{"product_id":"gibraltar-1rm8b921a8z001g-fluted-knob-1-4-20-threaded-stem","title":"Gibraltar 1RM8B921A8Z001G Fluted Knob 1\/4-20 Threaded Stem","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GIBRALTAR 1RM8B921A8Z001G is a fluted knob with a threaded stem, designed for manual adjustment and control applications across industrial, mechanical, and light equipment settings. The knob features a 1.87-inch head diameter and a 1\/4-20 threaded stem with 0.5 inches of thread engagement length. The body is molded from thermoplastic elastomer, which provides a firm yet comfortable grip surface. Technicians and assemblers use this style of knob wherever tool-free hand adjustment is required on threaded fastener points, jigs, fixtures, or equipment panels.\u003c\/p\u003e\n\u003cp\u003eThis fluted knob suits a broad range of applications including HVAC equipment panels, electrical enclosures, industrial machinery, and shop fixtures where a secure hand-tightened connection is needed. The 1\/4-20 threaded stem is a standard unified coarse thread, making it compatible with widely available threaded inserts and studs. The compact hub profile and defined fluting pattern allow confident grip even in gloved-hand conditions typical of trade service environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1.87-inch head diameter for a confident hand grip without tools\u003c\/li\u003e\n  \u003cli\u003e1\/4-20 threaded stem with 0.5-inch thread length for standard fastener compatibility\u003c\/li\u003e\n  \u003cli\u003eThermoplastic elastomer construction provides durability and grip texture\u003c\/li\u003e\n  \u003cli\u003e1.5-inch hub diameter and 0.22-inch hub height for low-profile mounting\u003c\/li\u003e\n  \u003cli\u003e2.44-inch head height suits applications requiring added knob clearance\u003c\/li\u003e\n  \u003cli\u003eLightweight at 0.16 pounds, suitable for panel and fixture use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or standard hardware component for equipment and fixtures using 1\/4-20 threaded stems requiring manual hand-adjustment knobs.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation does not require specialized tools — thread the knob stem onto a compatible 1\/4-20 stud or insert by hand. Before installing on powered equipment, de-energize the system and follow applicable lockout\/tagout procedures. Verify thread engagement depth against the 0.5-inch stem length to avoid bottoming out on blind threaded holes. Do not use power tools to drive this knob onto the threaded interface.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Diameter\u003c\/strong\u003e: 1.87 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Height\u003c\/strong\u003e: 2.44 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHub Diameter\u003c\/strong\u003e: 1.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHub Height\u003c\/strong\u003e: 0.22 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStem Size\u003c\/strong\u003e: 1\/4-20\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eKnob Material\u003c\/strong\u003e: Thermoplastic Elastomer\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.16 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: GIBRALTAR\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 1RM8B921A8Z001G\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GIBRALTAR","offers":[{"title":"Default Title","offer_id":51689433497906,"sku":"1RM8B921A8Z001G","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/465dcdb9de9d09dcf36500abb96bbcc9.jpg?v=1788259450","url":"https:\/\/voomisupply.com\/products\/gibraltar-1rm8b921a8z001g-fluted-knob-1-4-20-threaded-stem","provider":"Voomi Supply","version":"1.0","type":"link"}