{"product_id":"spi-20-341-4-cupped-ball-contact-point-4-48-4mm-dial-indicator","title":"Spi 20-341-4 Cupped Ball Contact Point 4-48 4mm Dial Indicator","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SPI 20-341-4 is a cupped ball contact point designed for use with dial indicators in precision measurement applications. Machined from solid carbide, this contact point threads into standard dial indicator stems using a 4-48 thread and features a cupped ball tip geometry that seats consistently against rounded or spherical workpiece surfaces. The contact point measures 0.5 inches in length and 4 mm in diameter, conforming to AGD Group 1 industry standards. It is a direct drop-in replacement for worn or damaged contact points on compatible dial indicators used in manufacturing, machining, and metrology environments.\u003c\/p\u003e\n\u003cp\u003eThis contact point is suited for inspection setups, surface plate work, and machine tool gauging where a cupped ball tip improves repeatability on curved or ball-ended features. It is commonly used in toolrooms, quality labs, and on the shop floor wherever AGD Group 1 dial indicators are in service. Licensed metrologists, machinists, and quality control technicians typically handle contact point replacement as part of routine indicator maintenance.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide construction for wear resistance and long service life in high-cycle measurement applications\u003c\/li\u003e\n  \u003cli\u003eCupped ball tip geometry for consistent seating on convex and spherical workpiece surfaces\u003c\/li\u003e\n  \u003cli\u003e4-48 thread size compatible with AGD Group 1 dial indicators\u003c\/li\u003e\n  \u003cli\u003e0.5 inch contact point length for standard reach applications\u003c\/li\u003e\n  \u003cli\u003e4 mm tip diameter provides stable contact on a range of feature sizes\u003c\/li\u003e\n  \u003cli\u003eConforms to 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 dial indicators accepting a 4-48 threaded contact point, conforming to AGD Group 1 industry standards.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eContact point replacement is performed by qualified machinists or metrologists using appropriate spanner wrenches or contact point tools to avoid damaging the indicator stem. Zero the indicator after replacing the contact point and verify repeatability before returning the instrument to service. Handle solid carbide tips carefully to avoid chipping, and do not overtighten the threaded connection into the indicator stem.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eContact Point Style\u003c\/strong\u003e: Cupped Ball\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePoint Material\u003c\/strong\u003e: Solid Carbide\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\u003eTip Diameter\u003c\/strong\u003e: 4 mm\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: 20-341-4\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51722090774834,"sku":"20-341-4","price":16.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/2854c09c404b7437e94d2063e5fa9225.jpg?v=1788585510","url":"https:\/\/voomisupply.com\/products\/spi-20-341-4-cupped-ball-contact-point-4-48-4mm-dial-indicator","provider":"Voomi Supply","version":"1.0","type":"link"}