ENG 
TR 
DE 
T-Bolt Clamp vs Worm Drive Clamp
A worm-drive clamp and a T-bolt clamp both hold a hose on a fitting, but they are not interchangeable. The worm-drive band is tightened by a screw housing. It is compact, easy to adjust in the field and suited to lighter hoses. A T-bolt uses a threaded bolt and trunnions, so the load around the hose is higher and more even.
Choose the AK worm-drive clamp for general hose connections that are opened often and do not see high boost or a soft silicone cover. Choose the TB T-bolt clamp for charge-air, turbo and other large-diameter hoses, where the cover can cold-flow if the band bites in one spot.
Diameter range still comes first. Match the closed and open size to the assembled hose, then match the duty. If the line cycles in temperature, look at a spring-loaded T-bolt instead of a fixed band.
More articles
What Is a V-Band Clamp?
A V-band clamp joins flanged pipes with a quick, reusable seal used on exhaust, turbo and DPF connections.
Read more
How to Choose a Hose Clamp
Match diameter, band width, torque and temperature before choosing a T-bolt, spring-loaded or worm-drive hose clamp.
Read more
Clamps for Exhaust and DPF Systems
Exhaust and DPF joints need clamps that stay sealed under heat, pressure and vibration.
Read more
How to Measure a V-Band Clamp
Size a V-band clamp from the flange it grips, not from the pipe bore or the outside of the band.
Read more
Spring-Loaded T-Bolt Clamps for Hot Hoses
A spring-loaded T-bolt keeps clamp load when a silicone or charge-air hose grows and shrinks with heat.
Read more