{"product_id":"vlier-bl56n-threaded-ball-plunger-5-16-18-steel","title":"Vlier BL56N Threaded Ball Plunger 5\/16-18 Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VLIER BL56N is a threaded ball plunger designed to provide controlled end force in positioning, indexing, and detent applications. It features a 5\/16-18 thread, a steel body measuring 0.578 inches in length, and a steel ball with a 0.156 inch diameter and a maximum ball reach of 0.04 inches. Initial end force is 2 pounds, with a final end force of 4.25 pounds. A locking element is included to secure the plunger in position once set. This part is among the smallest and lightest spring-loaded devices in its class, making it well suited for installations where space and weight are at a premium.\u003c\/p\u003e\u003cp\u003eThe BL56N is used in mechanical assemblies where repeatable, spring-loaded ball detent action is required. Typical applications include fixture tooling, jigs, machine slides, and precision equipment where controlled positioning force must be maintained. The compact 5\/16-18 threaded body allows installation into tight clearance areas. Technicians and machinists working in industrial, automation, and trade equipment environments will find this plunger appropriate for both OEM builds and field-service replacements.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e5\/16-18 thread for standard tapped-hole installation\u003c\/li\u003e\n\u003cli\u003eSteel body and steel ball for durability in demanding environments\u003c\/li\u003e\n\u003cli\u003eIntegrated locking element to hold set position\u003c\/li\u003e\n\u003cli\u003eControlled end force: 2 pounds initial, 4.25 pounds final\u003c\/li\u003e\n\u003cli\u003eCompact 0.578 inch body length  -  one of the smallest and lightest spring-loaded devices available in this thread size\u003c\/li\u003e\n\u003cli\u003eColor code: Purple for quick field identification\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard threaded ball plunger replacement or OEM-style component for mechanical assemblies requiring a 5\/16-18 threaded detent device with controlled spring force.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation requires a properly tapped 5\/16-18 threaded hole in the receiving component. Use appropriate thread-engagement depth to ensure the locking element functions correctly. Avoid overtightening, which can damage the locking element or restrict ball travel. Ensure the assembly is de-energized and free of movement before servicing or replacing plunger components in automated or powered equipment.\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\u003eBall Diameter\u003c\/strong\u003e: 0.156 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Length\u003c\/strong\u003e: 0.578 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Ball Reach\u003c\/strong\u003e: 0.04 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInitial End Force\u003c\/strong\u003e: 2 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinal End Force\u003c\/strong\u003e: 4.25 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Material\u003c\/strong\u003e: Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBall Material\u003c\/strong\u003e: Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLocking Element\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor Code\u003c\/strong\u003e: Purple\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: BL56N\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VLIER","offers":[{"title":"Default Title","offer_id":51971987865906,"sku":"BL56N","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/934f83f2ea9ebecbfb4f6d8675beddd5.jpg?v=1789960071","url":"https:\/\/voomisupply.com\/products\/vlier-bl56n-threaded-ball-plunger-5-16-18-steel","provider":"Voomi Supply","version":"1.0","type":"link"}