{"product_id":"irwin-hanson-fractional-tap","title":"Irwin Hanson Fractional Hand Tap 4-Flute Class 2B","description":"\u003ch2\u003eIrwin Hanson Fractional Hand Tap — 4-Flute Class 2B\u003c\/h2\u003e\n\n\u003cp\u003eThe Irwin Hanson Fractional Hand Tap is built for professionals who need reliable threading in routine maintenance, repair, and rethreading applications. Four straight flutes are precision-ground for rapid chip removal, keeping cuts clean and efficient across a wide variety of materials. Produces a Class 2B thread — the standard tolerance for most general-purpose fastener applications where high precision is not critical.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e4 straight flutes ground for rapid chip removal and efficient threading\u003c\/li\u003e\n\u003cli\u003eProduces Class 2B thread — ideal for general maintenance and repair\u003c\/li\u003e\n\u003cli\u003eStraight shank for use with standard tap handles and wrenches\u003c\/li\u003e\n\u003cli\u003e3 to 5 threads chamfered for easy starting\u003c\/li\u003e\n\u003cli\u003eTextured ambidextrous grip for ergonomic, sure-handed control\u003c\/li\u003e\n\u003cli\u003eDesigned for hand threading in a variety of materials\u003c\/li\u003e\n\u003cli\u003eIdeal for routine maintenance, repair work, and rethreading\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpec\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Class\u003c\/td\u003e\n\u003ctd\u003e2B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlutes\u003c\/td\u003e\n\u003ctd\u003e4 (straight)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChamfer\u003c\/td\u003e\n\u003ctd\u003e3–5 threads\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Type\u003c\/td\u003e\n\u003ctd\u003eStraight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAvailable Size\u003c\/td\u003e\n\u003ctd\u003e5\/16-18\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVendor\u003c\/td\u003e\n\u003ctd\u003eIrwin Hanson\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eOHL-95105\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarcode\u003c\/td\u003e\n\u003ctd\u003e042526081279\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is a Class 2B thread?\u003c\/strong\u003e\u003cbr\u003eClass 2B is the most common thread tolerance class for general-purpose fasteners. It provides a moderate fit — not too loose, not too tight — making it the standard for routine maintenance, repair, and rethreading work where high precision is not required.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat materials can this tap be used on?\u003c\/strong\u003e\u003cbr\u003eThe Irwin Hanson Fractional Hand Tap is designed for hand threading in a variety of materials including mild steel, aluminum, brass, and plastics — making it a versatile choice for maintenance and repair shops.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat does \"4 straight flutes\" mean?\u003c\/strong\u003e\u003cbr\u003eStraight flutes run parallel to the tap's axis and are ground to efficiently cut threads while channeling chips away from the cutting zone. Four flutes provide a good balance of chip clearance and thread-cutting strength for hand tapping applications.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is the chamfer on this tap?\u003c\/strong\u003e\u003cbr\u003eThis tap has a 3 to 5 thread chamfer, which means the first few threads are tapered to help guide the tap into the hole and start the thread easily without binding.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs this tap suitable for arborist or utility field use?\u003c\/strong\u003e\u003cbr\u003eYes — this tap is well-suited for field repair and maintenance work, including rethreading damaged bolt holes on climbing hardware, pole equipment, and utility fixtures where a standard Class 2B fit is acceptable.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat size is available?\u003c\/strong\u003e\u003cbr\u003eThis listing is for the 5\/16-18 size (5\/16\" diameter, 18 threads per inch — a common UNC fractional thread size used in general hardware and utility applications).\u003c\/p\u003e","brand":"Irwin Hanson","offers":[{"title":"5\/16-18","offer_id":53528075534655,"sku":"OHL-95105","price":5.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0276\/2057\/3268\/files\/6011035.png?v=1780942141","url":"https:\/\/www.bartlettman.com\/products\/irwin-hanson-fractional-tap","provider":"Bartlett Arborist Supply","version":"1.0","type":"link"}