{"product_id":"vlier-sssd54a-threaded-spring-plunger-1-4-28-stainless-steel","title":"Vlier SSSD54A Threaded Spring Plunger 1\/4-28 Stainless Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VLIER SSSD54A is a threaded spring plunger designed for precise, repeatable positioning and indexing applications in mechanical assemblies. It features a 1\/4-28 unified fine thread with a 1 inch thread length, a stainless steel body for corrosion resistance, and a Delrin nose that allows smooth contact with mating surfaces without marring them. The plunger delivers 3 pounds of initial end force and 13 pounds of final end force, making it suitable for light-to-moderate detent and locating functions. This part is installed by machinists, toolmakers, and mechanical technicians working on fixtures, jigs, and precision assemblies.\u003c\/p\u003e\u003cp\u003eThe SSSD54A is used in industrial and manufacturing environments where a compact, threaded detent or positioning element is required. Its 1\/4-28 thread makes it compatible with standard tapped holes in tooling plates, fixture bodies, and machine frames. The standard plunger length type and 3\/16 inch projection suit applications where a short, controlled engagement stroke is needed. No locking element is present, so the plunger threads freely into the tapped hole without a secondary locking feature.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1\/4-28 unified fine thread for installation into standard tapped holes\u003c\/li\u003e\n\u003cli\u003eStainless steel body provides corrosion resistance in demanding environments\u003c\/li\u003e\n\u003cli\u003eDelrin nose minimizes surface marring on mating components\u003c\/li\u003e\n\u003cli\u003e3 pound initial end force and 13 pound final end force for light-to-moderate detent loads\u003c\/li\u003e\n\u003cli\u003e3\/16 inch plunger projection suits short-stroke positioning applications\u003c\/li\u003e\n\u003cli\u003eNo locking element  -  threads in and out freely for easy adjustment or replacement\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard threaded spring plunger for use in any application accepting a 1\/4-28 tapped hole where a spring-loaded detent or positioning element with a Delrin nose is required.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by hand or with a hex key or spanner wrench appropriate for the plunger body drive feature. Ensure the mating tapped hole is clean and free of debris before threading in the plunger. No thread-locking compound is typically required unless the application involves significant vibration. Always de-energize or lock out any associated machinery before servicing or replacing spring plunger components in live fixtures or assemblies.\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: 0.116 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\u003eFinal End Force\u003c\/strong\u003e: 13 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: Delrin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlunger Length Type\u003c\/strong\u003e: Standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLocking Element\u003c\/strong\u003e: No\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: SSSD54A\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VLIER","offers":[{"title":"Default Title","offer_id":51980364972338,"sku":"SSSD54A","price":17.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/393dcf3204da4712b94365b4139976b3_11e87cb2-a657-4148-b603-18c63d460246.jpg?v=1789981488","url":"https:\/\/voomisupply.com\/products\/vlier-sssd54a-threaded-spring-plunger-1-4-28-stainless-steel","provider":"Voomi Supply","version":"1.0","type":"link"}