{"product_id":"setting-standards-for-screw-thread-micrometer-55","title":"Insize 55° Setting Standard for Screw Thread Micrometers 100–125 mm Series 3281-SP4","description":"\u003ch1\u003eInsize 55° Setting Standard\u003c\/h1\u003e\n\u003cp\u003eThe Insize 3281-SP4 is a 55° setting standard used to set and verify Insize 3281 series screw thread micrometers for 55° thread forms (e.g., Whitworth). It is an optional accessory matched to the 100–125 mm micrometer size and ensures accurate pitch-diameter measurements when a 55° thread angle is required.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications :\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart No:\u003c\/strong\u003e 3281-SP4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Micrometers:\u003c\/strong\u003e 3281-125A, 3281-S125\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRange:\u003c\/strong\u003e 100–125 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eL:\u003c\/strong\u003e 143 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eb:\u003c\/strong\u003e 70 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Angle:\u003c\/strong\u003e 55° setting standard (optional accessory)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasuring Tips\u003c\/strong\u003e: 6 pairs of measuring tips - metric and unified thread (60° thread angle) \n\u003cul\u003e\n\u003cli\u003e0.4-0.5mm\/ 64-48TPI, 0.6-0.9mm\/ 44-28TPI, 1-1.75mm\/ 24-14TPI, 2-3mm\/ 13-9TPI, 3.5-5mm\/8-5TPI, 5.5-7mm\/ 4.5-3.5TPI\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse With:\u003c\/strong\u003e Insize 3281 series screw thread micrometers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNotes:\u003c\/strong\u003e 60° setting standards are supplied with micrometers (except 0–25 mm); 55° standards like SP4 are optional.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrecisely matched to the 100–125 mm size, the INSIZE 3281-SP4 setting standard helps achieve reliable and repeatable measurements on 55° thread forms.\u003c\/p\u003e","brand":"INSIZE","offers":[{"title":"Default Title","offer_id":53000600944954,"sku":"3281-SP4","price":249.76,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0982\/5412\/7418\/files\/insize-measuring-equipment-insize-55-setting-standard-for-screw-thread-micrometers-100-125-mm-series-3281-sp4-4749555357912-1198292201_1ae18000-866c-4e6e-a5f5-71ea49691ebc.png?v=1778799576","url":"https:\/\/insizeaustralia.com.au\/products\/setting-standards-for-screw-thread-micrometer-55","provider":"INSIZE Australia","version":"1.0","type":"link"}