{"product_id":"gibraltar-pr38-pt-g-pull-ring-plunger-3-8-16-steel","title":"Gibraltar PR38-PT-G Pull Ring Plunger 3\/8-16 Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GIBRALTAR PR38-PT-G is a steel pull ring plunger designed for use in indexing, positioning, and light-duty workholding applications. The plunger body threads into a tapped hole via a 3\/8-16 thread and delivers a spring-loaded nose that retracts when the pull ring is engaged. Initial end force is 0.75 pounds, rising to a 3 pound final end force at full compression. The plunger diameter measures 0.25 inches with a projection of 0.28 inches. Total plunger length is 0.82 inches. A locking element is incorporated into the design, allowing the plunger to be held in the retracted position when needed. This part is installed by machinists, toolmakers, and maintenance technicians.\u003c\/p\u003e\n\u003cp\u003eThe PR38-PT-G is suited for machine fixtures, jigs, tooling plates, and equipment panels where repeatable positioning or light detent action is required. The pull ring allows manual retraction without additional tools. Its compact form factor fits standard tapped holes in steel, aluminum, and cast iron assemblies. The non-locking plunger type allows free spring return under normal operation, while the locking element provides the option to hold the plunger retracted during loading or setup sequences.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e3\/8-16 thread for installation into standard tapped holes\u003c\/li\u003e\n  \u003cli\u003ePull ring for tool-free manual plunger retraction\u003c\/li\u003e\n  \u003cli\u003eNon-locking plunger type with integrated locking element to hold retracted position\u003c\/li\u003e\n  \u003cli\u003eSpring force range: 0.75 pounds initial to 3 pounds final end force\u003c\/li\u003e\n  \u003cli\u003eSteel construction for durability in industrial environments\u003c\/li\u003e\n  \u003cli\u003eCompact body length of 0.63 inches with 0.44 inches length under head\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard 3\/8-16 threaded pull ring spring plunger for use in machine fixtures, jigs, tooling assemblies, and equipment panels requiring light-duty indexing or positioning.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation requires a properly tapped 3\/8-16 hole in the mating component. A wrench applied to the 0.38 inch hex is used to thread the body in to the specified torque per fixture design requirements. Ensure the mating bore and thread are clean and free of chips before installation. Power down or de-energize any equipment before servicing fixtures that incorporate this plunger.\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\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 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\u003eThread Length\u003c\/strong\u003e: 0.31 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\u003eHex Size\u003c\/strong\u003e: 0.38 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\u003ePlunger Type\u003c\/strong\u003e: Non-Locking\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLocking Element\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.25 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: GIBRALTAR\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: PR38-PT-G\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GIBRALTAR","offers":[{"title":"Default Title","offer_id":51691377066290,"sku":"PR38-PT-G","price":19.69,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/36d6e6116d41dd83982bca85048e8d23.jpg?v=1788284124","url":"https:\/\/voomisupply.com\/products\/gibraltar-pr38-pt-g-pull-ring-plunger-3-8-16-steel","provider":"Voomi Supply","version":"1.0","type":"link"}