over 500.000 unique fastener products from stock in inch and metric standard in a variety of materials and finishes.
The following sizes of metric DIN 653 flat low profile knurled head thumb screws are available for immediate shipping from stock: Diameters ranging from M3 to M10 up to 35mm long in steel and stainless steel A2 and A4. To view or buy parts by clicking on the following link: DIN 653 flat low profile knurled head thumb screws
To view (or free download) the full specification and standard pdf sheet with dimension, material, weight, technical, chemical and mechanical properties click on the link at the top of page