Thumb Screw Specs:

Thread Diameter: 0.250" (1/4")
Thread Pitch: 20 (UNC)
Screw Length: 2.500" (2-1/2")
Fully Threaded: No
Minimum Thread Length: 1.000" (1")
Thread Material: 18-8 Stainless Steel

Knob Style: Knurled Round
Knob Color: Black
Knob Diameter: 0.750" (3/4")
Knob Height: 0.313" (5/16")
Knob Material: Acetal Plastic

All Thumb Screw Depot Products Are Proudly Built In The USA & Backed By A Hassle Free Lifetime Warranty.
Factory Direct Thumb Screws Are Built & Shipped The Same Business Day On Orders Placed By 2PM CST.
Visit Our Store For More Options, Including Hundreds Of Metric & Standard Thread Sizes, 4 Knob Styles, In 5 Colors: Red, Black, Yellow, Grey & White.
Thanks For Supporting An American Family Owned Small Business.