Gibraltar 845635-G Spoked Knob 4-point Cast Iron

Product Description

The GIBRALTAR 845635-G is a 4-point spoked knob designed for manual valve, machine, and industrial equipment adjustment applications. The knob is cast from iron and features a zinc finish for added surface protection. With a 2.5-inch head diameter and a 5/8-11 threaded stem hole, it provides a secure, positive grip for operators working in demanding shop-floor, HVAC mechanical, or plumbing service environments. The 4 spoke design distributes hand pressure evenly, reducing fatigue during repeated adjustments. Licensed tradespeople and industrial maintenance technicians commonly specify this style of control knob as a replacement or original component on valve actuators and panel controls.

This spoked knob is suited for use in light industrial, commercial mechanical, and trade service settings where a durable, hand-operated control point is required. It fits valves, threaded shafts, and control assemblies with a 5/8-11 thread specification. The cast iron construction makes it well-suited to environments where plastic knobs would crack or degrade under mechanical stress or temperature cycling. Typical installations include boiler room valve controls, HVAC air handler manual damper assemblies, and machine tool adjustment points.

Key Features

• 4-point spoked design provides firm grip and even hand-load distribution
• Cast iron construction withstands mechanical stress and elevated temperatures
• Zinc finish provides corrosion resistance on exposed surfaces
• 2.5-inch head diameter allows confident hand torque without tools
• 5/8-11 threaded hole fits standard threaded shafts and valve stems
• 1.125-inch hub diameter and 1.5-inch overall height suit compact panel and valve applications

Compatibility

Designed as an OEM-style replacement or new-installation control knob for equipment with a 5/8-11 threaded shaft, including valves, damper actuators, and industrial machine controls.

Installation Notes

Installation is typically performed by maintenance technicians, HVAC service professionals, or industrial mechanics. Thread the knob onto the 5/8-11 stem by hand, ensuring full thread engagement before applying torque. Shut off and de-energize any connected valve or actuator assembly before removing or installing the knob. Verify thread compatibility before installation to avoid cross-threading the cast iron hub.