{"product_id":"vlier-ph57-threaded-spring-plunger-5-16-18-steel","title":"Vlier PH57 Threaded Spring Plunger 5\/16-18 Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VLIER PH57 is a standard threaded spring plunger designed to provide controlled, repeatable axial force in tooling, fixturing, and mechanical assembly applications. The steel body and steel nose deliver durability in demanding industrial environments. The plunger runs on a 5\/16-18 thread with a 1-inch thread length, delivering an initial end force of 1.5 pounds and a final end force of 4.5 pounds, with a middle end force of 3 pounds. This part is installed by machinists, toolmakers, and mechanical assemblers working with jigs, fixtures, and positioning mechanisms.\u003c\/p\u003e\n\u003cp\u003eThe PH57 is suited for use in precision fixturing, indexing mechanisms, and detent applications where a compact, threaded retention or positioning element is required. The 3\/16-inch plunger projection and 0.135-inch maximum plunger diameter make it compatible with tight-clearance installations in light industrial and machine shop settings. No locking element is incorporated, making installation and removal straightforward in standard threaded holes.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e5\/16-18 thread size with 1-inch thread length for secure mounting in standard threaded bores\u003c\/li\u003e\n  \u003cli\u003e1.5 pound initial end force and 4.5 pound final end force for consistent spring-loaded positioning\u003c\/li\u003e\n  \u003cli\u003e3\/16-inch plunger projection suitable for compact detent and indexing applications\u003c\/li\u003e\n  \u003cli\u003eSteel body and steel nose for durability in industrial tooling environments\u003c\/li\u003e\n  \u003cli\u003eNo locking element for straightforward installation and field adjustment\u003c\/li\u003e\n  \u003cli\u003eStandard plunger length type for conventional fixturing configurations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct-fit component for standard 5\/16-18 threaded spring plunger applications in industrial fixturing, jigs, and indexing assemblies.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by machinists or mechanical assemblers using a hex key sized to the 0.093-inch hex drive. Ensure the receiving threaded bore is clean and free of debris before installation. De-energize or lock out any associated powered equipment before servicing spring plunger assemblies in active fixtures. Do not exceed the rated end force limits by forcing the plunger beyond its designed projection range.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\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: 1.5 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMiddle End Force\u003c\/strong\u003e: 3 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinal End Force\u003c\/strong\u003e: 4.5 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: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHex Size\u003c\/strong\u003e: 0.093 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLocking Element\u003c\/strong\u003e: None\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: PH57\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VLIER","offers":[{"title":"Default Title","offer_id":51972041474354,"sku":"PH57","price":17.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/fd59e43002d2739d0a0c4c123086f079.jpg?v=1789961689","url":"https:\/\/voomisupply.com\/products\/vlier-ph57-threaded-spring-plunger-5-16-18-steel","provider":"Voomi Supply","version":"1.0","type":"link"}