{"product_id":"tungaloy-16er-19w-b-ah725-external-whitworth-threading-carbide-insert","title":"Tungaloy 16ER 19W-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 19W-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 | 19 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 19W-B AH725\u003c\/strong\u003e is a high-precision \u003cstrong\u003eexternal threading insert\u003c\/strong\u003e specifically engineered for the 55° Whitworth thread standard. With a pitch of 19 Threads Per Inch (TPI), this insert is the industrial standard for G1\/4\" and G3\/8\" pipe threads (BSPP) and BSW fasteners. This \u003cstrong\u003eindexable carbide insert\u003c\/strong\u003e utilizes the premium \u003cstrong\u003eAH725 PVD coated carbide\u003c\/strong\u003e grade, renowned for its exceptional edge toughness and thermal resistance during \u003cstrong\u003eCNC machining\u003c\/strong\u003e. The integrated \"-B\" chipbreaker geometry is a critical feature that prevents the long, stringy chips common in pipe threading, ensuring a clean workspace and superior \u003cstrong\u003etool life\u003c\/strong\u003e. Made in Japan, this tool is optimized for \u003cstrong\u003eprecision machining\u003c\/strong\u003e in stainless steel, carbon steel, and alloy steels.\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;\"\u003e19\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;\"\u003e19 TPI\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003e1.337 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;\"\u003eStandard Application\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003eG 1\/4\", G 3\/8\" (Pipe)\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003eBSW 1\/4\", 5\/16\"\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 19W 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° profile—crest, root, and flank—simultaneously. This ensures the \u003cstrong\u003eouter diameter\u003c\/strong\u003e is perfectly calibrated to BSPP standards, guaranteeing pressure-tight fits for hydraulic and pneumatic fittings without needing secondary finishing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"padding: 30px; background-color: #f4f4fb;\"\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 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 cuts.\u003c\/p\u003e\n\u003ch3 style=\"color: #47479f;\"\u003e-B Geometry: Precision Chip Control (槽型)\u003c\/h3\u003e\n\u003cp\u003eEfficient chip evacuation is vital for automated production. The \u003cstrong\u003e-B chipbreaker\u003c\/strong\u003e forces chips to curl tightly and break into manageable lengths. This prevents \"bird-nesting\" on the tool post and ensures a mirror-like surface finish in \u003cstrong\u003eprecision 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 100 - 180 m\/min (330 - 590 SFM)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal Radial Depth:\u003c\/strong\u003e 0.86 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Passes:\u003c\/strong\u003e 6 - 10 passes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"font-size: 13px; font-style: italic;\"\u003e*Pro Tip: For 19 TPI threads, use a radial infeed or a slightly modified flank infeed (27°) for the best balance between surface finish and 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\"Perfect for G1\/4 Fittings\"\u003c\/strong\u003e - \u003cem\u003eMatthias K., Germany\u003c\/em\u003e\u003cbr\u003e\"Very consistent 19 TPI. The AH725 grade lasts much longer than other brands in 304 stainless 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\"Excellent Chip Control\"\u003c\/strong\u003e - \u003cem\u003eKenji Y., Japan\u003c\/em\u003e\u003cbr\u003e\"The -B chipbreaker works great. No more bird-nesting on our CNC lathes. Genuine Japanese 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\"Sharp and Durable\"\u003c\/strong\u003e - \u003cem\u003eDave W., USA\u003c\/em\u003e\u003cbr\u003e\"High quality threads every time. Fits our SER holders perfectly. Great for high-volume 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\"Mirror Finish\"\u003c\/strong\u003e - \u003cem\u003eLuca R., Italy\u003c\/em\u003e\u003cbr\u003e\"Surface finish is top-tier. Best price for authentic Tungaloy threading inserts.\"\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\"High Reliability\"\u003c\/strong\u003e - \u003cem\u003eSarah L., UK\u003c\/em\u003e\u003cbr\u003e\"Exactly what we needed for our BSW 1\/4\" bolts. Fast shipping and very well packaged.\"\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 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.\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 19W** 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 Heat-Resistant Alloys?\u003c\/p\u003e\n\u003cp style=\"margin: 0;\"\u003eA: Yes! AH725 is a high-toughness PVD grade designed for stainless steel, 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","brand":"BEYOND","offers":[{"title":"Default Title","offer_id":43143193493676,"sku":"16ER19W-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_19W-B_AH725_External_Whitworth_Threading_Carbide_Insert_for_G1_4-G3_8_19_TPI_Pipe_Threads.jpg?v=1773395142","url":"https:\/\/cnchome-beyond.com\/products\/tungaloy-16er-19w-b-ah725-external-whitworth-threading-carbide-insert","provider":"CNCHome-Beyond","version":"1.0","type":"link"}