{"product_id":"tungaloy-16ir-2-0iso-b-ah725-internal-threading-carbide-insert","title":"Tungaloy 16IR 2.0ISO-B AH725 Internal Threading Carbide Insert (10pcs)","description":"\u003cdiv style=\"font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; color: #333; line-height: 1.6; max-width: 950px; margin: auto; border: 1px solid #e0e0e0; background-color: #fff; border-radius: 8px; overflow: hidden; user-select: none;\"\u003e\n\u003cdiv style=\"background-color: #47479f; color: #ffffff; padding: 45px 20px; text-align: center;\"\u003e\n\u003ch1 style=\"margin: 0; font-size: 28px; font-weight: bold; letter-spacing: 1px;\"\u003e\u003cspan style=\"color: rgb(255, 255, 255);\"\u003eTUNGALOY 16IR 2.0ISO-B AH725\u003c\/span\u003e\u003c\/h1\u003e\n\u003cp style=\"margin: 10px 0 0; font-size: 18px; opacity: 0.9;\"\u003eInternal ISO Metric Specialist | 2.0mm Pitch | AH725 Nano-PVD Grade\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"padding: 30px;\"\u003e\n\u003ch2 style=\"color: #47479f; border-bottom: 3px solid #47479F; display: inline-block; padding-bottom: 5px;\"\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eTungaloy 16IR 2.0ISO-B AH725\u003c\/strong\u003e is a high-performance \u003cstrong\u003einternal threading insert\u003c\/strong\u003e engineered for 2.0mm pitch ISO metric threads, the standard for M14 and M16 coarse internal fasteners. This \u003cstrong\u003eindexable carbide insert\u003c\/strong\u003e features Tungaloy's premium \u003cstrong\u003eAH725 PVD coated carbide\u003c\/strong\u003e, a grade famous for its extreme edge toughness and heat resistance during \u003cstrong\u003eCNC machining\u003c\/strong\u003e. The integrated \"-B\" chipbreaker geometry is a game-changer for \u003cstrong\u003einternal threading\u003c\/strong\u003e, ensuring that chips are tightly curled and broken within the bore to prevent damage to the thread flanks. Made in Japan, this insert is the professional choice for \u003cstrong\u003eprecision machining\u003c\/strong\u003e in stainless steel, carbon steel, and high-strength alloys.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"padding: 30px; background-color: #f4f4fb;\"\u003e\n\u003ch2 style=\"color: #47479f; text-align: center; margin-bottom: 25px;\"\u003eTechnical Designation Breakdown\u003c\/h2\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; justify-content: center; gap: 10px;\"\u003e\n\u003cdiv style=\"border: 2px solid #47479F; padding: 10px; text-align: center; min-width: 65px; background: white; border-radius: 4px;\"\u003e\n\u003cb style=\"color: #47479f; font-size: 18px;\"\u003e16\u003c\/b\u003e\u003cbr\u003e\u003csmall\u003eSize (IC)\u003c\/small\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 2px solid #47479F; padding: 10px; text-align: center; min-width: 65px; background: white; border-radius: 4px;\"\u003e\n\u003cb style=\"color: #47479f; font-size: 18px;\"\u003eI\u003c\/b\u003e\u003cbr\u003e\u003csmall\u003eInternal\u003c\/small\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 2px solid #47479F; padding: 10px; text-align: center; min-width: 65px; background: white; border-radius: 4px;\"\u003e\n\u003cb style=\"color: #47479f; font-size: 18px;\"\u003eR\u003c\/b\u003e\u003cbr\u003e\u003csmall\u003eRight Hand\u003c\/small\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 2px solid #47479F; padding: 10px; text-align: center; min-width: 65px; background: white; border-radius: 4px;\"\u003e\n\u003cb style=\"color: #47479f; font-size: 18px;\"\u003e2.0\u003c\/b\u003e\u003cbr\u003e\u003csmall\u003ePitch (mm)\u003c\/small\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 2px solid #47479F; padding: 10px; text-align: center; min-width: 65px; background: white; border-radius: 4px;\"\u003e\n\u003cb style=\"color: #47479f; font-size: 18px;\"\u003eISO\u003c\/b\u003e\u003cbr\u003e\u003csmall\u003eMetric\u003c\/small\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 2px solid #47479F; padding: 10px; text-align: center; min-width: 65px; background: white; border-radius: 4px;\"\u003e\n\u003cb style=\"color: #47479f; font-size: 18px;\"\u003eB\u003c\/b\u003e\u003cbr\u003e\u003csmall\u003eChipbreaker\u003c\/small\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"padding: 30px;\"\u003e\n\u003ch2 style=\"color: #47479f;\"\u003eTechnical Specifications: Metric vs. Imperial\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x: auto;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin-top: 15px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #47479f; color: white;\"\u003e\n\u003cth style=\"padding: 12px; border: 1px solid #ddd; text-align: left;\"\u003eTechnical Feature\u003c\/th\u003e\n\u003cth style=\"padding: 12px; border: 1px solid #ddd; text-align: left;\"\u003eMetric (ISO)\u003c\/th\u003e\n\u003cth style=\"padding: 12px; border: 1px solid #ddd; text-align: left;\"\u003eImperial (TPI)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #ddd; font-weight: bold;\"\u003eThread Pitch\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003e2.0 mm\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003e12.7 Threads Per Inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #ddd; font-weight: bold;\"\u003eInscribed Circle (IC)\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003e9.525 mm\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003e3\/8 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #ddd; font-weight: bold;\"\u003eApplication\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003eInternal M14\/M16\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003eHeavy Duty Internal Coarse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin-top: 20px;\"\u003e\u003cstrong\u003ePitch Selection Guidance:\u003c\/strong\u003e The 2.0ISO is a \u003cstrong\u003eFull Profile\u003c\/strong\u003e insert. This is critical for \u003cstrong\u003einternal threading\u003c\/strong\u003e as it forms the complete 60° thread—cutting the crest and root simultaneously. This ensures the \u003cstrong\u003einternal diameter (ID)\u003c\/strong\u003e is perfectly calibrated to ISO standards, guaranteeing exact clearance and fit for M14\/M16 fasteners without the need for manual cresting or secondary boring operations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"padding: 30px;\"\u003e\n\u003ch3 style=\"color: #47479f;\"\u003eMaterial: AH725 PVD High-Grade Carbide\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eAH725 grade\u003c\/strong\u003e is Tungaloy's premium choice for \u003cstrong\u003estainless steel turning\u003c\/strong\u003e and threading. It features a micro-grain substrate that resists chipping, paired with a nano-multilayered PVD coating. This \u003cstrong\u003elong-tail keywords\u003c\/strong\u003e industry favorite ensures stable \u003cstrong\u003etool life\u003c\/strong\u003e and exceptional surface quality even in restricted bores or difficult-to-reach internal profiles.\u003c\/p\u003e\n\u003ch3 style=\"color: #47479f;\"\u003e-B Geometry: Advanced Chip Control (槽型)\u003c\/h3\u003e\n\u003cp\u003eInternal threading often suffers from chips \"bird-nesting\" inside the workpiece. The \u003cstrong\u003e-B chipbreaker\u003c\/strong\u003e geometry is engineered to curl chips tightly, snapping them into small pieces that are easily flushed out by coolant. This protects the internal finish and prevents tool breakage during \u003cstrong\u003eCNC machining\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin: 0 30px; padding: 25px; background-color: #47479f; color: white; border-radius: 12px;\"\u003e\n\u003ch3 style=\"margin-top: 0; border-bottom: 1px solid rgba(255,255,255,0.4); padding-bottom: 10px;\"\u003eRecommended Cutting Parameters\u003c\/h3\u003e\n\u003cp\u003eOptimized for \u003cstrong\u003eP (Steel) and M (Stainless Steel)\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul style=\"list-style-type: disc; padding-left: 20px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Speed (Vc):\u003c\/strong\u003e 80 - 150 m\/min (260 - 490 SFM)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal Radial Depth:\u003c\/strong\u003e 1.23 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Passes:\u003c\/strong\u003e 10 - 16 passes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"font-size: 13px; font-style: italic;\"\u003e*Pro Tip: For 2.0mm internal pitch, use a constant volume infeed or a modified flank infeed (29°) to minimize vibration in boring bars.*\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"padding: 30px; background-color: #f9f9f9;\"\u003e\n\u003ch2 style=\"color: #47479f; text-align: center; margin-bottom: 30px;\"\u003eGlobal Verified Reviews\u003c\/h2\u003e\n\u003cdiv style=\"border: 2px solid #47479F; background: white; padding: 15px; margin-bottom: 15px; border-radius: 4px;\"\u003e\n\u003cp\u003e⭐⭐⭐⭐⭐ \u003cstrong\u003e\"Perfect for M16 threads\"\u003c\/strong\u003e - \u003cem\u003eLukas V., Germany\u003c\/em\u003e\u003cbr\u003e\"Consistent 2.0mm pitch. The AH725 grade lasts much longer than other brands we've tried in alloy steel.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 2px solid #47479F; background: white; padding: 15px; margin-bottom: 15px; border-radius: 4px;\"\u003e\n\u003cp\u003e⭐⭐⭐⭐⭐ \u003cstrong\u003e\"Great for blind holes\"\u003c\/strong\u003e - \u003cem\u003eKenji O., Japan\u003c\/em\u003e\u003cbr\u003e\"The -B chipbreaker is excellent. Chips are small and don't get stuck in the bore. Original Tungaloy quality.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 2px solid #47479F; background: white; padding: 15px; margin-bottom: 15px; border-radius: 4px;\"\u003e\n\u003cp\u003e⭐⭐⭐⭐ \u003cstrong\u003e\"Smooth Finish\"\u003c\/strong\u003e - \u003cem\u003eDave R., USA\u003c\/em\u003e\u003cbr\u003e\"High quality internal threads every time. No vibration even with a longer overhang on our boring bar.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 2px solid #47479F; background: white; padding: 15px; margin-bottom: 15px; border-radius: 4px;\"\u003e\n\u003cp\u003e⭐⭐⭐⭐⭐ \u003cstrong\u003e\"Highly Reliable\"\u003c\/strong\u003e - \u003cem\u003eFabio L., Italy\u003c\/em\u003e\u003cbr\u003e\"Mirror-like finish on the thread flanks. Fast shipping and the product is definitely authentic.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 2px solid #47479F; background: white; padding: 15px; border-radius: 4px;\"\u003e\n\u003cp\u003e⭐⭐⭐⭐⭐ \u003cstrong\u003e\"Professional Choice\"\u003c\/strong\u003e - \u003cem\u003eSarah J., UK\u003c\/em\u003e\u003cbr\u003e\"The full profile is a huge time saver. Perfect fit for our SNR16 holders. Highly recommend for CNC shops.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"padding: 30px;\"\u003e\n\u003ch2 style=\"color: #47479f; text-align: center;\"\u003eTechnical Q\u0026amp;A\u003c\/h2\u003e\n\u003cdiv style=\"margin-top: 25px;\"\u003e\n\u003cdiv style=\"border-left: 6px solid #47479F; background: #f4f4ff; padding: 15px; margin-bottom: 15px; border-radius: 0 8px 8px 0;\"\u003e\n\u003cp style=\"font-weight: bold; margin: 0; color: #47479f;\"\u003eQ: Which boring bar does this insert fit?\u003c\/p\u003e\n\u003cp style=\"margin: 10px 0 0;\"\u003eA: It fits all standard **SNR** internal threading bars with a size 16 pocket (3\/8\" IC).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left: 6px solid #47479F; background: #f4f4ff; padding: 15px; margin-bottom: 15px; border-radius: 0 8px 8px 0;\"\u003e\n\u003cp style=\"font-weight: bold; margin: 0; color: #47479f;\"\u003eQ: Can I use this for external threads?\u003c\/p\u003e\n\u003cp style=\"margin: 10px 0 0;\"\u003eA: No. This is an **IR** (Internal Right) insert. For external work, you require the **ER** series.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left: 6px solid #47479F; background: #f4f4ff; padding: 15px; border-radius: 0 8px 8px 0;\"\u003e\n\u003cp style=\"font-weight: bold; margin: 0; color: #47479f;\"\u003eQ: Is AH725 good for High-Temp Alloys?\u003c\/p\u003e\n\u003cp style=\"margin: 0;\"\u003eA: Yes! AH725 is a high-toughness PVD grade designed for steel, stainless, and heat-resistant superalloys like Titanium and Inconel.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background-color: #47479f; color: white; padding: 25px; text-align: center; border-radius: 0 0 8px 8px;\"\u003e\n\u003ch4 style=\"margin: 0; font-size: 18px;\"\u003eExpert Machining Tip: Grade Selection\u003c\/h4\u003e\n\u003cp style=\"font-size: 14px; margin-top: 10px;\"\u003eFor \u003cstrong\u003einternal threading\u003c\/strong\u003e, PVD grades like **AH725** are superior to CVD because they maintain a sharper cutting edge. This sharpness reduces cutting forces and vibration in boring bars, leading to superior accuracy and significantly longer \u003cstrong\u003etool life\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size: 10px; color: #eee; text-align: center; margin-top: 5px;\"\u003e© Technical Content by cnchome-beyond.com - Scraping Protection Active\u003c\/p\u003e","brand":"BEYOND","offers":[{"title":"Default Title","offer_id":43143269449900,"sku":"16IR20ISO-B AH725","price":94.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/7328\/1708\/files\/Tungaloy_16IR_2.0ISO-B_AH725_Internal_Threading_Carbide_Insert_for_M14_M16_2.0mm_Pitch_ISO_Metric_Threads.jpg?v=1773388824","url":"https:\/\/cnchome-beyond.com\/products\/tungaloy-16ir-2-0iso-b-ah725-internal-threading-carbide-insert","provider":"CNCHome-Beyond","version":"1.0","type":"link"}