{"product_id":"spi-21-065-8-ball-contact-point-carbide-0-078-in","title":"Spi 21-065-8 Ball Contact Point Carbide 0.078 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SPI 21-065-8 is a carbide ball contact point designed for use with precision dial test indicators. It provides a hardened, wear-resistant contact surface for accurate and repeatable surface measurement. The ball tip measures 0.078 inches in diameter, and the overall contact point length is 1.75 inches. Carbide construction ensures long service life in demanding shop environments where frequent contact with metal surfaces would rapidly wear a softer tip. This contact point is installed by metrology technicians, machinists, and quality control personnel working with dial indicator setups on surface plates, machine tools, or inspection fixtures.\u003c\/p\u003e\u003cp\u003eThis contact point is intended for precision measurement applications in machine shops, tool rooms, and quality inspection environments. It is suited for runout checks, surface deviation measurement, and bore alignment tasks where a small-diameter ball tip is needed to reach tight features or follow fine surface contours. The 0.078-inch ball diameter allows contact in areas where a larger tip would make inaccurate readings due to geometry interference.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCarbide ball tip for extended wear resistance in high-use measurement environments\u003c\/li\u003e\n\u003cli\u003e0.078 inch ball diameter for access to tight features and fine surface contours\u003c\/li\u003e\n\u003cli\u003e1.75 inch contact point length provides reach for recessed measurement locations\u003c\/li\u003e\n\u003cli\u003eDesigned for use with Interapid test indicators\u003c\/li\u003e\n\u003cli\u003eCompact and lightweight at 0.1 pounds for easy handling and replacement\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with Interapid test indicators as stated by the manufacturer.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eContact point replacement is performed by metrology technicians or machinists and requires no special tools beyond those used to thread or seat the contact into the indicator stem. Always handle carbide tips carefully to avoid chipping the ball surface against hard objects during installation. Verify the contact point is fully seated and secure before taking measurements to prevent false readings or damage to the indicator.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBall Diameter\u003c\/strong\u003e: 0.078 inches (2.00 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContact Point Length\u003c\/strong\u003e: 1.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTip Diameter\u003c\/strong\u003e: 0.078 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContact Point Material\u003c\/strong\u003e: Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions\u003c\/strong\u003e: 1 inch H x 0.25 inch W x 0.25 inch L\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.1 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor Use With\u003c\/strong\u003e: Interapid Test Indicators\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 41111600\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: 21-065-8\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51723551179058,"sku":"21-065-8","price":20.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/9b41db80525fc656f05943ae9a9ac0d5.jpg?v=1788606109","url":"https:\/\/voomisupply.com\/products\/spi-21-065-8-ball-contact-point-carbide-0-078-in","provider":"Voomi Supply","version":"1.0","type":"link"}