{"product_id":"gibraltar-kn8c-b7-l-21-g-ball-knob-female-insert","title":"Gibraltar KN8C--B7-L-21-G Ball Knob Female Insert","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GIBRALTAR KN8C--B7-L-21-G is a thermoplastic ball knob with a female insert mount designed for use on threaded shafts, rods, and machine controls. The knob measures 1-7\/8 inches in diameter and 1-3\/4 inches in height, with a 9\/16-inch hole depth sized for a 1\/2-13 thread insert. The smooth grip surface and durable thermoplastic construction make it suitable for equipment panels, jigs, fixtures, and light industrial machinery where a reliable, easy-to-operate hand knob is required. Machinists, maintenance technicians, and equipment assemblers are the primary installers of this hardware.\u003c\/p\u003e\n\u003cp\u003eThis ball knob is appropriate for general industrial and mechanical applications where a threaded female insert style is needed to mate with a 1\/2-13 male threaded stud or shaft. Typical use cases include machine tool guards, control panels, enclosures, and fabricated fixtures in shop or industrial environments. The black thermoplastic body offers resistance to routine handling and light chemical exposure common in these settings.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eFemale insert mount accepts 1\/2-13 threaded studs or rods\u003c\/li\u003e\n  \u003cli\u003e1-7\/8 inch diameter provides a comfortable hand grip surface\u003c\/li\u003e\n  \u003cli\u003e9\/16 inch hole depth gives adequate thread engagement for secure fastening\u003c\/li\u003e\n  \u003cli\u003eSmooth grip profile suits applications where gloves or bare hands are used\u003c\/li\u003e\n  \u003cli\u003eThermoplastic construction is lightweight and corrosion resistant\u003c\/li\u003e\n  \u003cli\u003eBlack color finish for a clean, standard industrial appearance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with 1\/2-13 threaded shafts and studs in general industrial, machine tool, and fixture assembly applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by threading the knob onto a compatible 1\/2-13 male stud by hand. Ensure the stud length does not exceed the 9\/16 inch hole depth to avoid bottoming out before the knob seats fully. De-energize and lock out any machine before servicing or replacing knobs on active equipment. No special tools are required for standard hand-tightened installations.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMount Type\u003c\/strong\u003e: Female Insert\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/2-13\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eKnob Material\u003c\/strong\u003e: Thermoplastic\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter\u003c\/strong\u003e: 1-7\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e: 1-3\/4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHole Depth\u003c\/strong\u003e: 9\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGrip Type\u003c\/strong\u003e: Smooth\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor\u003c\/strong\u003e: Black\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1 pound\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: KN8C--B7-L-21-G\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GIBRALTAR","offers":[{"title":"Default Title","offer_id":51716306469170,"sku":"KN8C--B7-L-21-G","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/815dc0fd8c9097aa7e83a1b591230751.jpg?v=1788524143","url":"https:\/\/voomisupply.com\/products\/gibraltar-kn8c-b7-l-21-g-ball-knob-female-insert","provider":"Voomi Supply","version":"1.0","type":"link"}