{"product_id":"jergens-26878-threaded-spring-plunger-m20-x-2-5-steel","title":"Jergens 26878 Threaded Spring Plunger M20 X 2.5 Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe JERGENS 26878 is a threaded spring plunger designed for indexing, positioning, and light-duty locking applications in industrial machinery and tooling fixtures. The steel body and steel nose provide consistent durability in production environments. It features an M20 x 2.5 thread with a 44 mm thread length, a maximum plunger diameter of 9.5 mm, and a plunger projection of 8 mm. Initial end force is 3.05 kg and final end force is 16.95 kg, giving the installer predictable spring resistance across the plunger stroke. A 10 mm hex drive allows straightforward torque-to-seat installation with standard hand tools.\u003c\/p\u003e\n\u003cp\u003eThis spring plunger is suited for use in machine tool fixtures, jigs, assembly tooling, and automation equipment where repeatable part location or light detent action is required. The black finish helps resist surface corrosion in shop environments. No locking element is present, making this a free-threaded design that relies on wrench engagement at the hex for final positioning. It is typically installed by machinists, tool and die makers, or mechanical maintenance technicians during fixture build or equipment maintenance.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eM20 x 2.5 thread with 44 mm thread length for deep engagement in thick tooling plates\u003c\/li\u003e\n  \u003cli\u003eSteel body and steel nose for durability in production and fixture applications\u003c\/li\u003e\n  \u003cli\u003e8 mm plunger projection with 9.5 mm maximum plunger diameter\u003c\/li\u003e\n  \u003cli\u003eInitial end force of 3.05 kg and final end force of 16.95 kg for controlled spring resistance\u003c\/li\u003e\n  \u003cli\u003e10 mm hex drive for precise installation with standard wrenches\u003c\/li\u003e\n  \u003cli\u003eBlack finish for corrosion resistance in shop environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard threaded spring plunger for industrial fixtures, jigs, and machine tool applications requiring an M20 x 2.5 threaded body with steel construction.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by threading the plunger body into a tapped M20 x 2.5 hole using a 10 mm hex wrench. Ensure the mating bore is clean and correctly tapped to full depth before installation. De-energize or lock out any machinery before servicing fixtures or tooling that contain spring plungers. Do not overtighten, as excessive torque can deform the plunger body or alter spring preload characteristics.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: M20 x 2.5\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 44 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBody Length\u003c\/strong\u003e: 44 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Plunger Diameter\u003c\/strong\u003e: 9.5 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlunger Projection\u003c\/strong\u003e: 8 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInitial End Force\u003c\/strong\u003e: 3.05 kg\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinal End Force\u003c\/strong\u003e: 16.95 kg\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHex Size\u003c\/strong\u003e: 10 mm\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: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLocking Element\u003c\/strong\u003e: None\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Black\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: JERGENS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 26878\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JERGENS","offers":[{"title":"Default Title","offer_id":51979618648370,"sku":"26878","price":24.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/42538ccc73a5e558154a507f9fb9ab08_35890b54-177c-41f5-a8f2-4a914e4281ae.jpg?v=1789980924","url":"https:\/\/voomisupply.com\/products\/jergens-26878-threaded-spring-plunger-m20-x-2-5-steel","provider":"Voomi Supply","version":"1.0","type":"link"}