{"product_id":"vlier-nm54n-threaded-spring-plunger-1-4-20-steel-locking","title":"Vlier NM54N Threaded Spring Plunger 1\/4-20 Steel Locking","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VLIER NM54N is a stubby threaded spring plunger designed to provide controlled, repeatable positioning and detent force in mechanical assemblies. Featuring a 1\/4-20 thread with a 0.531-inch thread length, it delivers an initial end force of 3 pounds and a final end force of 10.5 pounds. The steel body offers durability in demanding industrial and manufacturing environments, while the Delrin nose reduces wear on mating surfaces. A built-in locking element secures the plunger in place after installation, preventing loosening from vibration. Machinists, toolmakers, and mechanical assembly technicians are the primary installers of this component.\u003c\/p\u003e\u003cp\u003eThis spring plunger is suited for use in jigs, fixtures, machine tools, and precision mechanical assemblies where consistent detent action or part positioning is required. The stubby body length of 0.531 inches makes it appropriate for applications with limited thread engagement depth. The 0.119-inch maximum plunger diameter and 0.078-inch projection are sized for light-duty detent and indexing functions in tight-clearance designs.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1\/4-20 thread size with 0.531-inch thread length for standard tapped-hole installation\u003c\/li\u003e\n\u003cli\u003eInitial end force of 3 pounds and final end force of 10.5 pounds for consistent detent action\u003c\/li\u003e\n\u003cli\u003eSteel body construction for strength and wear resistance\u003c\/li\u003e\n\u003cli\u003eDelrin nose material minimizes wear on contact surfaces\u003c\/li\u003e\n\u003cli\u003eLocking element prevents back-out under vibration\u003c\/li\u003e\n\u003cli\u003eStubby plunger length suits shallow thread engagement applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct-install spring plunger for mechanical assemblies requiring a 1\/4-20 threaded stubby spring plunger with a locking element.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by machinists or mechanical assembly technicians using a standard hex key or spanner tool appropriate for the plunger body. Thread the plunger into a pre-tapped 1\/4-20 hole, torquing only to manufacturer-specified values using calibrated tooling. De-energize or lock out any powered equipment before servicing assemblies containing spring plungers. Do not over-torque the body, as this can damage the locking element or distort the plunger bore.\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 Length Type\u003c\/strong\u003e: Stubby\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\u003ePlunger Projection\u003c\/strong\u003e: 0.078 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: 10.5 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: Delrin\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: NM54N\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VLIER","offers":[{"title":"Default Title","offer_id":51974288703794,"sku":"NM54N","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c02b8ba1de570d5695a4fb8e15a45dc3.jpg?v=1789976774","url":"https:\/\/voomisupply.com\/products\/vlier-nm54n-threaded-spring-plunger-1-4-20-steel-locking","provider":"Voomi Supply","version":"1.0","type":"link"}