{"product_id":"gibraltar-57089g-threaded-spring-plunger-1-4-28-steel","title":"Gibraltar 57089G Threaded Spring Plunger 1\/4-28 Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe GIBRALTAR 57089G is a threaded spring plunger designed for indexing, positioning, and locating applications in mechanical assemblies. The plunger features a 1\/4-28 thread with a 1 inch thread length and a maximum plunger diameter of 0.118 inches. A Delrin nose rides against mating surfaces to minimize marring, while the steel body provides structural durability. An integrated locking element locks the plunger in place once threaded to the correct depth, preventing back-out from vibration. Initial end force is 3 pounds with a final end force of 13 pounds, making this suitable for light-duty positioning and detent work.\u003c\/p\u003e\u003cp\u003eThis spring plunger is used in machine tool fixtures, jigs, production equipment, and precision mechanical assemblies where repeatable positioning or detent action is required. The 3\/16 inch projection provides the travel needed for typical indexing applications. The black finish and compact body length of 1 inch suit installations with limited clearance. Machinists, tool-and-die makers, and mechanical assembly technicians install this type of component in both production and maintenance contexts.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1\/4-28 thread size with 1 inch thread length for standard tapped hole installation\u003c\/li\u003e\n\u003cli\u003eLocking element prevents back-out and maintains set depth under vibration\u003c\/li\u003e\n\u003cli\u003eDelrin nose minimizes surface marring on mating components\u003c\/li\u003e\n\u003cli\u003eSteel body construction for durability in industrial environments\u003c\/li\u003e\n\u003cli\u003e3 pound initial end force and 13 pound final end force for light-duty detent and positioning\u003c\/li\u003e\n\u003cli\u003eBlack finish with 3\/16 inch plunger projection\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in standard 1\/4-28 tapped holes in mechanical fixtures, jigs, machine tool components, and production assembly equipment requiring spring-loaded positioning or detent action.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstall using a 5\/64 inch hex key to thread the plunger body into a pre-tapped 1\/4-28 hole. Ensure the mating hole is clean and free of debris before installation. Tighten to the desired depth and engage the locking element to secure position. Depressurize or de-energize any pneumatic or powered equipment before servicing assemblies that contain spring plungers.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/4-28\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Length\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlunger Projection\u003c\/strong\u003e: 3\/16 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Plunger Diameter\u003c\/strong\u003e: 0.118 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInitial End Force\u003c\/strong\u003e: 3 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinal End Force\u003c\/strong\u003e: 13 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Material\u003c\/strong\u003e: Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNose Material\u003c\/strong\u003e: Delrin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHex Size\u003c\/strong\u003e: 5\/64 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLocking Element\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTolerance\u003c\/strong\u003e: +0.0000 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.05 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 57089G\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GIBRALTAR","offers":[{"title":"Default Title","offer_id":51723841831218,"sku":"57089G","price":33.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/42538ccc73a5e558154a507f9fb9ab08_418c07bc-fe1a-4fd9-b314-af8580b38383.jpg?v=1788608557","url":"https:\/\/voomisupply.com\/products\/gibraltar-57089g-threaded-spring-plunger-1-4-28-steel","provider":"Voomi Supply","version":"1.0","type":"link"}