{"product_id":"gibraltar-stpr25-pt-g-locking-pull-ring-plunger-1-4-20","title":"Gibraltar STPR25-PT-G Locking Pull Ring Plunger 1\/4-20","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GIBRALTAR STPR25-PT-G is a steel locking pull ring plunger designed for indexing, positioning, and retention applications in mechanical assemblies. It features a 1\/4-20 thread size with a 0.8-inch thread length and a spring-loaded plunger that delivers 1 pound of initial end force rising to 2.5 pounds of final end force. The plunger diameter is 0.155 inches with a 0.25-inch projection, and the locking pull ring allows the plunger to be retracted and held in the disengaged position for hands-free operation. Machinists, maintenance technicians, and equipment fabricators install these plungers into threaded bores on panels, fixtures, and machinery frames.\u003c\/p\u003e\n\u003cp\u003eThis plunger is suited for light-duty industrial and mechanical applications where a compact, threaded retention device is needed. Typical uses include locking slides, positioning stops, detent mechanisms, and adjustable fixture components. The locking ring feature makes it practical in applications where the plunger must stay retracted during part loading or adjustment before snapping back into engagement. The steel construction holds up in shop environments exposed to moderate wear and mechanical contact.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eLocking pull ring retracts and holds plunger disengaged for hands-free operation\u003c\/li\u003e\n  \u003cli\u003e1\/4-20 thread size with 0.8-inch thread length for standard threaded bore installation\u003c\/li\u003e\n  \u003cli\u003eSteel construction for durability in mechanical and industrial service\u003c\/li\u003e\n  \u003cli\u003e1 pound initial to 2.5 pound final end force for light-duty indexing and retention\u003c\/li\u003e\n  \u003cli\u003e0.155-inch plunger diameter with 0.25-inch projection suits compact assembly designs\u003c\/li\u003e\n  \u003cli\u003eRing diameter of 0.62 inches provides a positive grip for pull-back actuation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a direct-threaded replacement or new-installation locking pull ring plunger for mechanical assemblies using a 1\/4-20 threaded bore requiring a spring-loaded retention plunger with locking capability.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by machinists or maintenance technicians using standard hand tools to thread the plunger body into a tapped 1\/4-20 bore. De-energize or lock out any powered equipment before installing or replacing plungers in active machinery. Do not overtighten the plunger body, as this can distort the thread and affect spring travel. Verify plunger projection and end force are appropriate for the detent or indexing load before placing the assembly into service.\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: 0.8 inches\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: 2.5 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlunger Diameter\u003c\/strong\u003e: 0.155 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: 1.14 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBody Length\u003c\/strong\u003e: 1.14 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 0.8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Height\u003c\/strong\u003e: 0.34 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\u003ePlunger Type\u003c\/strong\u003e: 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: 0.05 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: STPR25-PT-G\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GIBRALTAR","offers":[{"title":"Default Title","offer_id":51689192653106,"sku":"STPR25-PT-G","price":22.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ee4deb65c69ea2294755f5484193d707.jpg?v=1788255946","url":"https:\/\/voomisupply.com\/products\/gibraltar-stpr25-pt-g-locking-pull-ring-plunger-1-4-20","provider":"Voomi Supply","version":"1.0","type":"link"}