Gibraltar ALH-29MT-G Lobed Knob 4-point Aluminum M16x2

Product Description

The GIBRALTAR ALH-29MT-G is a 4-point lobed knob machined from 6063-T5 aluminum, designed for manual adjustment and clamping applications in industrial, mechanical, and fabrication settings. The knob features a 76.2 mm head diameter and an M16 x 2 threaded stem, providing a secure, ergonomic grip for hand-tightening without tools. With a hub diameter of 32 mm and an overall height of 31.80 mm, this knob suits applications where precise hand control and a compact footprint are required. Machinists, fabricators, and equipment assemblers install this type of hardware on jigs, fixtures, and adjustable machine components.

This lobed knob is suited for light to medium-duty manual adjustment applications across industrial machinery, production equipment, and custom fabrication assemblies. The aluminum construction keeps weight low while providing sufficient rigidity for repeated hand-tightening cycles. It is typically used in environments where corrosion resistance and a clean appearance are priorities, such as food processing equipment, laboratory fixtures, and general manufacturing jigs.

Key Features

• 4-point lobed profile for secure hand grip and tool-free adjustment
• Machined from 6063-T5 aluminum for light weight and corrosion resistance
• 76.2 mm head diameter provides generous gripping surface
• M16 x 2 threaded stem for compatibility with standard metric fastener patterns
• Hub diameter of 32 mm and hub height of 15.90 mm for stable seating against mating surfaces
• Overall height of 31.80 mm keeps the profile compact in tight assemblies

Compatibility

Designed as a replacement or upgrade lobed knob for industrial jigs, fixtures, and adjustable assemblies using M16 x 2 threaded inserts or studs.

Installation Notes

This knob is installed by hand onto an M16 x 2 male threaded stud or into a female threaded bore. Verify thread engagement depth against the hub height before final assembly to ensure the knob seats flush against the mating surface. Do not use power tools to drive this knob, as over-torquing can damage the aluminum threads. No special certifications or trade licenses are required for installation of manual hardware knobs.