{"product_id":"tungaloy-16er-16w-b-ah725-external-whitworth-threading-carbide-insert","title":"Tungaloy 16ER 16W-B AH725 External Whitworth 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 16ER 16W-B AH725\u003c\/span\u003e\u003c\/h1\u003e\n\u003cp style=\"margin: 10px 0 0; font-size: 18px; opacity: 0.9;\"\u003eExternal 55° Whitworth Specialist | 16 TPI | 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 16ER 16W-B AH725\u003c\/strong\u003e is a high-performance \u003cstrong\u003eexternal threading insert\u003c\/strong\u003e designed for the 55° Whitworth thread standard (BSW\/BSPP). Featuring a pitch of 16 Threads Per Inch (TPI), it is commonly used for 3\/8\" Whitworth fasteners and specific pipe fittings. This \u003cstrong\u003eindexable carbide insert\u003c\/strong\u003e features the world-renowned \u003cstrong\u003eAH725 PVD coated carbide\u003c\/strong\u003e, a grade engineered for extreme toughness and thermal stability during \u003cstrong\u003eCNC machining\u003c\/strong\u003e. The integrated \"-B\" chipbreaker geometry is a critical advancement for \u003cstrong\u003eexternal threading\u003c\/strong\u003e, ensuring that chips are tightly curled and snapped to prevent surface damage and \"bird-nesting.\" Made in Japan, this insert is the professional choice for \u003cstrong\u003eprecision machining\u003c\/strong\u003e in stainless steel, alloy steel, and carbon steel.\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;\"\u003eE\u003c\/b\u003e\u003cbr\u003e\u003csmall\u003eExternal\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;\"\u003e16\u003c\/b\u003e\u003cbr\u003e\u003csmall\u003ePitch (TPI)\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;\"\u003eW\u003c\/b\u003e\u003cbr\u003e\u003csmall\u003eWhitworth\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;\"\u003eImperial (Whitworth)\u003c\/th\u003e\n\u003cth style=\"padding: 12px; border: 1px solid #ddd; text-align: left;\"\u003eMetric Equivalent\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;\"\u003e16 TPI\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003e1.588 mm\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;\"\u003e3\/8 inch\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003e9.525 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #ddd; font-weight: bold;\"\u003eThread Angle\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003e55 Degrees\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003eN\/A (ISO is 60°)\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 16W is a \u003cstrong\u003eFull Profile\u003c\/strong\u003e insert. This is critical for \u003cstrong\u003eexternal threading\u003c\/strong\u003e as it forms the complete 55° Whitworth thread—simultaneously cutting the rounded crest and root. This ensures your 3\/8\" or G-series threads meet exact pressure-seal specifications without needing additional manual finishing passes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"padding: 30px;\"\u003e\n\u003ch3 style=\"color: #47479f;\"\u003eMaterial: AH725 PVD High-Performance 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 for extreme heat resistance. This \u003cstrong\u003elong-tail keywords\u003c\/strong\u003e industry favorite ensures stable \u003cstrong\u003etool life\u003c\/strong\u003e and exceptional surface quality in both continuous and interrupted external cuts.\u003c\/p\u003e\n\u003ch3 style=\"color: #47479f;\"\u003e-B Geometry: Precision Chipbreaker (槽型)\u003c\/h3\u003e\n\u003cp\u003eEffective chip control is vital for automated production. The \u003cstrong\u003e-B chipbreaker\u003c\/strong\u003e on the 16ER 16W-B is specifically designed to curl and snap chips away from the workpiece. This eliminates the risk of chips wrapping around the tool, ensuring the mirror-like \u003cstrong\u003eprecision machining\u003c\/strong\u003e results required for hydraulic and plumbing components.\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 90 - 170 m\/min (295 - 560 SFM)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal Radial Depth:\u003c\/strong\u003e 1.02 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Passes:\u003c\/strong\u003e 8 - 12 passes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"font-size: 13px; font-style: italic;\"\u003e*Pro Tip: For Whitworth threads, using a radial infeed or a slightly modified flank infeed (27°) helps maintain the integrity of the 55° profile and increases tool life.*\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\"Excellent for BSW threads\"\u003c\/strong\u003e - \u003cem\u003eGeorge B., UK\u003c\/em\u003e\u003cbr\u003e\"Very consistent 16 TPI results. The AH725 grade is incredibly tough and the finish on my stainless bolts is mirror-like.\"\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 Chip Management\"\u003c\/strong\u003e - \u003cem\u003eHiroshi S., Japan\u003c\/em\u003e\u003cbr\u003e\"The -B chipbreaker works perfectly. No more bird-nesting on the CNC lathe. 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\"Durable Tool Life\"\u003c\/strong\u003e - \u003cem\u003eRobert K., USA\u003c\/em\u003e\u003cbr\u003e\"Handles 1045 and 4140 steel easily. The tool life is predictable and reliable for batch production.\"\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\"High Precision\"\u003c\/strong\u003e - \u003cem\u003eLukas M., Germany\u003c\/em\u003e\u003cbr\u003e\"Authentic Japanese inserts. The 55-degree profile is perfect and the full profile saves us a lot of time in setup.\"\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\"Mirror Finish\"\u003c\/strong\u003e - \u003cem\u003eMarco D., Italy\u003c\/em\u003e\u003cbr\u003e\"Threads are incredibly clean. Fast shipping and the best price for genuine Tungaloy.\"\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 tool holder does this insert fit?\u003c\/p\u003e\n\u003cp style=\"margin: 10px 0 0;\"\u003eA: It fits any standard **SER** external threading holder with a size 16 (3\/8\" IC) pocket, such as the **SER2020K16**.\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 internal threads?\u003c\/p\u003e\n\u003cp style=\"margin: 10px 0 0;\"\u003eA: No. This is an **ER** (External Right) insert. For internal Whitworth threads, you need the **16IR** 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 Titanium 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 Advantage\u003c\/h4\u003e\n\u003cp style=\"font-size: 14px; margin-top: 10px;\"\u003eFor \u003cstrong\u003eexternal threading\u003c\/strong\u003e of 55° Whitworth profiles, PVD grades like **AH725** are superior to CVD because they maintain a sharper cutting edge. This sharpness is essential to properly form the rounded crests and roots without tearing the material, resulting in superior accuracy and 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\n\u003cp\u003e\u003cstrong\u003eInternal insert  Coated ：AH725  Designation: 16ER16W-B AH725\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e ø\u003c\/strong\u003e\u003ci\u003e\u003cstrong\u003ed:9.525,   t: 1.1  ,    \u003c\/strong\u003e\u003c\/i\u003eR\u003cstrong\u003e3  : 0.9 ,    \u003c\/strong\u003e\u003ci\u003e\u003cstrong\u003er\u003c\/strong\u003e\u003c\/i\u003e\u003cstrong\u003eε : 0.2 。\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGarde：AH725 P15 - P30 M15 - M30 K25 - K30 S15 - S25 Coating：Main composition (Ti, Al)N Thickness 2\/ μm \u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eFeature： Good balance between wear and chipping resistance\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e- Suitable for machining steel and stainless steel under general cutting \u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003econditions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0592\/7328\/1708\/files\/20240318095721.png?v=1710726982\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0592\/7328\/1708\/files\/threading_insert_tungaly.png?v=1710726392\"\u003e\u003c\/p\u003e","brand":"BEYOND","offers":[{"title":"Default Title","offer_id":43142379110572,"sku":"16ER16W-B AH725","price":94.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/7328\/1708\/files\/Tungaloy_16ER_16W-B_AH725_External_Whitworth_Threading_Carbide_Insert_for_16_TPI_Pipe_and_BSW_Threads.jpg?v=1773395008","url":"https:\/\/cnchome-beyond.com\/products\/tungaloy-16er-16w-b-ah725-external-whitworth-threading-carbide-insert","provider":"CNCHome-Beyond","version":"1.0","type":"link"}