Hose Clamp Norma 16–27 mm, stainless steel adjustable worm-drive, pack of 25

Norma worm-drive hose clamp with an adjustable stainless steel band designed for clamping hoses and tubes with a diameter range of 16–27 mm. The clamp uses a worm-gear screw mechanism to provide uniform compression and a reliable seal. Supplied as a pack of 25, this item is intended for applications that require corrosion resistance, repeated adjustment and secure fastening of flexible connections in plumbing, automotive, HVAC and workshop environments.

Advantages

The stainless steel construction ensures resistance to rust and extends service life in damp or outdoor conditions. The worm-drive screw allows fine adjustment across the 16–27 mm range for consistent clamping pressure and tight seals. Supplied in a multi-pack, the clamps offer cost-effective replacement and the ability to fit multiple hoses at once. The simple design enables quick installation with common screwdrivers or nut drivers.

Suitable for

• Securing coolant and fuel hoses in automotive maintenance
• Fastening flexible hoses in plumbing and drainage systems
• Connecting ducting and hoses in HVAC installations
• General workshop and machinery hose retention

Key specifications

• Clamping diameter range: 16–27 mm
• Material: stainless steel band and housing
• Adjustment type: worm-drive screw mechanism
• Drive head: slotted/flat or compatible screw head for common screwdrivers
• Quantity: pack of 25

How to use

Position the clamp over the hose end so the band sits evenly around the connection. Turn the worm-drive screw clockwise to tighten until the clamp provides a firm seal without crushing the hose. To loosen or remove, turn the screw counterclockwise. Use a properly sized screwdriver or nut driver and avoid over-tightening to prevent damage to the hose or clamp threads. Inspect the sealed joint after initial pressurization and re-torque if necessary.

Usage recommendations

For best performance, select a clamp where the nominal hose diameter falls well within the 16–27 mm range rather than at the extreme limits. For high-vibration or high-pressure applications, inspect clamps periodically and replace if signs of corrosion or thread wear appear.