Gibraltar ALHA-8M-G Lobed Knob Aluminum M12x1.75

Product Description

The GIBRALTAR ALHA-8M-G is a 4-point lobed knob machined from 6063-T5 aluminum, designed for tool-free manual adjustment on threaded assemblies. With a 63.5 mm head diameter and an M12 x 1.75 threaded stem extending 76.2 mm, this knob provides secure grip and reliable clamping force in applications where fasteners are frequently repositioned by hand. The 6063-T5 alloy grade offers a solid balance of strength and corrosion resistance, making it suitable for both indoor and light industrial environments. Technicians and fabricators working with machine guarding, fixtures, jigs, or adjustable equipment will find this a straightforward drop-in hardware solution.

This lobed knob is suited for use on machine tools, workholding fixtures, enclosures, and adjustable industrial equipment where hand-tightened fastening is required. The M12 x 1.75 thread is a standard metric coarse pitch, compatible with a wide range of metric threaded hardware. It is appropriate for both light-duty and moderate-duty clamping scenarios across manufacturing, maintenance, and equipment assembly applications.

Key Features

• 4-point lobe profile for positive hand grip during tightening and loosening
• 63.5 mm head diameter provides ample torque leverage without tools
• M12 x 1.75 metric coarse thread stem for broad hardware compatibility
• 76.2 mm thread length accommodates thicker panels and stacked assemblies
• 6063-T5 aluminum construction for lightweight strength and corrosion resistance

Compatibility

Designed as an OEM-style and aftermarket replacement lobed knob for use with M12 x 1.75 threaded studs, bolts, or inserts on industrial machinery, fixtures, and adjustable equipment.

Installation Notes

Installation requires no special tools — thread the knob onto a compatible M12 x 1.75 male stud or threaded insert by hand. Ensure the mating thread is clean and free of debris before installation to avoid cross-threading. Do not use impact tools or wrenches on the lobe profile, as this may damage the aluminum knob body. Follow applicable equipment manufacturer guidelines for clamping torque requirements on the assembly being serviced.