{"product_id":"spi-21-249-8-flat-contact-point-dial-indicator","title":"Spi 21-249-8 Flat Contact Point Dial Indicator","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SPI 21-249-8 is a flat contact point designed for use with dial indicators in precision measurement applications. Machined from black oxide steel, this contact point threads onto AGD Group 1 dial indicators using a 4-48 thread. The flat contact surface measures 3\/16 inches (0.1875 inches) in diameter, and the contact point length is 1\/2 inch (0.5 inches). Weighing 0.1 pounds, it is a compact, direct-replacement accessory suited for machinists, tool-and-die makers, and quality control technicians who need a reliable flat-tip configuration for surface or bore measurement work.\u003c\/p\u003e\n\u003cp\u003eThis contact point is intended for precision measurement setups where a flat contact profile is required. Typical applications include surface plate inspection, fixture checking, and machine alignment tasks where the standard contact point must be swapped for a flat-tip style. The 4-48 thread is the standard thread used across AGD Group 1 dial indicators, making this a straightforward replacement or spare for shop-floor and inspection-room use alike.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eFlat contact point style for consistent surface contact during measurement\u003c\/li\u003e\n  \u003cli\u003eBlack oxide steel construction for durability and corrosion resistance\u003c\/li\u003e\n  \u003cli\u003e4-48 thread — standard for AGD Group 1 dial indicators\u003c\/li\u003e\n  \u003cli\u003eContact point length of 0.5 inches (1\/2 inch) for standard reach\u003c\/li\u003e\n  \u003cli\u003e3\/16 inches (0.1875 inches) diameter contact face\u003c\/li\u003e\n  \u003cli\u003eLightweight at 0.1 pounds — does not affect indicator spindle movement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with AGD Group 1 dial indicators that accept a 4-48 threaded contact point. Verify thread size and group designation on your indicator before installation.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eContact point replacement on dial indicators is typically performed by metrology technicians or machinists. Before removing or installing a contact point, secure the indicator in a holder or fixture to avoid dropping or damaging the instrument. Thread the contact point in by hand and snug gently — do not over-torque, as the fine 4-48 thread can strip. Verify the indicator reads zero correctly on a reference surface after installation.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eContact Point Style\u003c\/strong\u003e: Flat\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePoint Material\u003c\/strong\u003e: Black Oxide Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 4-48\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eContact Point Length\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eContact Point Diameter\u003c\/strong\u003e: 0.1875 inches (3\/16 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIndustry Designation\u003c\/strong\u003e: AGD Group 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.1 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: SPI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 21-249-8\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51710914265394,"sku":"21-249-8","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/07162ae81d53edb4311c1575594fbab7.jpg?v=1788472269","url":"https:\/\/voomisupply.com\/products\/spi-21-249-8-flat-contact-point-dial-indicator","provider":"Voomi Supply","version":"1.0","type":"link"}