{"title":"SR Indexable Thread Mill Inserts - NPSF","description":"","products":[{"product_id":"12-18npsf","title":"Carmex Carbide Threading Insert - NPSF - TiAlN Coated - 12-18NPSF","description":"\u003cdiv\u003e\n\u003cp\u003eThe Carmex Carbide Threading Insert in NPSF form is a versatile, TiAlN-coated solution built for professional machinists who need reliable, multi-profile threading on lathes and CNC machines. Designed to cover the most common thread forms, including NPSF, it delivers consistent results across a wide range of applications.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eThread profiles covered\u003c\/b\u003e: A versatile collection that spans the majority of standard thread forms you’ll encounter in daily machining.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFive length options\u003c\/b\u003e: 12 mm, 16 mm, 20 mm, 30 mm, and 40 mm lengths to fit different tooling setups and depth-of-cut needs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTiAlN coating\u003c\/b\u003e: Hard, high-temperature resistant coating that enhances wear resistance and helps maintain edge sharpness over longer runs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDouble-edged design\u003c\/b\u003e: Two cutting edges per insert (except for BSPT\/NPT\/NPTF\/American Buttress\/API RD profiles) for extended usable life from each piece.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eInternal\/external threading versatility\u003c\/b\u003e: In many profiles, the same insert can machine both internal and external threads, reducing tool changes and inventory (note: some forms such as ISO\/UN\/NPSM\/UNJ\/Acme may differ).\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWide pitch range\u003c\/b\u003e: Supports pitches from 0.5 mm (32 TPI) to 6.0 mm (4 TPI), enabling both fine and coarse thread production.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith its TiAlN-coated carbide core and a flexible five-length lineup, this insert delivers precise, reliable threads with reduced downtime and fewer inserts to stock. The dual-edge geometry provides more usable life per piece, and the broad pitch range supports a wide array of standard thread forms—including NPSF threads—making it a practical choice for general machining, pipe fittings, and precision fasteners. This is a dependable, long-term tooling solution for workshops that value consistent performance and efficient production cycles.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Carmex","offers":[{"title":"Default Title","offer_id":40316034482254,"sku":"12-18NPSF","price":26.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/sr-insert_cf434b93-f9e2-4780-ba2e-dbbc5f078a53.jpg?v=1697552980"},{"product_id":"14-14npsf","title":"Carmex Carbide Threading Insert - NPSF - TiAlN Coated - 14-14NPSF","description":"\u003cdiv\u003e\n\u003cp\u003e\nCarmex Carbide Threading Insert - NPSF - TiAlN Coated - 14-14NPSF is a versatile collection of carbide inserts designed to cover the most common thread profiles in a single, durable tool. Built for machine shops and precision manufacturers, it delivers reliable performance across a range of threading tasks with a focus on efficiency and consistency.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eTiAlN coating\u003c\/b\u003e: TiAlN-coated carbide inserts resist wear and heat, extending tool life and maintaining sharpness at higher speeds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFive length options\u003c\/b\u003e: A set available in five lengths, from 12 mm to 40 mm, to suit different thread pitches and approach depths.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDouble‑sided cutting edges\u003c\/b\u003e: Each insert provides two cutting edges for more usable life and cost efficiency (note: BSPT\/NPT\/NPTF\/American Buttress\/API RD may differ).\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eInternal and external threading compatibility\u003c\/b\u003e: In many profiles, the same insert can machine both internal and external threads, reducing changeovers (exception: ISO\/UN\/NPSM\/UNJ\/Acme).\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWide pitch range\u003c\/b\u003e: Supports pitches from 0.5 mm (32 TPI) up to 6.0 mm (4 TPI), covering the majority of standard thread forms.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nThis Carmex insert family is ideal for workshops that need flexible, reliable threading capabilities without maintaining a large library of different inserts. The combination of TiAlN coating, dual cutting edges, and broad pitch compatibility helps you achieve consistent thread quality on a variety of materials—stainless steel, alloy, and machining-grade steels included—while keeping tooling costs in check.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Carmex","offers":[{"title":"Default Title","offer_id":40316034515022,"sku":"14-14NPSF","price":26.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/sr-insert_36ffa54c-cfc3-4850-acf7-1407d28f6b14.jpg?v=1697552984"},{"product_id":"14-18npsf","title":"Carmex Carbide Threading Insert - NPSF - TiAlN Coated - 14-18NPSF","description":"\u003cdiv\u003e\n\u003cp\u003e\nMeet the Carmex Carbide Threading Insert—NPSF, TiAlN coated, engineered for machinists who tackle a wide range of thread profiles with a single, reliable cutting insert. It’s optimized for NPSF applications in the 14–18 NPSF range, delivering consistent performance on both internal and external threading tasks.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eTiAlN coating\u003c\/b\u003e: Wear-resistant TiAlN coating enhances heat tolerance and extends insert life during high-speed threading.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFive lengths (12–40 mm)\u003c\/b\u003e: Five length options to match your toolholder and thread pitch; pitches supported range from 0.5 mm \/ 32 TPI to 6.0 mm \/ 4 TPI, depending on length.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDouble-sided cutting edges\u003c\/b\u003e: Each insert provides two cutting edges for extended use and easier indexing (except for BSPT \/ NPT \/ NPTF \/ American Buttress \/ API RD).\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eInternal \u0026amp; external threading capability\u003c\/b\u003e: In many profiles, the same insert can machine both internal and external threads, reducing tool inventory (exceptions apply: ISO \/ UN \/ NPSM \/ UNJ \/ Acme).\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eNPSF compatibility\u003c\/b\u003e: Specifically designed to handle NPSF thread forms within the 14–18NPSF range for reliable, repeatable results.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nThis threading insert is built to streamline production runs and maintenance work alike. The TiAlN coating helps sustain cutting performance under heat, while the dual-edge design minimizes downtime through quick indexing. Five length options and broad compatibility with common thread forms give you a flexible, efficient solution for a variety of machining tasks without juggling multiple inserts.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Carmex","offers":[{"title":"Default Title","offer_id":40316035301454,"sku":"14-18NPSF","price":26.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/sr-insert_f2dc2fc4-834c-4fa4-95c0-2bc893504ef0.jpg?v=1697552987"},{"product_id":"21-11-5npsf","title":"Carmex Carbide Threading Insert - NPSF - TiAlN Coated - 21-11.5NPSF","description":"\u003cdiv\u003e\n\u003cp\u003eThe Carmex Carbide Threading Insert (NPSF, TiAlN coated) is a versatile carbide insert designed to tackle a wide range of common thread profiles with reliability. Built for machinists and job shops, it pairs robust performance with one adaptable tool platform.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eThread profiles covered\u003c\/b\u003e: A versatile collection that spans all common thread profiles in a single system, reducing the need for multiple inserts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFive length options\u003c\/b\u003e: Available in five lengths from 12 mm to 40 mm, supporting pitches from 0.5 mm (32 TPI) to 6.0 mm (4 TPI).\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDouble-sided cutting edges\u003c\/b\u003e: Each insert has two cutting edges for extended life (except BSPT \/ NPT \/ NPTF \/ American Buttress \/ API RD).\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eInternal \u0026amp; external threading capability\u003c\/b\u003e: For many profiles, the same insert can machine both internal and external threads, minimizing tool changes (except ISO \/ UN \/ NPSM \/ UNJ \/ Acme).\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTiAlN coating on carbide\u003c\/b\u003e: TiAlN provides enhanced wear and heat resistance to help maintain thread quality at higher speeds.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThis insert family is designed to boost productivity by combining broad profile coverage, multiple edge life, and versatility across internal and external threading tasks. The TiAlN-coated carbide construction delivers consistent thread accuracy and surface finish, helping you complete more work with fewer tool changes and less downtime.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Carmex","offers":[{"title":"Default Title","offer_id":40316035661902,"sku":"21-11.5NPSF","price":35.22,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/sr-insert_d3533319-3621-4510-abc8-f04c6bf2b072.jpg?v=1697552991"},{"product_id":"21-14npsf","title":"Carmex Carbide Threading Insert - NPSF - TiAlN Coated - 21-14NPSF","description":"\u003cdiv\u003e\n\u003cp\u003eThe Carmex Carbide Threading Insert in NPSF, TiAlN coated, 21-14NPSF is a versatile threading solution built for machinists and production shops that need reliable performance across a broad range of thread profiles.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eFive length options\u003c\/b\u003e: available in 12 mm to 40 mm lengths to match your cutting geometry and pitch requirements\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTiAlN-coated carbide\u003c\/b\u003e: hard-wearing coating enhances wear resistance and heat tolerance for consistent threading at higher speeds\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDouble-sided cutting edges\u003c\/b\u003e: two cutting edges per insert (except BSPT \/ NPT \/ NPTF \/ American Buttress \/ API RD) for extended life\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eInternal \u0026amp; external threading capability\u003c\/b\u003e: the same insert can machine both internal and external threads for many profiles (except ISO\/UN\/NPSM\/UNJ\/Acme)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eBroad thread-profile coverage\u003c\/b\u003e: designed to handle all common thread forms with a single, adaptable insert family\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhether you’re producing precision fasteners, fittings, or components with varied thread forms, this insert delivers reliable thread quality and long tool life. The TiAlN coating helps maintain a sharp edge under demanding conditions, while the double-edged design lowers downtime by reducing tool changes. With multiple length options and compatibility across many profiles, you can streamline setup, simplify inventory, and improve throughput on both turning and threading operations.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Carmex","offers":[{"title":"Default Title","offer_id":40316035727438,"sku":"21-14NPSF","price":35.22,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/sr-insert_c6e21fe6-b6a8-42f8-9cf6-8555dcc1aef2.jpg?v=1697552994"},{"product_id":"30-11-5npsf","title":"Carmex Carbide Threading Insert - NPSF - TiAlN Coated - 30-11.5NPSF","description":"\u003cdiv\u003e\n\u003cp\u003e\nCarmex Carbide Threading Insert – NPSF – TiAlN Coated – 30-11.5NPSF is a versatile threading solution designed for shops that require reliable, mult profile threading with fewer tool changes. Built for precision on CNC lathes and milling machines, it delivers consistent results across a wide range of common thread profiles.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eCoating\u003c\/b\u003e: TiAlN-coated carbide for enhanced wear resistance and higher temperature performance during threading.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eEdge configuration\u003c\/b\u003e: Double-sided design with two cutting edges to extend tool life (note: some line variants like BSPT\/NPT\/NPTF\/American Buttress\/API RD may be single-edged).\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eInternal\/External capability\u003c\/b\u003e: For many thread profiles, a single insert can machine both internal and external threads, reducing setup changes (exceptions apply for ISO\/UN\/NPSM\/UNJ\/Acme).\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThread profiles coverage\u003c\/b\u003e: Part of a broad family that supports all common thread profiles, simplifying inventory and tooling decisions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eLength options\u003c\/b\u003e: Five lengths available from 12 mm to 40 mm to fit different tools and setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePitch range\u003c\/b\u003e: Capable of handling pitches from 0.5 mm (32 TPI) to 6.0 mm (4 TPI), depending on the selected length.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMaterial\u003c\/b\u003e: Durable carbide substrate designed for repeatable, high-precision threading.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nThis insert family translates into practical benefits: fewer tool changes thanks to multiple cutting edges, dependable performance across internal and external threading tasks, and longer tool life through a TiAlN coating that maintains sharpness at higher speeds. The five length options let you tailor depth of cut and feed rates to your specific application, whether you’re producing hydraulic fittings, fasteners, or pipe components.\n\u003c\/p\u003e \u003c\/div\u003e","brand":"Carmex","offers":[{"title":"Default Title","offer_id":40316035760206,"sku":"30-11.5NPSF","price":48.3,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/sr-insert_28e6be39-e8d0-4e70-88eb-70ff7f72e232.jpg?v=1697552998"},{"product_id":"30-8npsf","title":"Carmex Carbide Threading Insert - NPSF - TiAlN Coated - 30-8NPSF","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Carmex Carbide Threading Insert – NPSF, TiAlN coated – 30-8NPSF is a versatile family designed to cover the most common thread profiles in a single, reliable tool. Built for professional workshops and production environments, this TiAlN-coated carbide insert focuses on durability, precision, and efficiency.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eComprehensive thread coverage\u003c\/b\u003e: A versatile collection that spans the most common thread profiles, reducing the need to stock multiple inserts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFive length options (12–40 mm)\u003c\/b\u003e: Choose from fiveLengths to suit different hole sizes and pitches, enabling cuts for pitches from 0.5 mm \/ 32 TPI up to 6.0 mm \/ 4 TPI.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTiAlN coating\u003c\/b\u003e: TiAlN coating enhances wear resistance and supports higher-speed cutting for longer tool life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDouble‑sided cutting edges\u003c\/b\u003e: Each insert provides two cutting edges (except for BSPT \/ NPT \/ NPTF \/ American Buttress \/ API RD), maximizing usable life per insert.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eInternal\/external threading capability\u003c\/b\u003e: For many thread profiles, the same insert can machine both internal and external threads (note: certain profiles are excluded, such as ISO \/ UN \/ NPSM \/ UNJ \/ Acme).\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nThis insert set is designed to streamline threading operations, delivering consistent thread forms across materials while reducing the need for frequent tool changes. With its robust carbide construction and TiAlN coating, it’s well-suited to demanding shops that prioritize reliability, finish quality, and productivity.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Carmex","offers":[{"title":"Default Title","offer_id":40316035792974,"sku":"30-8NPSF","price":48.3,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/sr-insert_07f76c65-30b5-421d-bedb-288ed8052c8b.jpg?v=1697553001"},{"product_id":"40-11-5npsf","title":"Carmex Carbide Threading Insert - NPSF - TiAlN Coated - 40-11.5NPSF","description":"\u003cdiv\u003e\n\u003cp\u003e\nCarmex Carbide Threading Insert - NPSF, TiAlN coated is a versatile, high-precision threading solution designed for machinists and job shops that need reliable performance across a wide range of profiles.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eCoating\u003c\/b\u003e: TiAlN-coated carbide for improved wear resistance and longer edge life in demanding threading tasks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMaterial\u003c\/b\u003e: Solid carbide substrate provides rigidity and consistent cutting action for precise threads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCutting Edges\u003c\/b\u003e: Double-sided design with two cutting edges to maximize use before reindexing (except for BSPT\/NPT\/NPTF\/American Buttress\/API RD profiles).\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eProfile Coverage\u003c\/b\u003e: Covers all common thread profiles, enabling efficient tooling across multiple projects with a single insert family.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eLength Options\u003c\/b\u003e: Five lengths ranging from 12 mm to 40 mm to match tool holders and workpiece geometry.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePitch Range\u003c\/b\u003e: Depending on length, handles pitches from 0.5 mm (32 TPI) up to 6.0 mm (4 TPI) for versatile threading capability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eInternal\/External Capability\u003c\/b\u003e: For many thread profiles, the same insert can machine both internal and external threads, reducing tool changes (note: some profiles like ISO\/UN\/NPSM\/UNJ\/Acme have dedicated considerations).\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDesignation\u003c\/b\u003e: NPSF threading insert optimized for National Pipe Straight Fin applications within the Carmex line.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nThis insert is an excellent choice for workshops and production environments that want to streamline threading operations without swapping tools for every profile. The TiAlN coating helps maintain sharpness on hard materials, while the dual-edge design and multiple length options offer flexibility to achieve clean, accurate threads with fewer interruptions. Ideal for piping, fastener, and hydraulic components where consistent thread quality and tool longevity matter.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Carmex","offers":[{"title":"Default Title","offer_id":40316035989582,"sku":"40-11.5NPSF","price":83.54,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/sr-insert_0a214881-e958-4f3f-9ecb-f2eef60bbef7.jpg?v=1697553005"},{"product_id":"40-8npsf","title":"Carmex Carbide Threading Insert - NPSF - TiAlN Coated - 40-8NPSF","description":"\u003cdiv\u003e\n\u003cp\u003e\nMeet the Carmex Carbide Threading Insert in NPSF format, TiAlN coated and precision-engineered for professionals who demand reliable performance across common thread profiles. Model 40-8NPSF fits a busy workshop where versatility and durability matter.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eFive length options\u003c\/b\u003e: available in five lengths (from 12 mm to 40 mm) to match a wide range of thread profiles and turning depths, with pitches from 0.5 mm \/ 32 TPI up to 6.0 mm \/ 4 TPI depending on length.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTiAlN coating\u003c\/b\u003e: carbide insert finished with TiAlN for enhanced hardness, wear resistance, and temperature tolerance, helping extend tool life in tougher materials and higher-speed applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDouble-edged design\u003c\/b\u003e: each insert provides two cutting edges for extended usable life; flip or rotate to extend service before replacing (note: BSPT \/ NPT \/ NPTF \/ American Buttress \/ API RD are exceptions).\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eInternal and external threading capable\u003c\/b\u003e: for many thread profiles, the same insert can machine both internal and external threads, reducing tool changes and simplifying setup (exceptions apply for ISO \/ UN \/ NPSM \/ UNJ \/ Acme).\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eVersatile, single-set coverage\u003c\/b\u003e: designed to cover a broad range of common thread profiles with a single family of inserts, helping you minimize inventory while maximizing productivity.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nThis insert is ideal for machinists and shops that regularly produce diverse threaded components. The combination of TiAlN coating, dual cutting edges, and multi-length availability delivers dependable performance across standard metric and imperial thread forms, while reducing downtime and tool changes. Use it for general-purpose threading tasks on a variety of materials, from metric to inch-based threads, and rely on its robust carbide construction to maintain precision through repeated operations.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Carmex","offers":[{"title":"Default Title","offer_id":40316036874318,"sku":"40-8NPSF","price":83.54,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/sr-insert_947632f7-7ae4-4688-984c-967fc0d23d4d.jpg?v=1697553009"}],"url":"https:\/\/www.protool-ltd.co.uk\/collections\/sr-indexable-thread-mill-inserts-npsf.oembed","provider":"Protool Precision Tools","version":"1.0","type":"link"}