{"product_id":"vlier-ssmd55-threaded-spring-plunger-1-4-20-stainless-steel","title":"Vlier SSMD55 Threaded Spring Plunger 1\/4-20 Stainless Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VLIER SSMD55 is a stubby-style threaded spring plunger designed for precise, repeatable positioning and light-duty detent applications in mechanical assemblies. It threads into a standard 1\/4-20 tapped hole and delivers a 1-pound initial end force rising to 3.5 pounds final end force as the plunger compresses. The stainless steel body resists corrosion in demanding environments, while the Delrin nose provides a low-friction, non-marring contact surface. The overall body length and thread length are both 0.531 inches, keeping the installed footprint compact. Machinists, tool and die technicians, and assembly line engineers typically install and service this type of hardware.\u003c\/p\u003e\u003cp\u003eThis spring plunger suits precision mechanical assemblies where controlled detent force and minimal projection are required. The stubby form factor is suited for applications with limited axial clearance. With a maximum plunger diameter of 0.119 inches and a projection of 0.078 inches, it fits in densely packed fixtures, jigs, tooling plates, and light-duty indexing mechanisms. The non-locking design allows straightforward installation and removal without the need for thread-locking elements.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eStubby plunger style for use in tight axial-clearance applications\u003c\/li\u003e\n\u003cli\u003eStainless steel body for corrosion resistance in harsh or washdown environments\u003c\/li\u003e\n\u003cli\u003eDelrin nose provides low-friction, non-marring contact against mating surfaces\u003c\/li\u003e\n\u003cli\u003e1\/4-20 thread for compatibility with standard tapped holes\u003c\/li\u003e\n\u003cli\u003e1-pound initial end force and 3.5-pound final end force for light-duty detent control\u003c\/li\u003e\n\u003cli\u003eNo locking element for straightforward installation and removal\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct-fit component for any assembly using a standard 1\/4-20 threaded spring plunger in a stubby-length configuration.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation requires a properly tapped 1\/4-20 through or blind hole in the mating component. Thread the plunger in using an appropriate hex key or spanner and confirm the nose moves freely through its full stroke before final assembly. De-energize or depressurize any associated mechanism before servicing spring plungers seated in active assemblies. Avoid over-torquing, as stainless steel threads in aluminum or softer materials can gall.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\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: 0.531 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Length\u003c\/strong\u003e: 0.531 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlunger Projection\u003c\/strong\u003e: 0.078 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Plunger Diameter\u003c\/strong\u003e: 0.119 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: 3.5 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Material\u003c\/strong\u003e: Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNose Material\u003c\/strong\u003e: Delrin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlunger Length Type\u003c\/strong\u003e: Stubby\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLocking Element\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: SSMD55\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VLIER","offers":[{"title":"Default Title","offer_id":52122191561010,"sku":"SSMD55","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/06179439fb3578de1d5df92fb66eac0f.jpg?v=1790085074","url":"https:\/\/voomisupply.com\/products\/vlier-ssmd55-threaded-spring-plunger-1-4-20-stainless-steel","provider":"Voomi Supply","version":"1.0","type":"link"}