{"product_id":"vlier-db56n-threaded-ball-plunger-5-16-18-steel-nylon","title":"Vlier DB56N Threaded Ball Plunger 5\/16-18 Steel Nylon","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VLIER DB56N is a threaded ball plunger designed for controlled end-force applications in mechanical assemblies, fixtures, and positioning systems. The body is steel with a zinc-plated finish, and the ball is nylon with a diameter of 0.156 inches. Thread size is 5\/16-18. The body measures 0.578 inches in length, with a maximum ball reach of 0.04 inches. An initial end force of 4 pounds and a final end force of 9 pounds provide predictable, repeatable detent action. A built-in locking element secures the plunger in position after installation, preventing loosening under vibration or repeated cycling.\u003c\/p\u003e\u003cp\u003eThis ball plunger is suited for use in tooling, jigs, fixtures, machine components, and light industrial positioning applications where a controlled detent or indexing force is required. The nylon ball minimizes surface marking on mating parts, making it appropriate for assemblies where contact-surface protection matters. The purple color code aids in quick identification during assembly and maintenance operations.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e5\/16-18 thread size for standard installation into threaded holes\u003c\/li\u003e\n\u003cli\u003eSteel body with zinc-plated finish for corrosion resistance\u003c\/li\u003e\n\u003cli\u003eNylon ball, 0.156 inches diameter, reduces marking on mating surfaces\u003c\/li\u003e\n\u003cli\u003e4-pound initial end force and 9-pound final end force for controlled detent action\u003c\/li\u003e\n\u003cli\u003eLocking element prevents backing out under vibration or repeated use\u003c\/li\u003e\n\u003cli\u003ePurple color code for fast visual identification during assembly\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard 5\/16-18 threaded ball plunger for use in tooling, fixtures, and mechanical assemblies requiring controlled end-force detent function.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by threading the DB56N into a pre-tapped 5\/16-18 hole using an appropriate hex key or driver. Ensure the mating bore is clean and properly tapped to the correct depth before installation. The locking element should be engaged to the specified torque range per the application requirement  -  do not overtighten, as this can damage the locking feature or the surrounding material. Depressurize or de-energize any assembly before servicing components in the same area.\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\u003eBody Length\u003c\/strong\u003e: 0.578 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBall Diameter\u003c\/strong\u003e: 0.156 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: 4 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinal End Force\u003c\/strong\u003e: 9 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: Nylon\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Zinc-Plated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLocking Element\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Controlled End Force\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: DB56N\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VLIER","offers":[{"title":"Default Title","offer_id":51972054155570,"sku":"DB56N","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/4be7ce29a549855720e005559b7ec5c8_fcff47fa-1cb5-4c4d-83ee-3dee8bcfa46a.jpg?v=1789962148","url":"https:\/\/voomisupply.com\/products\/vlier-db56n-threaded-ball-plunger-5-16-18-steel-nylon","provider":"Voomi Supply","version":"1.0","type":"link"}