{"product_id":"jergens-21110-lobed-knob-4-point-aluminum-1-1-2-in","title":"Jergens 21110 Lobed Knob 4 Point Aluminum 1-1\/2 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe JERGENS 21110 is a four-point lobed knob machined from 319-grade aluminum, designed for hand-tightening and manual adjustment applications across industrial, mechanical, and light fabrication environments. With a 1-1\/2 inch head diameter and a 3\/8-16 threaded hole, it provides a firm, ergonomic grip without requiring tools. The overall height measures 7\/8 inch, and the head thickness is 3\/8 inch. This knob is typically installed by maintenance technicians, machinists, and assembly personnel who need reliable, repeatable hand-adjusted fastening points on fixtures, jigs, panels, or equipment enclosures.\u003c\/p\u003e\u003cp\u003eThe JERGENS 21110 suits a wide range of manual adjustment and clamping setups in industrial and commercial settings. It is well matched for use on machine tool fixtures, enclosure panels, control assemblies, and adjustable mechanical components where tool-free operation is required. The 3\/8-16 thread is a common unified coarse pitch, making this knob compatible with standard threaded hardware used in general industrial assembly. It is lightweight at 0.03 pounds, making it practical for applications where added mass is a concern.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eFour-point lobed profile provides positive grip for tool-free hand tightening\u003c\/li\u003e\n\u003cli\u003e319-grade aluminum construction offers corrosion resistance and low weight\u003c\/li\u003e\n\u003cli\u003e3\/8-16 threaded hole with 5\/8 inch thread depth accommodates standard UNC fasteners\u003c\/li\u003e\n\u003cli\u003e1-1\/2 inch head diameter and 3\/8 inch head thickness suit compact mounting spaces\u003c\/li\u003e\n\u003cli\u003e11\/16 inch hub diameter and 7\/8 inch overall height for low-profile installations\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard-thread lobed knob for use with 3\/8-16 UNC threaded studs, bolts, or threaded inserts common in industrial fixtures, enclosures, and mechanical assemblies.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation requires only hand tightening in most applications; verify the mating stud or threaded insert is rated for the intended load before assembly. Ensure the thread engagement depth does not exceed the 5\/8 inch hole depth to avoid bottoming out. No special tools or torque equipment are required for standard hand-knob service. Degrease mating threads before installation to ensure proper seating.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eKnob Type\u003c\/strong\u003e: Lobed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Points\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Aluminum, Grade 319\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Diameter\u003c\/strong\u003e: 1-1\/2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Height\u003c\/strong\u003e: 3\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Thickness\u003c\/strong\u003e: 3\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Height\u003c\/strong\u003e: 7\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHub Diameter\u003c\/strong\u003e: 11\/16 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpoke Diameter\u003c\/strong\u003e: 1-1\/2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 3\/8-16\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 5\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHole Depth\u003c\/strong\u003e: 5\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.03 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31162801\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: JERGENS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 21110\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JERGENS","offers":[{"title":"Default Title","offer_id":51971994124594,"sku":"21110","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e35f1c29138d91676c76ed5c20134f6e.jpg?v=1789960264","url":"https:\/\/voomisupply.com\/products\/jergens-21110-lobed-knob-4-point-aluminum-1-1-2-in","provider":"Voomi Supply","version":"1.0","type":"link"}