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The GIBRALTAR KNH4-HEXRT5--- is a three-arm control knob designed for use on threaded fastener assemblies and panel-mounted hardware requiring a secure, hand-operated grip. The knob features a through hex hole sized for M6 hardware, a 2-inch head diameter, and stands 1.1 inches overall in height. Constructed from matte-coated polypropylene in black, it delivers a firm grip surface suitable for repeated adjustments in equipment enclosures, control panels, machinery guards, and similar trade applications. Technicians and installers reach for this style of knob when tool-free hand tightening and quick release are required in tight spaces.
This knob is suited for light industrial, electrical panel, HVAC equipment enclosure, and general mechanical assembly applications where a hand-adjustable fastener point is needed. The three-arm radial design distributes grip force evenly, making it practical for frequent loosening and re-tightening without tools. Its compact 2-inch head diameter keeps it viable in panel-dense installations where clearance is limited.
Designed as a general-purpose three-arm knob for M6 threaded through-hex fastener applications in equipment enclosures, control panels, and light industrial assemblies.
Installation requires no special tools — the knob is pressed or threaded onto an M6 hex fastener by hand. Ensure the mating hardware thread and hex size are confirmed before installation. De-energize or power down any panel or enclosure before accessing internal fastener points. Do not overtighten, as polypropylene arms can crack under excessive torque.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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