Diamond Knurled Thumb Screws with Plastic Washer Stainless Steel Hand Twist Fasteners Tool-Free Adjustment Knurl Thumb Bolts

Our thumb screws adopt diamond knurled design on the head, which increases friction for convenient hand twisting without tools. Matched with a soft plastic washer, it effectively prevents scratches, abrasion and loosening on contact surfaces. Made of stainless steel, the fastener features outstanding rust resistance and stable mechanical performance to fit long-term operation in various environments. Perfect for photographic brackets, testing jigs, equipment panels, display stands and other assemblies requiring repeated disassembly and surface protection. Customizable options include thread specification, length, head size, washer material and surface treatment based on your drawings. We provide one-stop supporting services: custom labels, technical manuals, personalized packaging and component kitting. Strict quality inspection maintains consistent precision to simplify your procurement.