{"product_id":"vlier-prsn375-pull-ring-plunger-3-8-16-steel","title":"Vlier PRSN375 Pull Ring Plunger 3\/8-16 Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VLIER PRSN375 is a non-locking, spring-loaded pull ring plunger with a 3\/8-16 thread and a steel body. It is designed for indexing, positioning, and locking applications in industrial and mechanical assemblies. The plunger delivers an initial end force of 0.75 pounds, ramping to a final end force of 3 pounds, making it suitable for light-duty positioning tasks. With a plunger diameter of 0.25 inches and a plunger projection of 0.28 inches, the PRSN375 installs into tapped holes and provides repeatable spring-loaded detent action. Maintenance technicians and machine builders install this component in fixtures, jigs, and mechanical panels.\u003c\/p\u003e\n\u003cp\u003eThis pull ring plunger is used in applications requiring a retractable plunger that can be manually withdrawn via the pull ring, allowing controlled engagement and disengagement without tools. Typical installations include assembly fixtures, tooling plates, equipment enclosures, and positioning mechanisms where a non-locking detent is required. The 3\/8-16 thread allows installation into standard tapped steel or aluminum housings. The steel construction handles moderate wear in shop-floor and light industrial environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eNon-locking pull ring design allows manual plunger retraction without tools\u003c\/li\u003e\n  \u003cli\u003e3\/8-16 thread with 0.31 inches thread length for standard tapped-hole installation\u003c\/li\u003e\n  \u003cli\u003eSpring force range: 0.75 pounds initial to 3 pounds final end force\u003c\/li\u003e\n  \u003cli\u003ePlunger diameter of 0.25 inches with 0.28 inches projection for repeatable detent positioning\u003c\/li\u003e\n  \u003cli\u003eSteel construction for durability in light industrial and mechanical assembly applications\u003c\/li\u003e\n  \u003cli\u003eCompact body length of 0.63 inches suits space-constrained installations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style spring plunger for industrial fixtures, tooling plates, and mechanical assemblies using 3\/8-16 tapped holes.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall into a properly tapped 3\/8-16 hole using the 0.38 inches hex for torquing with a standard wrench. Power down or de-energize any associated equipment before servicing components in the assembly. Do not overtighten, as excessive torque can distort the body and affect plunger travel. Consult applicable machinery safety standards for the specific application before installation.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\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: 0.31 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlunger Diameter\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlunger Projection\u003c\/strong\u003e: 0.28 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlunger Length\u003c\/strong\u003e: 0.82 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBody Length\u003c\/strong\u003e: 0.63 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 0.44 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Height\u003c\/strong\u003e: 0.19 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHex Size\u003c\/strong\u003e: 0.38 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRing Diameter\u003c\/strong\u003e: 0.75 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInitial End Force\u003c\/strong\u003e: 0.75 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinal End Force\u003c\/strong\u003e: 3 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlunger Type\u003c\/strong\u003e: Non-Locking\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: PRSN375\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VLIER","offers":[{"title":"Default Title","offer_id":52063265259826,"sku":"PRSN375","price":22.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1cfae6c01368537445c25faab9586b0f.jpg?v=1790043222","url":"https:\/\/voomisupply.com\/products\/vlier-prsn375-pull-ring-plunger-3-8-16-steel","provider":"Voomi Supply","version":"1.0","type":"link"}