{"product_id":"gibraltar-57190g-threaded-spring-plunger-5-16-18","title":"Gibraltar 57190G Threaded Spring Plunger 5\/16-18","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GIBRALTAR 57190G is a threaded spring plunger designed for indexing, positioning, and locking applications in mechanical assemblies. It features a 5\/16-18 thread with a 1 inch thread length and a standard plunger projection of 3\/16 inches. The plunger tip is made from Delrin for low-friction contact, while the body is steel with a black finish for corrosion resistance. A built-in locking element secures the plunger in position once set. Initial end force is 1.5 pounds and final end force is 4.5 pounds, making it suitable for light-duty indexing and detent work. Machinists, toolmakers, and mechanical assemblers are the primary installers.\u003c\/p\u003e\n\u003cp\u003eThis spring plunger is used in fixtures, jigs, machine tools, and general industrial assemblies where repeatable positioning or light locking force is needed. The 5\/16-18 threaded body installs directly into a tapped hole. The Delrin nose protects mating surfaces from scoring during repeated engagement. Its compact form factor fits tight clearance applications where space is limited.\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 standard tapped-hole installation\u003c\/li\u003e\n  \u003cli\u003e3\/16 inch plunger projection for positive detent engagement\u003c\/li\u003e\n  \u003cli\u003e1.5 pound initial end force and 4.5 pound final end force for light-duty indexing\u003c\/li\u003e\n  \u003cli\u003eDelrin nose minimizes wear and protects mating surfaces\u003c\/li\u003e\n  \u003cli\u003eSteel body with black finish for durability\u003c\/li\u003e\n  \u003cli\u003eIntegrated locking element holds the plunger setting once adjusted\u003c\/li\u003e\n  \u003cli\u003e3\/32 inch hex drive for installation and adjustment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or new-installation threaded spring plunger for fixtures, jigs, and mechanical assemblies requiring a 5\/16-18 tapped hole.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation requires a properly tapped 5\/16-18 hole in the mating component. Use a 3\/32 inch hex key to drive and seat the plunger body. Ensure the assembly is de-energized and at rest before servicing any spring plunger in a loaded mechanism. Do not overtighten, as this can compress the internal spring beyond its working range and reduce end force.\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 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\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: Delrin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Black\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLocking Element\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHex Size\u003c\/strong\u003e: 3\/32 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTolerance\u003c\/strong\u003e: +0.0000 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.05 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: GIBRALTAR\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 57190G\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GIBRALTAR","offers":[{"title":"Default Title","offer_id":51703741546802,"sku":"57190G","price":35.33,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/42538ccc73a5e558154a507f9fb9ab08_4d05eb83-dcb5-4e08-9fb5-2e30d7d2a9c1.jpg?v=1788418341","url":"https:\/\/voomisupply.com\/products\/gibraltar-57190g-threaded-spring-plunger-5-16-18","provider":"Voomi Supply","version":"1.0","type":"link"}