1 3/4" 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" Thumb Screw Bolts with Red Butterfly Tee Wing Knob - 18-8 Stainless Steel Description: These 3/8" thumb screw bolts come with a red butterfly tee wing knob, crafted from durable 18-8 stainless steel for longevity and corrosion resistance. Available in multiple size options, these bolts are ideal for applications that require frequent adjustments and tool-free hand tightening. Designed with an ergonomic butterfly wing knob, they re perfect for use in tight spaces. Key Features: Size Options: Available in lengths of 3/4", 1", 1 1/4", 1 1/2", 2", 2 1/2", and 3" Standard Coarse Thread: 3/8"-16 thread for reliable, secure fastening Butterfly Tee Wing Knob: Red ergonomic knob for comfortable, slip-resistant grip Durable Material: 18-8 stainless steel ensures rust resistance and durability Benefits: Prevents over-tightening, ideal for setups needing frequent removal and reinstallation Simplifies maintenance in applications requiring regular inspection Perfect for industrial and DIY projects, these thumb screw bolts provide a secure and easy-to-use clamping solution across a variety of applications. - Head Type: Tee Head - Head Type: Tee Head