{"product_id":"spi-21-262-1-roller-contact-point-dial-indicator","title":"Spi 21-262-1 Roller Contact Point Dial Indicator","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SPI 21-262-1 is a roller-style contact point designed for use with dial indicators in precision measurement applications. Threaded at 4-48 to meet AGD Group 1 industry standards, this contact point measures 0.5 inches in length and 3\/8 inches in diameter. It is constructed from steel for durability and consistent surface contact during inspection tasks. Metrology technicians, machinists, and quality control professionals install this type of accessory when a rolling contact surface is required to reduce drag and improve accuracy on moving or rotating workpieces.\u003c\/p\u003e\n\u003cp\u003eThis roller contact point is used in shop floor inspection, fixture-based measurement setups, and quality assurance workflows where standard ball or flat contact points are not appropriate. The roller tip minimizes friction when measuring along a moving surface, making it well suited for checking runout, surface variation, or linear travel on rotating shafts and cylindrical components. It is compatible with AGD Group 1 dial indicators that accept 4-48 threaded contact points.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eRoller-style contact reduces friction on moving or rotating surfaces during measurement\u003c\/li\u003e\n  \u003cli\u003e4-48 thread size conforms to AGD Group 1 industry designation\u003c\/li\u003e\n  \u003cli\u003eSteel construction provides wear resistance for repeated contact cycles\u003c\/li\u003e\n  \u003cli\u003e0.5 inch contact point length suits standard dial indicator stems\u003c\/li\u003e\n  \u003cli\u003e3\/8 inch roller diameter offers stable, consistent surface contact\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 machinists or metrology technicians using a contact point wrench or appropriate spanner to thread the point onto the indicator stem. Avoid overtightening, as the 4-48 thread is fine and can be damaged with excessive torque. Ensure the dial indicator is secured in its holder and zeroed after installing a new contact point before taking measurements.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eContact Point Style\u003c\/strong\u003e: Roller\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\u003eDiameter\u003c\/strong\u003e: 3\/8 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  \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: 21-262-1\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51690496917810,"sku":"21-262-1","price":40.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/2571d396fd390d6559c258591145dc1e.jpg?v=1788270571","url":"https:\/\/voomisupply.com\/products\/spi-21-262-1-roller-contact-point-dial-indicator","provider":"Voomi Supply","version":"1.0","type":"link"}