{"product_id":"gibraltar-34247-locking-plunger-1-2-13-thread-steel","title":"Gibraltar 34247 Locking Plunger 1\/2-13 Thread Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe GIBRALTAR 34247 is a locking knob handle plunger with a knobless threaded stud design, built for precision indexing and positioning applications in industrial and mechanical assemblies. It features a 1\/2-13 inch thread size with a 7\/8 inch thread length and a stud thread size of 3\/8-16. The plunger delivers an initial end force of 0.75 pounds and a final end force of 4 pounds, providing reliable spring-loaded retention. Constructed from steel with a zinc-plated finish, it offers corrosion resistance suited for shop floor and light industrial environments. Licensed tradespeople and machine builders install this type of component in fixtures, jigs, and positioning assemblies.\u003c\/p\u003e\u003cp\u003eThe GIBRALTAR 34247 is suited for use in mechanical fixtures, tooling setups, and industrial positioning equipment where repeatable spring-loaded plunger engagement is required. The knobless threaded stud configuration allows it to be driven or adjusted with a wrench or tool rather than by hand, making it appropriate for applications where a flush or recessed profile is preferred. It is sold individually and is a direct-fit fastener-style component for standard threaded bores.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eLocking plunger design with built-in locking element for positive retention\u003c\/li\u003e\n\u003cli\u003e1\/2-13 thread size with 7\/8 inch thread length for standard threaded bore fitment\u003c\/li\u003e\n\u003cli\u003eSpring end force range of 0.75 pounds initial to 4 pounds final\u003c\/li\u003e\n\u003cli\u003eKnobless threaded stud style allows tool-driven installation and adjustment\u003c\/li\u003e\n\u003cli\u003eSteel construction with zinc-plated finish for corrosion resistance\u003c\/li\u003e\n\u003cli\u003eMaximum plunger diameter of 0.31 inches with a tolerance of plus 0.001 inches\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in standard 1\/2-13 threaded bores in industrial fixtures, jigs, tooling plates, and mechanical positioning assemblies requiring a spring-loaded locking plunger.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by threading the stud into a pre-tapped 1\/2-13 bore using a wrench on the stud flats. Ensure the mating bore is clean and free of debris before installation. Verify plunger projection clearance before final torque to avoid binding. Follow the equipment manufacturer's assembly procedures and applicable ASME or facility maintenance standards when integrating into production fixtures.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/2-13\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.875 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStud Thread Size\u003c\/strong\u003e: 3\/8-16\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInitial End Force\u003c\/strong\u003e: 0.75 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinal End Force\u003c\/strong\u003e: 4 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlunger Projection\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlunger Length\u003c\/strong\u003e: 1.937 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Plunger Diameter\u003c\/strong\u003e: 0.31 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlunger Diameter Tolerance\u003c\/strong\u003e: plus 0.001 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Under Head\/Shoulder\u003c\/strong\u003e: 1.125 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Height\u003c\/strong\u003e: 0.4375 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKnob Style\u003c\/strong\u003e: Threaded Stud without Knob\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLocking Element\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlunger Type\u003c\/strong\u003e: Locking\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Zinc-Plated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.05 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 34247\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GIBRALTAR","offers":[{"title":"Default Title","offer_id":51715694788914,"sku":"34247","price":49.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/fdff2aaf08449c1f0d21f5559851277b.jpg?v=1788517336","url":"https:\/\/voomisupply.com\/products\/gibraltar-34247-locking-plunger-1-2-13-thread-steel","provider":"Voomi Supply","version":"1.0","type":"link"}