Gibraltar 5J55A205A8Z001G Lobed Knob 3-point 1/4-20

Product Description

The GIBRALTAR 5J55A205A8Z001G is a 3-point lobed knob molded from thermoplastic elastomer for a firm, comfortable grip in hand-tightening applications. With a head diameter of 2.17 inches and a 1/4-20 threaded hole, this knob installs directly onto threaded stems or bolts without tools. The hub diameter measures 0.81 inches with a hub height of 0.15 inches and an overall height of 1.08 inches. Thread engagement depth is 0.91 inches, providing secure fastening in panel, enclosure, and equipment assembly applications. It is commonly installed by HVAC technicians, electricians, and mechanical equipment assemblers during panel assembly or field service work.

This lobed knob is suited for use on control panels, electrical enclosures, HVAC equipment access covers, and general industrial or commercial mechanical assemblies requiring tool-free adjustment or secure hand-tightened fastening. Its thermoplastic elastomer construction offers resistance to light impact and provides a non-slip grip surface. The black finish gives a clean, professional appearance on finished equipment. Typical installations involve threaded studs or machine screws in panel-mount configurations across residential and light commercial applications.

Key Features

• 3-point lobed design provides positive grip for hand-tightening without tools
• Thermoplastic elastomer construction offers durability and a non-slip grip surface
• 2.17-inch head diameter for comfortable, secure hand operation
• 1/4-20 threaded hole with 0.91-inch thread depth for reliable fastening
• Compact overall height of 1.08 inches fits tight panel and enclosure clearances
• Black finish suitable for visible panel and equipment installations

Compatibility

Designed for use with 1/4-20 threaded stems, studs, or machine screws in panel, enclosure, and mechanical equipment assembly applications.

Installation Notes

This knob is installed by hand onto a 1/4-20 threaded fastener and requires no special tools. Ensure the mating thread is clean and undamaged before installation to avoid cross-threading. Do not use power tools or excessive torque, as the thermoplastic elastomer hub can be damaged by over-tightening. De-energize any electrical panel or enclosure before servicing components in the vicinity of this knob.