{"product_id":"vlier-sl500-knob-handle-spring-plunger-1-2-13-thread","title":"Vlier SL500 Knob Handle Spring Plunger 1\/2-13 Thread","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VLIER SL500 is a knob handle spring plunger designed for indexing, positioning, and locating applications in industrial and mechanical assemblies. It features a 1\/2-13 thread size with a thread length of 0.875 inches and a non-locking plunger type. The knurled knob provides manual actuation without tools. The plunger delivers an initial end force of 1 pound and a final end force of 10 pounds, making it suitable for moderate-resistance positioning tasks. Body length measures 1.13 inches. The steel construction with a zinc gold chromate finish provides corrosion resistance in light industrial environments. Machinists, tool and die technicians, and mechanical assemblers typically install this type of component.\u003c\/p\u003e\u003cp\u003eThe SL500 is used in jigs, fixtures, machine tool assemblies, and production tooling where repeatable plunger-actuated positioning is required. The knurled knob allows hand-actuation for frequent indexing cycles without requiring a wrench or driver. The 0.248-inch maximum plunger diameter and 0.25-inch plunger projection make it suited for light-duty detent and positioning work in compact assemblies. It installs into a tapped 1\/2-13 hole with 0.875 inches of usable thread engagement.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eNon-locking plunger type for free-motion indexing and detent applications\u003c\/li\u003e\n\u003cli\u003eKnurled knob handle allows tool-free manual actuation\u003c\/li\u003e\n\u003cli\u003eInitial end force of 1 pound, final end force of 10 pounds for controlled resistance\u003c\/li\u003e\n\u003cli\u003eSteel body with zinc gold chromate finish for corrosion resistance\u003c\/li\u003e\n\u003cli\u003eMaximum plunger diameter of 0.248 inches with a tolerance of +0.001 \/ -0.000 inches\u003c\/li\u003e\n\u003cli\u003ePlunger projection of 0.25 inches and plunger length of 1.5 inches\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for installation into standard 1\/2-13 tapped holes in jigs, fixtures, and machine tool assemblies requiring a non-locking knob-actuated spring plunger.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by threading the SL500 into a pre-tapped 1\/2-13 hole to the appropriate engagement depth. De-energize and lock out any powered equipment before servicing assemblies containing this component. Use a torque approach appropriate to the receiving material to avoid thread damage  -  do not over-drive the body. Ensure the plunger bore is clean and free of debris before assembly to avoid interference with plunger travel.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/2-13\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.875 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Length\u003c\/strong\u003e: 1.13 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Under Head\/Shoulder\u003c\/strong\u003e: 0.875 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Diameter\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Height\u003c\/strong\u003e: 0.38 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead and Shoulder Height\u003c\/strong\u003e: 0.625 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Plunger Diameter\u003c\/strong\u003e: 0.248 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlunger Diameter Tolerance\u003c\/strong\u003e: +0.001 \/ -0.000 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: 1.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlunger Type\u003c\/strong\u003e: Non-Locking\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInitial End Force\u003c\/strong\u003e: 1 pound\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinal End Force\u003c\/strong\u003e: 10 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKnob Style\u003c\/strong\u003e: Knurled\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLocking Element\u003c\/strong\u003e: No\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: Zinc Gold Chromate\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: SL500\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VLIER","offers":[{"title":"Default Title","offer_id":52110185496882,"sku":"SL500","price":26.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d5132f7a4aa5b081afe4b8548cf22927.jpg?v=1790076094","url":"https:\/\/voomisupply.com\/products\/vlier-sl500-knob-handle-spring-plunger-1-2-13-thread","provider":"Voomi Supply","version":"1.0","type":"link"}