{"product_id":"mitutoyo-64aaa212-thread-measuring-wire-40-tpi","title":"Mitutoyo 64AAA212 Thread Measuring Wire 40 Tpi","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe MITUTOYO 64AAA212 is a thread pitch diameter measuring wire designed for precise thread measurement in metrology and quality-control applications. Each wire measures 1.125 inches in length with a nominal best wire diameter of 0.01443 inches and a nominal constant of 0.0173 inches. Engineered for 40 TPI threads with a 0.03-inch pitch, these wires are used with the three-wire method to calculate the pitch diameter of threaded parts to a high degree of accuracy. This set contains 3 pieces. It is installed and used by machinists, tool and die makers, and quality-control technicians who require repeatable, traceable measurement results.\u003c\/p\u003e\u003cp\u003eThese measuring wires are suited for use in precision manufacturing environments including job shops, aerospace, and general machining operations where thread pitch diameter verification is required. They are specifically designed for use with thread plug gages and micrometer-based measurement setups applying the three-wire contact method. The 40 TPI specification makes them appropriate for measuring fine-thread fasteners and threaded components produced to Unified National thread standards.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e40 TPI thread pitch compatibility with 0.03-inch pitch for fine-thread measurement\u003c\/li\u003e\n\u003cli\u003eNominal best wire diameter of 0.01443 inches for accurate three-wire method results\u003c\/li\u003e\n\u003cli\u003eNominal constant of 0.0173 inches simplifies pitch diameter calculation\u003c\/li\u003e\n\u003cli\u003eWire length of 1.125 inches provides sufficient contact length for stable readings\u003c\/li\u003e\n\u003cli\u003eSet of 3 wires as required for the standard three-wire measurement method\u003c\/li\u003e\n\u003cli\u003eDesigned for use with thread plug gages and precision micrometers\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with thread plug gages and micrometer setups employing the three-wire pitch diameter measurement method on 40 TPI threaded components.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThread measuring wires are used by machinists and quality-control technicians — no power tools or electrical shutoff is required. Ensure the micrometer anvils and wire surfaces are clean and free of burrs before use to avoid measurement error. Handle wires carefully to prevent bending or surface damage, as deformation will compromise measurement accuracy. Follow your facility or inspection standard for proper three-wire calculation procedures.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Pitch\u003c\/strong\u003e: 40 TPI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePitch (Decimal Inch)\u003c\/strong\u003e: 0.03 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWire Length\u003c\/strong\u003e: 1.125 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal Best Wire Diameter\u003c\/strong\u003e: 0.01443 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal Constant\u003c\/strong\u003e: 0.0173 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePieces per Set\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor Use With\u003c\/strong\u003e: Thread Plug Gage\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: MITUTOYO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 64AAA212\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MITUTOYO","offers":[{"title":"Default Title","offer_id":51562236313906,"sku":"64AAA212","price":291.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/8eba27387717d9fcebcf334515511b42_4bdc606a-cde0-409d-9e34-c97781f1f00f.jpg?v=1786473709","url":"https:\/\/voomisupply.com\/products\/mitutoyo-64aaa212-thread-measuring-wire-40-tpi","provider":"Voomi Supply","version":"1.0","type":"link"}