{"product_id":"vlier-s56n-threaded-spring-plunger-5-16-18-steel-locking","title":"Vlier S56N Threaded Spring Plunger 5\/16-18 Steel Locking","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VLIER S56N is a standard threaded spring plunger designed for indexing, positioning, and light-duty holding applications in industrial assemblies. It features a 5\/16-18 thread with a 1 inch thread length and a steel body construction. The plunger nose is also steel, offering durability in repeated-cycle environments. Initial end force is 3 pounds, with a final end force of 15 pounds, giving the installer a defined engagement feel. A locking element is incorporated into the body to secure the plunger in position after installation without the need for additional fasteners. Machinists, tool and die technicians, and precision assembly professionals are the primary installers of this component.\u003c\/p\u003e\u003cp\u003eThe S56N is suited for use in jigs, fixtures, tooling plates, and mechanical assemblies where a reliable spring-loaded positioning point is needed. The 3\/16 inch plunger projection keeps the engagement profile low, making it appropriate for tight-clearance applications. Its standard plunger length type and threaded body allow direct installation into tapped holes in steel, aluminum, or similar materials. It is commonly used in OEM equipment builds and maintenance replacement scenarios on production and assembly equipment.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e5\/16-18 thread size with 1 inch thread length for direct installation into standard tapped holes\u003c\/li\u003e\n\u003cli\u003e3\/16 inch plunger projection for low-profile engagement in tight-clearance assemblies\u003c\/li\u003e\n\u003cli\u003e3 pound initial end force and 15 pound final end force for consistent, defined positioning feel\u003c\/li\u003e\n\u003cli\u003eSteel body and steel nose material for durability in high-cycle applications\u003c\/li\u003e\n\u003cli\u003eIntegrated locking element secures the plunger body after installation without jam nuts or adhesives\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or new-installation spring plunger for industrial jigs, fixtures, tooling plates, and mechanical positioning assemblies using a 5\/16-18 tapped hole.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by machinists or assembly technicians using a standard hex wrench or spanner tool appropriate for the plunger body drive style. Ensure the receiving tapped hole is clean and free of debris before threading in the plunger. The locking element should be engaged after the plunger is set to final position to prevent back-out under vibration. Do not exceed the specified final end force rating by over-compressing the plunger during assembly.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/16-18\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\u003eMinimum Plunger Diameter\u003c\/strong\u003e: 0.133 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Plunger Diameter\u003c\/strong\u003e: 0.135 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: 15 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: Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlunger Length Type\u003c\/strong\u003e: Standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLocking Element\u003c\/strong\u003e: Yes\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: S56N\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VLIER","offers":[{"title":"Default Title","offer_id":51972197548338,"sku":"S56N","price":15.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6a6fc0cb2c0c4c65ac5a702245109297.jpg?v=1789964249","url":"https:\/\/voomisupply.com\/products\/vlier-s56n-threaded-spring-plunger-5-16-18-steel-locking","provider":"Voomi Supply","version":"1.0","type":"link"}