{"product_id":"spi-21-276-1-drop-indicator-radius-contact-point","title":"Spi 21-276-1 Drop Indicator Radius Contact Point","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SPI 21-276-1 is a radius-style contact point designed for use with dial indicators. It features a 4-48 threaded shank that threads directly into the indicator spindle, replacing or supplementing the standard contact point for applications that require a rounded tip. The contact tip diameter measures 0.183 inches and the contact point length is 0.6 inches. The body is machined from steel for wear resistance under repeated measurement cycles. This accessory is installed by metrology technicians, machinists, and quality control personnel who need a radius tip geometry for part surface contact.\u003c\/p\u003e\n\u003cp\u003eThis contact point is suited for use in inspection, gauging, and production measurement environments where a radius tip provides better contact on curved or irregular workpiece surfaces. It conforms to AGD Group 1 standards, making it compatible with standard AGD Group 1 dial indicators. Typical applications include surface runout checks, bore measurements, and fixture-based inspection setups on the shop floor or in a metrology lab.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eRadius contact point geometry for consistent contact on curved and contoured surfaces\u003c\/li\u003e\n  \u003cli\u003e4-48 threaded shank for direct installation into AGD Group 1 dial indicator spindles\u003c\/li\u003e\n  \u003cli\u003eSteel construction for durability and wear resistance during repeated measurement use\u003c\/li\u003e\n  \u003cli\u003e0.183 inch tip diameter and 0.6 inch contact point length for precise fitment requirements\u003c\/li\u003e\n  \u003cli\u003eAGD Group 1 industry designation ensures broad compatibility with standard dial indicators\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with AGD Group 1 dial indicators accepting a 4-48 threaded contact point.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by hand or with a contact point wrench — power down or zero out the indicator before swapping contact points to avoid measurement errors. Thread the 4-48 shank carefully to avoid cross-threading the indicator spindle. Follow the indicator manufacturer's guidance on contact point torque to avoid spindle damage.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eContact Point Style\u003c\/strong\u003e: Radius\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: 0.6 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTip Diameter\u003c\/strong\u003e: 0.183 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePoint Material\u003c\/strong\u003e: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIndustry Designation\u003c\/strong\u003e: AGD Group 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFor Use With\u003c\/strong\u003e: Dial Indicators\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.1 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: SPI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 21-276-1\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51689166700850,"sku":"21-276-1","price":36.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/7f68cbb0779ffa725fee01f2596f09cc.jpg?v=1788255492","url":"https:\/\/voomisupply.com\/products\/spi-21-276-1-drop-indicator-radius-contact-point","provider":"Voomi Supply","version":"1.0","type":"link"}