Worm Gear Clamp 5 in Max Steel Dundas Jafine MC5ZW 3-Pack Silver The Dundas Jafine MC5ZW Worm Gear Clamp is a heavy-duty steel hose clamp engineered for secure, vibration-resistant connections on hoses and ducts up to 5 inches in diameter. Featuring a robust slotted-band design and a corrosion-resistant silver zinc finish, it delivers consistent clamping force across a wide range of HVAC, automotive, and plumbing applications. The trapezoidal-thread screw ensures smooth, slip-free tightening and long-term retention?even under thermal cycling or pressure fluctuations. Sold in a 3-pack for multi-point installations or spare inventory, it?s ideal for professionals and DIYers seeking reliable, reusable fastening without specialized tools. Features - Heavy-gauge steel construction with zinc plating for rust resistance in humid or outdoor environments - 5 in maximum hose/duct compatibility?fits nominal 4?5 in OD tubing - Trapezoidal-thread screw enables high-torque, non-slip tightening with standard flathead or Phillips screwdrivers - Slotted band design allows for fine tension adjustment and accommodates irregular or ovalized hoses - Smooth inner edge prevents cutting or deforming soft rubber, PVC, or flexible aluminum ducting - Reusable?can be loosened, repositioned, and retightened without loss of integrity - Wide saddle distributes pressure evenly, reducing stress points on hose walls - Compatible with HVAC flex duct, dryer vents, radiator hoses, and irrigation lines - Meets general industrial standards for static and low-vibration fluid/air systems - Compact profile minimizes interference in tight mechanical bays or duct runs Specifications - Brand Name: Dundas Jafine - Model Name: Dundas Jafine MC5ZW - Part Number: MC5ZW - Product Type: Worm Gear Hose Clamp - Material: Steel - Finish: Zinc-Plated (Silver) - Max Hose Size: 5 in (OD) - Band Width: ~0.5 in (standard for 5 in class) - Screw Type: Slotted/Phillips Combo Head - Thread Type: Trapezoidal - Quantity: 3-Pack - Item Weight: ~0.6 lb total (estimated) - Country of Origin: China - UPC: 060672130818 - Global Trade Identification Number: 00060672130818 - Manufacturer: Dundas Jafine Inc. Product Application This clamp is commonly used by HVAC technicians, plumbers, and automotive mechanics to secure flex duct runs in residential attic installations, connect dryer exhausts to wall vents, or seal radiator and heater hoses in fleet maintenance. Its 5-inch capacity suits 4-inch nominal ducting with insulation sleeves or compression tolerance?critical for code-compliant airflow in energy-efficient builds. In agricultural and irrigation setups, it secures polyethylene tubing to fittings without kinking. The 3-pack format supports multi-joint assemblies (e.g., supply + return + bypass) or provides spares for service vans?ensuring readiness for on-site repairs with dependable, tool-accessible fastening.