{"product_id":"vlier-ph54a-threaded-spring-plunger-1-4-28-steel","title":"Vlier PH54A Threaded Spring Plunger 1\/4-28 Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VLIER PH54A is a standard threaded spring plunger designed to provide controlled, repeatable end force in positioning, indexing, and locking applications. It features a 1\/4-28 thread with a 1 inch thread length and a 0.118 inch maximum plunger diameter with a 3\/16 inch projection. The steel body and steel nose deliver consistent performance in moderate-duty industrial and mechanical assemblies. Initial end force is 3 pounds, with a midpoint force of 8 pounds and a final end force of 13 pounds, making it well suited for applications requiring progressive resistance through the plunger stroke. Machinists, toolmakers, and maintenance technicians are the primary installers of this type of component.\u003c\/p\u003e\u003cp\u003eThe PH54A is used in jigs, fixtures, machine tool components, and assembly tooling where a threaded plunger is needed to locate, retain, or lightly index a workpiece or moving part. It installs directly into a tapped 1\/4-28 through-hole or blind hole. The standard plunger length type makes it a straightforward fit in most off-the-shelf tooling plate and fixture block applications. No locking element is incorporated, so the plunger can be adjusted or removed with a hex key at the hex flat sized to 0.079 inches.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1\/4-28 thread with 1 inch thread length for standard tapped-hole installation\u003c\/li\u003e\n\u003cli\u003e3\/16 inch plunger projection with a stroke-progressive force range of 3 to 13 pounds\u003c\/li\u003e\n\u003cli\u003eSteel body and steel nose for durability in industrial tooling environments\u003c\/li\u003e\n\u003cli\u003eNo locking element  -  adjustable positioning without thread-locking compound required\u003c\/li\u003e\n\u003cli\u003e0.079 inch hex flat allows installation and removal with a standard hex key\u003c\/li\u003e\n\u003cli\u003eStandard plunger length type for broad compatibility with common fixture and jig configurations\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct-fit component for standard 1\/4-28 tapped-hole spring plunger applications in industrial jigs, fixtures, and machine tool assemblies.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by machinists or maintenance technicians using a hex key sized for the 0.079 inch hex flat. Ensure the receiving hole is tapped to 1\/4-28 and is clean and free of debris before threading in the plunger. Do not overtighten, as this can distort the body or affect plunger travel. No power source or lockout procedure is required for mechanical spring plunger installation.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/4-28\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: 0.117 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Plunger Diameter\u003c\/strong\u003e: 0.118 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\u003eMiddle End Force\u003c\/strong\u003e: 8 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinal End Force\u003c\/strong\u003e: 13 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHex Size\u003c\/strong\u003e: 0.079 inches\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\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: PH54A\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VLIER","offers":[{"title":"Default Title","offer_id":52057325961522,"sku":"PH54A","price":15.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6ffe0e870bd4ef2be590539fc196a090_9fa1f929-3432-40b3-a54a-cd9eb094c0ab.jpg?v=1790038816","url":"https:\/\/voomisupply.com\/products\/vlier-ph54a-threaded-spring-plunger-1-4-28-steel","provider":"Voomi Supply","version":"1.0","type":"link"}