{"product_id":"vlier-h55-threaded-spring-plunger-1-4-20-steel-body","title":"Vlier H55 Threaded Spring Plunger 1\/4-20 Steel Body","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VLIER H55 is a threaded spring plunger designed to provide controlled, repeatable positioning and indexing force in mechanical assemblies. It features a 1\/4-20 thread size with a 1 inch thread length and a standard plunger projection of 3\/16 inch. The steel body and steel nose deliver durable performance in light industrial and precision mechanical applications. Initial end force is 1 pound, with a final end force of 4 pounds, making it well suited for low-to-moderate detent and locating functions. Installation is performed by machinists, toolmakers, and mechanical assembly technicians.\u003c\/p\u003e\n\u003cp\u003eThe H55 is used in tooling fixtures, jigs, machine assemblies, and positioning mechanisms where repeatable spring-loaded engagement is required. Its compact 1\/4-20 threaded body allows it to be installed in standard tapped holes across a wide range of workholding and indexing applications. The 1\/8 inch hex drive size accommodates installation with standard hex wrenches. No locking element is present, which simplifies installation and removal in applications where thread-locking compounds or staking are not required.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1\/4-20 thread size with 1 inch thread length for standard tapped-hole installation\u003c\/li\u003e\n  \u003cli\u003eStandard plunger projection of 3\/16 inch with a nose radius of 0.071 inch\u003c\/li\u003e\n  \u003cli\u003eInitial end force of 1 pound, middle end force of 2.5 pounds, and final end force of 4 pounds\u003c\/li\u003e\n  \u003cli\u003eSteel body and steel nose construction for durability in industrial environments\u003c\/li\u003e\n  \u003cli\u003e1\/8 inch hex drive for easy installation and removal with common hand tools\u003c\/li\u003e\n  \u003cli\u003eNo locking element for straightforward threaded installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard threaded spring plunger for use in tapped holes sized for 1\/4-20 threads in tooling fixtures, jigs, and mechanical positioning assemblies.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by threading the H55 into a properly tapped 1\/4-20 hole using a 1\/8 inch hex wrench. Ensure the mating assembly is de-energized and stationary before installation or removal. Apply thread-locking compound if retention under vibration is required, as the H55 does not include an internal locking element. Avoid overtightening, which can damage the spring mechanism or thread engagement.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\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: 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\u003eNose Radius\u003c\/strong\u003e: 0.071 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInitial End Force\u003c\/strong\u003e: 1 pound\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMiddle End Force\u003c\/strong\u003e: 2.5 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinal End Force\u003c\/strong\u003e: 4 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHex Size\u003c\/strong\u003e: 1\/8 inch\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\u003eLocking Element\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlunger Length Type\u003c\/strong\u003e: Standard\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\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: H55\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VLIER","offers":[{"title":"Default Title","offer_id":51980431163698,"sku":"H55","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/dd8ca230a5fa4e63cab08e20b39f4fc2.jpg?v=1789981537","url":"https:\/\/voomisupply.com\/products\/vlier-h55-threaded-spring-plunger-1-4-20-steel-body","provider":"Voomi Supply","version":"1.0","type":"link"}