{"product_id":"spi-20-985-8-ball-contact-point-dial-indicators","title":"Spi 20-985-8 Ball Contact Point Dial Indicators","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SPI 20-985-8 is a ball-style contact point designed for use with dial indicators in precision measurement applications. Machined from chrome alloy steel, this contact point measures 0.75 inches in length with a ball diameter of 0.4063 inches. It threads directly onto compatible dial indicators using a 4-48 thread. Machinists, calibration technicians, and tool room professionals rely on this type of contact point when measuring workpieces that require consistent ball-tip contact across curved or irregular surfaces. The chrome alloy steel construction provides durability and resistance to wear under repeated measuring cycles.\u003c\/p\u003e\u003cp\u003eThis contact point is suited for inspection and measurement setups in manufacturing, tooling, and quality control environments. It conforms to the AGD Group 1 industry designation, making it appropriate for standard AGD-compliant dial indicators used in both production and bench settings. Its compact size and standard thread make it a practical replacement or spare for everyday indicator use.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eBall-style contact tip for consistent contact on curved and irregular surfaces\u003c\/li\u003e\n\u003cli\u003eChrome alloy steel construction for durability and wear resistance\u003c\/li\u003e\n\u003cli\u003e0.75 inch contact point length for standard reach applications\u003c\/li\u003e\n\u003cli\u003eBall diameter of 0.4063 inches for broad surface contact\u003c\/li\u003e\n\u003cli\u003e4-48 thread size for direct installation on compatible dial indicators\u003c\/li\u003e\n\u003cli\u003eMeets AGD Group 1 industry designation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with dial indicators accepting a 4-48 threaded contact point and conforming to AGD Group 1 specifications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by threading the contact point directly into the dial indicator spindle tip by hand. Avoid using excessive force when threading to prevent damage to the 4-48 threads on either the contact point or the indicator. Verify the contact point is fully seated and secure before use in any measurement application. Follow indicator manufacturer guidelines for contact point replacement and handling.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eContact Point Style\u003c\/strong\u003e: Ball\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoint Material\u003c\/strong\u003e: Chrome Alloy Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContact Point Length\u003c\/strong\u003e: 0.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBall Diameter\u003c\/strong\u003e: 0.4063 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 4-48\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\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 20-985-8\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51698587468082,"sku":"20-985-8","price":24.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/b3a1a1aebfb1410b7571598f87d80761.jpg?v=1788365103","url":"https:\/\/voomisupply.com\/products\/spi-20-985-8-ball-contact-point-dial-indicators","provider":"Voomi Supply","version":"1.0","type":"link"}