{"product_id":"vlier-spfp54-press-fit-spring-plunger-stainless-steel","title":"Vlier SPFP54 Press Fit Spring Plunger Stainless Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VLIER SPFP54 is a press fit spring plunger made from stainless steel, designed for light end force positioning and indexing applications in precision mechanical assemblies. The plunger body measures 0.521 inches in length with a 0.25 inch body diameter, and the stainless steel nose plunger has a diameter of 0.168 inches with a projection of 0.125 inches. Initial end force is 2.5 pounds, increasing to a final end force of 6 pounds. The flanged press fit design allows installation without threading, making it suitable for use in fixtures, jigs, and automated equipment where consistent, repeatable part positioning is required. Machinists, toolmakers, and mechanical assembly technicians typically install this component.\u003c\/p\u003e\u003cp\u003eThe SPFP54 is suited for light-duty positioning applications in production tooling, fixture plates, machine components, and precision assemblies. Its small form factor and press fit installation make it a practical choice where space is limited and threaded installation is not practical or desired. The stainless steel construction provides corrosion resistance in light industrial and cleanroom-adjacent environments. This plunger is appropriate for applications specifying light end force, where a controlled, repeatable detent action is needed without heavy spring resistance.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePress fit installation eliminates the need for threaded bores, simplifying assembly\u003c\/li\u003e\n\u003cli\u003eStainless steel body and nose material for corrosion resistance\u003c\/li\u003e\n\u003cli\u003eLight end force range: 2.5 pounds initial to 6 pounds final\u003c\/li\u003e\n\u003cli\u003eFlanged design with 0.312 inch flange diameter and 0.055 inch flange thickness for positive seating\u003c\/li\u003e\n\u003cli\u003eCompact profile: 0.521 inch body length and 0.25 inch body diameter\u003c\/li\u003e\n\u003cli\u003eNo locking element, providing free spring-loaded plunger action\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or new-installation spring plunger for light end force press fit applications in precision mechanical tooling and fixture assemblies.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by pressing the plunger body into a properly sized bore using a press or appropriate hand tools. Ensure the bore diameter and depth conform to the manufacturer specifications for a secure interference fit. Power down and de-energize any equipment before installing or servicing components in mechanical assemblies. Do not hammer the plunger directly on the nose or plunger projection, as this may damage the spring or nose element.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Diameter\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Length\u003c\/strong\u003e: 0.521 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlunger Diameter (Nose Diameter)\u003c\/strong\u003e: 0.168 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlunger Length\u003c\/strong\u003e: 0.576 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlunger Projection\u003c\/strong\u003e: 0.125 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Under Flange\u003c\/strong\u003e: 0.521 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlange Diameter\u003c\/strong\u003e: 0.312 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlange Thickness\u003c\/strong\u003e: 0.055 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: 6 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Material\u003c\/strong\u003e: Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNose Material\u003c\/strong\u003e: Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLocking Element\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Light End Force\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 pounds\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: SPFP54\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VLIER","offers":[{"title":"Default Title","offer_id":51972211343666,"sku":"SPFP54","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d93d99badf44e6e0b1a4b04b53e5d9a6.jpg?v=1789964563","url":"https:\/\/voomisupply.com\/products\/vlier-spfp54-press-fit-spring-plunger-stainless-steel","provider":"Voomi Supply","version":"1.0","type":"link"}