{"product_id":"spi-20-986-6-ball-contact-point-dial-indicator","title":"Spi 20-986-6 Ball Contact Point Dial Indicator","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SPI 20-986-6 is a ball-style contact point designed for use with dial indicators in precision measurement applications. Machined from chrome alloy steel, this contact point threads onto the indicator spindle via a 4-48 thread and extends 0.75 inches in length. The 7\/16-inch ball tip provides a consistent, repeatable contact surface for accurate readings on flat, curved, or irregular workpiece surfaces. It conforms to the AGD Group 1 industry designation, ensuring compatibility with standard dial indicator configurations used throughout machining, inspection, and metrology workflows. Machinists, quality control technicians, and tool-and-die professionals rely on this type of contact point for everyday gauging tasks.\u003c\/p\u003e\n\u003cp\u003eThis contact point is suited for use on the shop floor, in inspection rooms, and in field measurement settings. It is a direct replacement or supplemental contact point for AGD Group 1 dial indicators where a ball-tip geometry is required. Ball contact points are commonly selected when measuring curved surfaces, bores, or any feature where a flat or pointed tip would produce inconsistent contact. The 4-48 threaded base is the standard thread for AGD Group 1 dial indicator spindles.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eBall-style contact geometry for consistent contact on curved or irregular surfaces\u003c\/li\u003e\n  \u003cli\u003eChrome alloy steel construction for wear resistance and durability\u003c\/li\u003e\n  \u003cli\u003e0.75-inch contact point length with 7\/16-inch ball diameter\u003c\/li\u003e\n  \u003cli\u003e4-48 thread size matches AGD Group 1 dial indicator spindles\u003c\/li\u003e\n  \u003cli\u003eMeets AGD Group 1 industry designation for standardized fitment\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 standard 4-48 threaded contact point.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by hand-threading the contact point onto the dial indicator spindle. Power down or remove any automated measurement system before swapping contact points to avoid damage to the indicator mechanism. Do not overtighten, as the 4-48 thread is fine and can strip under excessive torque. Verify indicator zero after replacing the contact point to confirm proper seating and accurate readings.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\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: 0.4375 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\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: 20-986-6\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51700673184050,"sku":"20-986-6","price":24.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/fdcd4002482676d475fb5fe03a2fa547.jpg?v=1788393611","url":"https:\/\/voomisupply.com\/products\/spi-20-986-6-ball-contact-point-dial-indicator","provider":"Voomi Supply","version":"1.0","type":"link"}