1 1/2" Wide Clamping Knob. Thickness: 7/16" Has an ergonomic sturdy grip for fast adjustment without a wrench. The ergonomic grip provides strong torque and easy manual operation. 304 Stainless Steel Bolts – highly resistant to corrosion and rust, making them ideal for both indoor and outdoor use, even in harsh environments or areas exposed to moisture. Durable and long-lasting for secure fastening. Versatile Design – Ideal for machinery, plates, panels, jigs, fixtures, and DIY projects; provides quick hand installation and removal for tool-free adjustments in shop, home, or field use. Acetyl Thermoplastic Knob – Hard, durable, chemical- and moisture-resistant material offers lightweight, non-conductive performance for easy tightening. Built in USA by Family-Owned Small Business, Backed by a Lifetime Warranty 3/8" x 1 Inch Thumb Screw Bolts with Round Fluted Plastic Hand Grip - Stainless Steel Description: These 3/8" x 1 inch thumb screw bolts feature a round, fluted plastic hand grip designed for easy clamping and hand adjustments Constructed from 18-8 stainless steel, these bolts offer durability and corrosion resistance The black thermoplastic knob, molded from heavy-duty delrin plastic, measures 1 1/2 inches wide by 7/16 inches thick, providing a comfortable, slip-resistant grip that does not interfere with bolt length Key Features: Standard Coarse Thread: 3/8"-16 thread ensures secure and reliable fastening Round Fluted Knob: Comfortable hand grip for tool-free tightening and loosening High- Materials: Stainless steel bolt with a heavy-duty, glossy delrin plastic knob Molded in California: Knob manufactured with precision for durability and efficiency Ideal for applications requiring quick adjustments, these thumb screw bolts provide a practical solution for clamping, fastening, and removal tasks across various projects - Head Type: Tee Head Ideal for applications where cable protection or spacing is essential Easy installation with a press-fit design Pack options available for flexibility Designed for use in automotive, home, or industrial setups