Gibraltar G10-3018-D Fluted Knob 3 Inch Phenolic

Product Description

The GIBRALTAR G10-3018-D is a fluted knob with a 3-inch head diameter, designed for use as a hand-tightened fastening or adjustment knob in industrial, mechanical, and fabrication applications. Constructed from phenolic material with a glossy finish, this knob features a female insert threaded for a 1/2-13 hole size, allowing it to be threaded onto a stud or bolt. The phenolic body provides solid grip and durability under repeated manual operation. This type of knob is commonly installed by machinists, maintenance technicians, and fabricators on fixtures, jigs, clamps, and equipment panels where tool-free adjustment is needed.

This fluted knob is suited for light industrial and equipment assembly applications where a secure, hand-operable fastener is required. The female insert design makes it compatible with standard 1/2-13 threaded studs and bolts. The glossy phenolic finish resists minor chemical exposure and wear, making it appropriate for shop floor, machine tool, and general-purpose mechanical assemblies. It is sold individually as a single-piece unit.

Key Features

• 3-inch head diameter for positive hand grip without tools
• Female insert with 1/2-13 thread for standard stud or bolt mounting
• Phenolic construction for durability and chemical resistance
• Glossy finish for a clean appearance and surface hardness
• Fluted profile provides consistent grip in oily or dry hand conditions

Compatibility

Designed as a replacement or new-install fluted knob for equipment, fixtures, and machinery using 1/2-13 threaded studs or bolts in light industrial and mechanical assembly applications.

Installation Notes

Installation is performed by hand or with minimal tooling — thread the female insert onto a 1/2-13 stud until snug. Ensure the mating stud or bolt thread is clean and free of damage before installation. Do not use power tools to drive this knob, as over-torquing can crack the phenolic body. Verify thread engagement depth is sufficient for the load requirement of the application.