Thumb Screw with Plastic Knob – Part C1568-F
This general-purpose thumb screw features a durable plastic knob for easy hand-tightening and a steel threaded insert for added strength and torque retention. Designed for use with 7/16″ bolts, it offers a secure grip without the need for tools—ideal for quick setups or adjustments.
For optimal performance, use with a 7/16″ washer to ensure proper slip torque and prevent thread damage.
Part Number: C1568-F
Material: Plastic knob with steel insert
Recommended Use: 7/16″ bolt and washer
Length: 1.5 in.
Width: 2 in. (approx.)
Shipping Weight: 2.5 lbs
This thumb screw is commonly used with Quick Clamp Parts.





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