Gibraltar G10-3040AH Phenolic 3 Arm Knob 2 in 3/8-16

Product Description

The GIBRALTAR G10-3040AH is a glossy coated phenolic 3-arm knob designed for use on threaded fastener applications requiring a secure, hand-operable grip. The knob features a 2-inch head diameter and stands 1 inch in overall height, with a female insert style threaded hole sized at 3/8-16. The black phenolic construction offers durability and resistance to common shop and field environments. This type of knob is commonly installed by technicians and tradespeople wherever a tool-free adjustment or clamping point is needed on equipment, jigs, fixtures, or enclosures.

This knob is suited for light industrial, HVAC, electrical enclosure, and general equipment applications where hand-tightening is preferred over tool-driven fasteners. The 3-arm profile provides solid grip surface in confined or repetitive-adjustment scenarios. The female insert accepts a 3/8-16 threaded stud or bolt, with a hub diameter of 3/4 inch and a hole depth of 1/2 inch. It is sold individually and is appropriate for panel assemblies, access covers, and adjustable component mounts.

Key Features

• 2-inch head diameter for a comfortable hand grip
• 3/8-16 female threaded insert for standard fastener compatibility
• 1/2-inch hole depth accommodates typical stud engagement lengths
• 3/4-inch hub diameter for centered, stable mounting
• Glossy black phenolic construction resists oils and common chemicals
• 3-arm design provides secure grip in tight spaces

Compatibility

Designed as a standard female-insert 3-arm knob for use with 3/8-16 threaded studs or bolts on equipment panels, fixtures, and enclosures requiring tool-free hand adjustment.

Installation Notes

Installation requires a 3/8-16 threaded stud or bolt projecting from the mounting surface. Thread engagement should not exceed the 1/2-inch hole depth to avoid bottoming out the insert. Ensure the mating thread is clean and free of debris before seating the knob. Hand-tighten only — do not use power tools, as overtorquing can crack the phenolic body.