{"product_id":"c-hook-spanner-wrench-carbon-steel-er40-collet-chuck-nut","title":"C Hook Spanner Wrench – Carbon Steel ER40 Collet Chuck Tool","description":"\n\u003ch2\u003eHomyl C Hook Spanner Wrench for ER40 Collet Chuck Nuts\u003c\/h2\u003e\n\u003cp\u003eGet a firm, precise grip on your ER40 clamping nuts with this heavy-duty \u003cstrong\u003eC Hook Spanner Wrench\u003c\/strong\u003e by Homyl. Forged from high-grade carbon steel and fitted with an ergonomic anti-slip handle, this 230mm tool is engineered for CNC machinists, lathe operators, and workshop professionals who demand accuracy and durability from every tool in their kit.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eER40 Compatible:\u003c\/strong\u003e Designed specifically for ER40 collet chuck nuts with a 58mm (2.28 inch) opening width — a precise fit that protects your nuts, shafts, and housings from damage.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePremium Carbon Steel Construction:\u003c\/strong\u003e Forged carbon steel delivers exceptional toughness, high hardness, and outstanding wear resistance for long-lasting workshop use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eErgonomic Anti-Slip Handle:\u003c\/strong\u003e The red rubber grip provides a comfortable, secure hold and ensures optimal torque transmission even in demanding conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMultifunctional Use:\u003c\/strong\u003e Drives key screws, threaded rings, and shafts — compatible with ER swivel clamping nuts, CNC milling machine chuck nuts, spring clamping nuts, and most standard tool holders.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAccurate Fit:\u003c\/strong\u003e Reduces the risk of slippage or damage to surrounding components for clean, confident tightening and loosening every time.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCarbon Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOverall Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e230mm (~9.1 inches)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOpening Width\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e58mm (2.28 inches)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible With\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eER40 Collet Chuck Nuts, CNC Milling Chuck Nuts, Spring Clamping Nut Tool Holders\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHandle\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRed Non-Slip Rubber Grip\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in China\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × C Hook Spanner Wrench (ER40)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eNote: Please allow a measurement tolerance of 1–2mm due to manual measurement methods.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eRelated Tools \u0026amp; Workshop Accessories\u003c\/h3\u003e\n\u003cp\u003eLooking for more precision workshop tools? Check out our \u003ca href=\"\/products\/leather-hole-punch-tool-diy-stitching-punch-4-5-6mm\"\u003eLeather Hole Punch Tool | DIY Stitching Punch 4\/5\/6mm\u003c\/a\u003e and our \u003ca href=\"\/products\/stainless-steel-ceramic-trimming-tool-curved-skip-knife\"\u003eStainless Steel Ceramic Trimming Tool – Curved Skip Knife\u003c\/a\u003e for more quality hand tools. For craft and workshop storage, explore the \u003ca href=\"\/products\/airtight-transparent-pet-storage-bottle-craft-beads-home-organization\"\u003eAirtight Transparent PET Storage Bottle | Beads \u0026amp; Crafts\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/personal-protective-equipment\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on personal protective equipment\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Which collet chuck sizes is this C hook spanner compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: This C hook spanner wrench is specifically designed for \u003cstrong\u003eER40 collet chuck nuts\u003c\/strong\u003e with a 58mm (2.28 inch) opening width. It is also compatible with ER swivel clamping nuts, CNC milling machine chuck nuts, spring clamping nuts, and most standard tool holders that match this opening size.\u003c\/p\u003e\n\u003ch4\u003eQ: What material is the C hook spanner made from?\u003c\/h4\u003e\n\u003cp\u003eA: The wrench is forged from high-quality \u003cstrong\u003ecarbon steel\u003c\/strong\u003e, offering excellent toughness, high hardness, and superior wear resistance — making it well-suited for regular professional workshop use.\u003c\/p\u003e\n\u003ch4\u003eQ: Is the handle comfortable for extended use?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The wrench features an \u003cstrong\u003eergonomic red rubber non-slip handle\u003c\/strong\u003e that provides a comfortable, secure grip and ensures optimal torque transmission, even during extended or heavy-duty tightening tasks.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the overall length of this spanner wrench?\u003c\/h4\u003e\n\u003cp\u003eA: The C hook spanner measures \u003cstrong\u003e230mm (approximately 9.1 inches)\u003c\/strong\u003e in overall length, providing good leverage for tightening and loosening ER40 chuck nuts efficiently.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Which collet chuck sizes is this C hook spanner compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This C hook spanner wrench is specifically designed for ER40 collet chuck nuts with a 58mm (2.28 inch) opening width. It is also compatible with ER swivel clamping nuts, CNC milling machine chuck nuts, spring clamping nuts, and most standard tool holders that match this opening size.\"}}, {\"@type\": \"Question\", \"name\": \"What material is the C hook spanner made from?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The wrench is forged from high-quality carbon steel, offering excellent toughness, high hardness, and superior wear resistance — making it well-suited for regular professional workshop use.\"}}, {\"@type\": \"Question\", \"name\": \"Is the handle comfortable for extended use?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. The wrench features an ergonomic red rubber non-slip handle that provides a comfortable, secure grip and ensures optimal torque transmission, even during extended or heavy-duty tightening tasks.\"}}, {\"@type\": \"Question\", \"name\": \"What is the overall length of this spanner wrench?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The C hook spanner measures 230mm (approximately 9.1 inches) in overall length, providing good leverage for tightening and loosening ER40 chuck nuts efficiently.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/gf1krb-by.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/gf1krb-by.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"C Hook Spanner Wrench – Carbon Steel ER40 Collet Chuck Tool\", \"item\": \"https:\/\/gf1krb-by.myshopify.com\/products\/c-hook-spanner-wrench-carbon-steel-er40-collet-chuck-nut\"}]}\u003c\/script\u003e","brand":"NIFTY","offers":[{"title":"Default Title","offer_id":67876320739552,"sku":"\u003cnone\u003e","price":61.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0831\/5384\/6496\/files\/S3c9ccc63ad174b28a78b8253180803a2C.webp?v=1791763382","url":"https:\/\/niftyshopmart.com\/products\/c-hook-spanner-wrench-carbon-steel-er40-collet-chuck-nut","provider":"NIFTY","version":"1.0","type":"link"}