FINE THREAD 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 5/16"-24 Thumb Screw T Bolts with Red Wing Knob Fine Thread 304 Stainless Steel Hand Grip Fasteners for Machinery Fixtures (Choose Length & Pack Size). These 5/16"-24 fine-thread thumb screw T-bolts feature durable red wing knobs designed for smooth, one-hand adjustments. Made from 304 stainless steel, they resist corrosion and wear, providing long-lasting strength for indoor and outdoor use. The red Delrin plastic knob offers excellent resistance to oil, grease, and solvents while ensuring a secure, comfortable grip. Perfect for tool-free assembly, access panels, fixtures, and machinery adjustments. Key Features: Thread Size: 5/16"-24 UNF (Fine Thread / 24 TPI). Material: 18-8 / 304 Stainless Steel — rust-resistant and durable. Knob Type: Red Delrin Plastic Tee Wing Knob (1-1/2" diameter × 7/16" thick). Available Lengths: 1/2", 3/4", 1", 1 1/4", 1 1/2", 2", 2 1/2". Use Cases: Quick-adjust fastening for equipment panels, fixtures, controls, and DIY projects. Operation: Easy hand tightening and removal — no tools needed.