Thumb Screw

Thumb screws are designed for manual tightening and loosening without the need for tools. Their heads feature ergonomic grips—including winged, knurled, or tall flat profiles — that provide comfortable finger traction for frequent adjustments, positioning, and clamping in applications where speed and convenience are essential.

Available Types

Type	Description
Type A (with shoulder)	Features a shoulder between head and threads; provides positive stop and bearing surface
Type B (no shoulder)	Direct thread engagement from head to tip; simpler profile
Knurled Thumb Screw	Diamond or straight knurled head for secure grip; most common style
Knurled with Washer Face	Knurled head with integral washer face for increased bearing surface
Large Panel Thumb Screw	Oversized head for maximum grip; ideal for panels and covers
Hex Head Thumb Screw	Combines manual operation with hex drive option for additional torque when needed
Standard Plastic Head	Molded plastic head over metal insert; lightweight and non-marring