{"product_id":"vlier-prtl500-locking-knob-handle-plunger-1-2-13","title":"Vlier PRTL500 Locking Knob Handle Plunger 1\/2-13","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VLIER PRTL500 is a locking knob handle plunger designed for positioning, indexing, and holding applications in industrial and mechanical assemblies. The plunger features a Delrin knob handle for manual actuation and a steel body with a black finish. It operates with an initial end force of 0.5 pounds and a final end force of 1.75 pounds, making it suitable for light-duty retention tasks. The 1\/2-13 thread size allows for straightforward installation into standard threaded holes. This plunger is typically installed by maintenance technicians, machine builders, or fabricators working on jigs, fixtures, and tooling setups.\u003c\/p\u003e\n\u003cp\u003eThe PRTL500 is well suited for use in production tooling, fixture plates, and general industrial machinery where a manually operated locking plunger is required. The locking knob style allows the plunger to be retracted and held in the withdrawn position, freeing both hands during workpiece loading and unloading. This makes it a practical choice in repetitive assembly or staging operations where fast part changes are needed.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eLocking plunger type allows retraction and hold-back for hands-free operation\u003c\/li\u003e\n  \u003cli\u003eDelrin knob handle provides comfortable manual actuation without tools\u003c\/li\u003e\n  \u003cli\u003eInitial end force of 0.5 pounds rising to a final end force of 1.75 pounds\u003c\/li\u003e\n  \u003cli\u003e1\/2-13 thread size for standard threaded hole installation\u003c\/li\u003e\n  \u003cli\u003eSteel construction with black finish for durability and corrosion resistance\u003c\/li\u003e\n  \u003cli\u003eCompact body length of 1.25 inches suits space-constrained assemblies\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct-fit addition for industrial fixtures, jigs, and mechanical assemblies requiring a 1\/2-13 threaded locking knob handle plunger.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by threading the PRTL500 into a prepared 1\/2-13 tapped hole using the hex drive on the body. De-energize or lock out any powered equipment before servicing assemblies that contain this plunger. Verify thread engagement depth matches the 1 inch length under head specification to ensure proper seating and force delivery. Do not exceed the rated end force by forcing the plunger beyond its design travel.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/2-13\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInitial End Force\u003c\/strong\u003e: 0.5 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinal End Force\u003c\/strong\u003e: 1.75 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Plunger Diameter\u003c\/strong\u003e: 0.31 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlunger Projection\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlunger Length\u003c\/strong\u003e: 1.9 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBody Length\u003c\/strong\u003e: 1.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\/Shoulder\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Diameter\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead and Shoulder Height\u003c\/strong\u003e: 0.9 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHex Size\u003c\/strong\u003e: 1\/2 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlunger Type\u003c\/strong\u003e: Locking\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eKnob Style\u003c\/strong\u003e: Delrin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Black\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: VLIER\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: PRTL500\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VLIER","offers":[{"title":"Default Title","offer_id":51974232244530,"sku":"PRTL500","price":32.47,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/92babc60882fe14aea7a1322b6a9e3e6_5af606ec-469b-4245-8dfd-44db901d4c7f.jpg?v=1789976479","url":"https:\/\/voomisupply.com\/products\/vlier-prtl500-locking-knob-handle-plunger-1-2-13","provider":"Voomi Supply","version":"1.0","type":"link"}