Do you know the difference between hex head and thumb wing screw clamps? Worm gear screw clamps offer a versatile clamping solution for hoses. Like all hose clamps, they apply pressure over barbed fittings and pipes. Even if the hose itself is pressurized, the hose clamp will prevent it from leaking.
Worm screw clamps feature a screw that works as a worm drive. As you turn the screw clockwise, the band diameter will shrink. This shrinkage creates pressure that squeezes the end of the hose against the barbed fitting or pipe. Worm screw clamps, however, are available in different screw styles, such as hex head and thumb wing.
What Are Hex Head Worm Screw Clamps?
Hex head worm gear screw clamps are characterized by a hexagonal, six-sided head. All worm screw clamps have a screw. As previously mentioned, it’s used to tighten the band and apply pressure. Hex head worm screw clamps live up to their namesake by featuring a screw with a hexagonal head.
You can tighten a hex head worm screw clamp using a wrench or socket that supports hexagonal fasteners. Placing the tool around the screw head and turning it clockwise will result in a tighter fit. Conversely, turning the screw head counterclockwise will result in a looser fit.
What Are Thumb Wing Worm Screw Clamps?
Thumb wing worm screw clamps are characterized by a wing-like gripping surface on the screw head. Known as “wings,” it allows users to tighten and loosen them by hand. Rather than using a tool, you can simply grab and turn the wings.
Differences Between Hex Head and Thumb Wing Worm Screw Clamps
Hex head and thumb wing worm screw clamps use different installation methods. The former requires a tool like a wrench or socket, whereas the latter does not — you can install thumb wing worm screws entirely by hand.
Because they require a tool to install, hex head worm screws allow for greater torque. You can apply more torque when installing them via the tool. This typically results in a tighter fit to minimize the risk of hose leaks.
Hex head worm screw clamps are better protected from vibrations. Vibrations can cause fasteners to loosen over time. With hex head worm screw clamps, you can use more torque during installation to create stronger friction between the band and the hose itself. The end result is better protection from vibrations.
Thumb wing worm screws, on the other hand, are easier to loosen and remove. Hoses often require replacing. Assuming a hose has a thumb wing worm screw clamp, you can remove it using your hand. You don’t have to find or use any tools, making thumb wing worm screw clamps a popular choice for hoses that require frequent maintenance or replacing.
