3/8" x 3 1/2" Thumb Screws with Black Round Fluted Clamping Knob - 18-8 Stainless Steel with Ergonomic Plastic Cap These high-quality 3/8" x 3 1/2" thumb screws feature a durable round fluted clamping knob designed for an easy, ergonomic grip. The black plastic cap provides added comfort and control, making these thumb screws perfect for tool-free adjustments in a variety of applications. Constructed from 18-8 stainless steel, these screws offer excellent corrosion resistance, ensuring long-lasting durability and reliability, even in challenging environments. The 6-point hex head design enhances grip, allowing for secure tightening without the need for additional tools, making these thumb screws ideal for quick and efficient use. With a 3/8"-16 coarse thread, these screws are perfect for clamping, fastening, and securing components with ease. Whether you're in need of rust-resistant hardware for your next project or require ergonomic thumb screws for comfortable grip and tool-free adjustments, these 18-8 stainless steel thumb screws are the perfect choice for reliable and efficient performance. Features: Durable 18-8 Stainless Steel construction for rust and corrosion resistance. Ergonomic black plastic cap for added comfort and easy hand grip. 6-point hex head design for secure fastening without tools. 3/8"-16 coarse thread for a precise fit and reliable performance. Tool-free adjustments for quick, efficient, and comfortable use. Perfect for home improvement, automotive, and industrial applications, these thumb screws are a must-have for anyone seeking high-quality, ergonomic, and rust-resistant fasteners.