Norma Hose Clamp
Representative Photo, actual item may vary
Norma 9424 Stainless Steel Lined Worm-Drive Hose Clamps SAE 24 1-1/16" to 2" (Pack of 10)
Representative Photo, actual item may vary
Norma Hose Clamps: Decades of OEM-Trusted Clamping Precision
When it comes to hose clamps, few names carry as much engineering heritage as Norma. Hose clamps might be among the most humble components in any engine bay, but they bear enormous responsibility — securing coolant lines, fuel hoses, intake ducts, and more against pressure, heat, and vibration. Norma has spent over seven decades perfecting these small but critical fasteners, and the results are trusted by OEM manufacturers and workshop professionals worldwide.
The TORRO® Series: A Benchmark in Worm-Drive Design
At the heart of Norma's hose clamp lineup is the iconic TORRO® worm-drive clamp — widely regarded as the gold standard for worm-drive hose clamps across many industries. What sets the TORRO® apart is its asymmetrical housing design, which provides high clamping force, superior torque resistance, and even distribution of clamping pressure across the full perimeter of the hose. This means a tighter, more reliable seal without stress points that can damage hose material over time.
The TORRO® is available in a broad range of clamping widths conforming to DIN 3017, making it adaptable to virtually any automotive application — from intake and cooling systems to fuel lines and exhaust connections. Norma produces approximately six million TORRO® clamps per week, a testament to global demand for this proven design.
Heavy-Duty Options for Demanding Applications
Beyond the TORRO®, Norma offers heavy-duty hose clamp variants engineered for more extreme environments. The TORRO® WF (wave spring) variant incorporates a compression spring to maintain constant tension even as hoses expand and contract due to thermal cycling — a critical feature for turbocharged engines and charged air systems. For applications requiring maximum band tensile force, the GBS heavy-duty clamp handles sealing on suction and pressure lines with plastic or steel reinforcements and high-durometer hoses.
Norma's heavy-duty clamps are produced in multiple styles — including standard and spring-loaded versions — and are available in a full range of diameter sizes and material grades, including stainless steel options for corrosion-prone environments.
Why Norma Hose Clamps Stand Apart
- OEM Pedigree: Over 90% of European vehicle manufacturers rely on NORMA clamps, meaning these are not aftermarket approximations — they are the same parts found on vehicles from the factory floor.
- Precision Engineering: The asymmetrical TORRO® housing ensures even clamping pressure and a high failure torque threshold, protecting both the clamp and the hose it secures.
- Broad Coverage: With an extensive portfolio of joining solutions, Norma offers the right clamp for cooling systems, fuel lines, induction systems, and general hose fastening across cars and commercial vehicles.
- Easy Installation: Norma worm-drive clamps require no special tools and are engineered for fast, reliable assembly — whether in a professional shop or a home garage.
- Material Quality: Norma uses premium materials throughout its clamp range, delivering durability and long-term reliability even under sustained pressure and vibration.
Whether you're replacing a worn coolant hose clamp or building out a performance intake system, Norma's hose clamp selection covers the full range of automotive needs. Browse the complete Norma brand catalog or explore all hose clamp options to find the right fit for your application.