{"product_id":"vlier-pfp57-press-fit-spring-plunger-3-8-inch-steel","title":"Vlier PFP57 Press Fit Spring Plunger 3\/8 Inch Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VLIER PFP57 is a press fit spring plunger designed for light end force applications in precision assemblies and industrial mechanisms. The steel body measures 0.375 inches in diameter and 0.786 inches in length, with a flanged design that seats flush against the housing surface during installation. The spring delivers 2.5 pounds of initial end force and 7 pounds of final end force, making it suited for indexing, positioning, and detent functions where consistent, repeatable engagement is required. The plunger nose diameter is 0.234 inches with a total plunger length of 0.882 inches.\u003c\/p\u003e\n\u003cp\u003eThis spring plunger is used in light-duty positioning and retention applications across industrial manufacturing, tooling fixtures, and precision mechanical assemblies. The press fit installation method eliminates the need for threaded bores, making it a practical choice in thin-wall or close-tolerance housings where thread cutting is not feasible. Installation is performed by pressing the body directly into a drilled hole sized to the specified body diameter.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003ePress fit body installs into a plain drilled hole  -  no tapping required\u003c\/li\u003e\n  \u003cli\u003eSteel body and nose construction for durability in industrial environments\u003c\/li\u003e\n  \u003cli\u003e2.5 pounds initial to 7 pounds final end force for light detent and positioning duty\u003c\/li\u003e\n  \u003cli\u003eFlanged design with 0.5 inch flange diameter and 0.096 inch flange thickness for positive seating\u003c\/li\u003e\n  \u003cli\u003eCompact form factor: 0.375 inch body diameter, 0.786 inch body length\u003c\/li\u003e\n  \u003cli\u003eNo locking element  -  standard spring plunger configuration\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style press fit spring plunger for light end force applications in precision fixtures, tooling, and mechanical assemblies where a 0.375 inch bore diameter is present.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by a machinist or assembly technician using a press or arbor press to drive the plunger body into a properly sized drilled hole. The bore should be machined to the appropriate interference fit tolerance for the 0.375 inch body diameter before pressing. Ensure the mating assembly is fully powered down and de-energized if installed in automated equipment before servicing. Do not exceed the press force required to seat the flange flush, as overdriving may deform the housing bore.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBody Diameter\u003c\/strong\u003e: 0.375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBody Length\u003c\/strong\u003e: 0.786 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlunger Diameter (Nose Diameter)\u003c\/strong\u003e: 0.234 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlunger Length\u003c\/strong\u003e: 0.882 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlunger Projection\u003c\/strong\u003e: 0.187 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Flange\u003c\/strong\u003e: 0.786 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlange Diameter\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlange Thickness\u003c\/strong\u003e: 0.096 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInitial End Force\u003c\/strong\u003e: 2.5 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinal End Force\u003c\/strong\u003e: 7 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLocking Element\u003c\/strong\u003e: None\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Light End Force\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\u003eWeight\u003c\/strong\u003e: 0.03 pounds\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: PFP57\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VLIER","offers":[{"title":"Default Title","offer_id":51971408822578,"sku":"PFP57","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/9ef912f00a8482ff36bd4670c47572e3.jpg?v=1789956991","url":"https:\/\/voomisupply.com\/products\/vlier-pfp57-press-fit-spring-plunger-3-8-inch-steel","provider":"Voomi Supply","version":"1.0","type":"link"}