American Valve worm gear hose clamps are type F and numbered based on SAE standardization diameter ranges. They are for general purpose plumbing applications.
The band and housing are stainless steel and the screws are zinc plated carbon steel with 5/16" Hex Heads.
Simple screw tightening method creates a strong clamp force that will not shake loose
Good for many applications such as bundling or sealing air and fluid hose lines
Adjusts from 4-1/16-in up to 5-in
The recommended installation screw torque is 30-40 lbs/in (3.4 - 4.5 Nm)