{"product_id":"vlier-prsn250-pull-ring-plunger-1-4-20-steel","title":"Vlier PRSN250 Pull Ring Plunger 1\/4-20 Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VLIER PRSN250 is a steel pull ring plunger designed for indexing, positioning, and detent applications in industrial assemblies. This non-locking spring plunger threads into a tapped hole using a 1\/4-20 thread and delivers an initial end force of 0.5 pounds rising to a final end force of 2 pounds. The pull ring allows manual retraction of the plunger without additional tooling, making it well suited for applications requiring frequent adjustment or quick-release positioning. Machinists, maintenance technicians, and mechanical assemblers install this type of component in fixtures, jigs, slides, and panel assemblies.\u003c\/p\u003e\n\u003cp\u003eThe PRSN250 is used in light-duty mechanical positioning systems where a retractable plunger must engage a detent hole or groove. Typical install scenarios include machine tool fixtures, sliding drawer mechanisms, panel latches, and tooling plates. The pull ring allows the operator to retract the plunger by hand, making it appropriate for assemblies that cycle frequently without tools. This plunger is suited for both production equipment and maintenance tooling in industrial and commercial settings.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003ePull ring allows hand retraction without tools for fast, repeated indexing\u003c\/li\u003e\n  \u003cli\u003eNon-locking plunger design for free spring-return engagement\u003c\/li\u003e\n  \u003cli\u003e1\/4-20 thread for installation in standard tapped holes\u003c\/li\u003e\n  \u003cli\u003eSteel construction for durability in industrial environments\u003c\/li\u003e\n  \u003cli\u003eInitial end force of 0.5 pounds and final end force of 2 pounds for light-duty detent holding\u003c\/li\u003e\n  \u003cli\u003eCompact body length of 0.44 inches fits tight-clearance 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 component for assemblies requiring a 1\/4-20 threaded non-locking pull ring spring plunger with a 0.16-inch plunger diameter.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation requires a clean, properly tapped 1\/4-20 through or blind hole in the mating component. Use an appropriate hex wrench sized for the 0.25-inch hex drive to thread the plunger body to the correct depth. Ensure the assembly is de-energized and any moving components are secured before installing or removing plungers in active equipment. Do not exceed the rated end force by over-compressing the plunger, as this can damage the spring or plunger tip.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/4-20\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.31 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlunger Type\u003c\/strong\u003e: Non-Locking Pull Ring\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlunger Diameter\u003c\/strong\u003e: 0.16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlunger Projection\u003c\/strong\u003e: 0.19 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlunger Length\u003c\/strong\u003e: 0.62 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBody Length\u003c\/strong\u003e: 0.44 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 0.31 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Height\u003c\/strong\u003e: 0.18 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHex Size\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRing Diameter\u003c\/strong\u003e: 0.62 inches\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: 2 pounds\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\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: PRSN250\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VLIER","offers":[{"title":"Default Title","offer_id":52081955209522,"sku":"PRSN250","price":25.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6e4d91120e1d2a14a325a9a155b8f247.jpg?v=1790056530","url":"https:\/\/voomisupply.com\/products\/vlier-prsn250-pull-ring-plunger-1-4-20-steel","provider":"Voomi Supply","version":"1.0","type":"link"}