Gibraltar G10-3035BG Phenolic 3 Arm Knob Black

Product Description

The GIBRALTAR G10-3035BG is a glossy coated phenolic three-arm knob designed for manual adjustment and control applications across HVAC, plumbing, electrical, and general equipment service. The knob features a 1.5-inch head diameter and stands 1.25 inches high, with a 0.75-inch long threaded stem sized at 5/16-18 thread pitch. The hub diameter measures 0.625 inches. Construction is phenolic with a glossy black finish, offering solid grip and resistance to moderate heat and chemicals typical of trade environments. Technicians and installers use this knob as a hand-tightened fastening or adjustment control on panels, valves, equipment enclosures, and service components.

This knob is suited for residential and light commercial applications where a tool-free, hand-operable control point is needed. The threaded stem style allows direct installation onto a matching 5/16-18 threaded stud or shaft. Common install scenarios include equipment access panels, damper controls, junction enclosures, and adjustable component mounts where repeated manual operation is expected. The three-arm profile provides positive grip without tools.

Key Features

• 1.5-inch head diameter for a comfortable three-arm grip
• 5/16-18 threaded stem for direct installation on standard threaded shafts
• 0.75-inch thread length accommodates typical panel and bracket thickness
• Glossy coated phenolic construction resists moderate heat and chemical exposure
• Black finish with 0.625-inch hub diameter
• Threaded stem style allows tool-free hand installation and removal

Compatibility

Designed as a replacement or service knob for equipment and enclosures using a standard 5/16-18 threaded stud or shaft with clearance to accept a 1.5-inch head diameter knob.

Installation Notes

Installation does not require special tools - thread the knob onto a 5/16-18 stud by hand until snug. Power down or de-energize any equipment before accessing internal panels or controls where this knob is being installed or replaced. Confirm thread engagement depth against the 0.75-inch thread length before applying operating loads. Follow applicable equipment manufacturer guidelines for torque or locking requirements if the application demands secure retention under vibration.