Parker 97HC-3 Worm Gear Clamp Stainless Steel Band

Product Description

The PARKER 97HC-3 is a worm drive gear clamp designed for securing hose connections in plumbing, HVAC, and fluid-handling applications. It features a stainless steel band with a brass housing and accepts a 0.25-inch hex drive for installation with a standard nut driver or hex bit. The clamp adjusts from a minimum diameter of 0.25 inches up to a maximum of 0.62 inches, making it suitable for small-diameter hose and tubing work. The stainless steel band resists corrosion in wet or humid environments, and the brass housing provides durable thread engagement over repeated service cycles. Sold individually.

This clamp is used wherever a small-diameter hose or soft tubing connection requires a secure, leak-resistant seal. Typical applications include low-pressure water lines, condensate drain tubing, fuel lines, and cooling system hoses in both residential and light commercial equipment. Plumbers, HVAC technicians, and general mechanical trades install this clamp during new construction, equipment commissioning, and repair service. Its compact size and hex-drive design make it well suited for tight access areas where larger clamp tools cannot reach.

Key Features

• Worm drive design with 0.25-inch hex drive accepts standard nut drivers and hex bits
• Stainless steel band resists corrosion in wet and high-humidity environments
• Brass housing provides strong, durable thread engagement
• Adjustable diameter range: 0.25 inches minimum to 0.62 inches maximum
• Band width of 0.31 inches distributes clamping force evenly across the hose
• RoHS compliant

Compatibility

Designed as an OEM-style replacement or service clamp for small-diameter hose and tubing connections requiring a worm drive clamp in the 0.25-inch to 0.62-inch diameter range.

Installation Notes

Installation is performed by plumbing and HVAC trades as part of hose connection service or replacement. Shut off fluid flow and relieve any system pressure before removing or installing hose clamps. Use a nut driver or hex bit sized to 0.25 inches to tighten the worm drive screw. Do not overtighten on soft tubing materials, as excessive torque can cut into the hose wall and cause leaks.