Gibraltar G10-2890-B Knurled Fluted Knob 2.5 in Plastic

Product Description

The GIBRALTAR G10-2890-B is a knurled fluted knob with a 2.5-inch head diameter and a plastic body. It features a female insert threaded to accept a 3/8-16 fastener, making it a standard hand-tightening control knob for use in machinery, fixtures, and industrial equipment. The knurled and fluted outer surface provides secure finger grip without tools. This knob is installed by maintenance technicians, machine builders, and tradespeople who need a reliable, tool-free adjustment or clamping knob in a variety of mechanical assemblies.

This knob is suited for use in light industrial, commercial, and trade applications where hand-operated adjustments are required. Typical install scenarios include machine guards, panel assemblies, jig fixtures, enclosures, and equipment that requires frequent manual loosening and tightening. The plastic construction keeps weight low and resists corrosion in environments where metal hardware would be prone to oxidation.

Key Features

• 2.5-inch head diameter for positive hand grip
• Knurled and fluted outer surface for tool-free tightening
• Plastic construction — lightweight and corrosion resistant
• Female insert threaded 3/8-16 for standard fastener compatibility
• Compact single-piece design suits panel and fixture mounting

Compatibility

Designed as a standard replacement or new-installation hand knob for mechanical assemblies, fixtures, and equipment using 3/8-16 threaded fasteners.

Installation Notes

Installation requires no special tools — thread the knob onto a 3/8-16 stud or bolt by hand. Ensure the mating thread is clean and free of debris before installation. Do not use a wrench or power tool to drive the knob, as the plastic body can crack under excessive torque. Verify thread engagement is sufficient for the load requirements of the assembly before placing the equipment in service.