{"product_id":"harken-45-mm-double-swivel-block","title":"Harken 45 mm Double Swivel Block","description":"\u003c!-- harken-official:v2 Sku:3393 page_sha256:867cc73297269e908d424f05dfcbcb884c66ec8da171632e199491222a99c026 --\u003e\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eBlack Magic Air blocks are a top favorite of Big Boat performance racers and cruisers. These lightweight, free-running, powerful performers are used for sail controls that see lots of action: mainsheet, runner, halyard, and spinnaker systems. A center cage keeps Torlon® roller bearings separated and parallel to reduce friction. Shackle blocks lock in two directions or swivel to keep line from twisting. Torlon is a registered trademark of Solvay Advanced Polymers L.L.C.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable style=\"border-collapse:collapse;width:100%;max-width:100%;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;border-bottom:1px solid #ddd;padding:8px;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"text-align:left;border-bottom:1px solid #ddd;padding:8px;\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003eBreaking load (kg)\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003e2200 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003eBreaking load (lb)\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003e4850 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003eLength (in)\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003e4 3\/16 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003eLength (mm)\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003e106 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003eMaximum line Ø (in)\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003e3\/8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003eMaximum line Ø (mm)\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003e10 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003eMaximum working load (kg)\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003e1100 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003eMaximum working load (lb)\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003e2425 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003eShackle pin Ø (in)\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003e1\/4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003eShackle pin Ø (mm)\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003e6 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003eSheave Ø (in)\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003e1 3\/4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003eSheave Ø (mm)\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003e45 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003eWeight (g)\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003e195 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003eWeight (oz)\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003e6.88 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c!-- sr-faq v=1 vendor=harken source_sha256=5c7538f1762f062b4b849447c677da62d44cfc9933d131ccd42b2f59189c88c3 --\u003e\u003ch3\u003eFAQs\u003c\/h3\u003e\u003cdetails\u003e\u003csummary\u003eHow are line size requirements referenced in the technical drawing?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eThe drawing notes 'LINE SIZE' alongside measurements, directly indicating maximum allowable line diameter.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat material or finish is used for this block?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eThe block is made with various materials and finishes as indicated in the documentation.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat is the part number for this double swivel block?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eThe part number for this block is 3393.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWho manufactures this block and where are they located?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eThe block is manufactured by Harken, Inc., located in Pewaukee, Wisconsin.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes this block undergo burr removal and edge finishing?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes, all burrs are removed and sharp edges are broken with a 0.010 max radius or chamfer.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat tolerances are specified unless noted otherwise for this block?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eTolerances are provided unless otherwise specified as decimal and angular, indicated in the drawing document.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow are dimensions presented in the product documentation?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eDimensions are presented in inches unless otherwise specified, as indicated in the Oval Key Product Characteristics.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat engineering drawing scale is used for this block?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eThe engineering drawing for this block is provided at a full size, using a 1:1 scale.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWho designed and approved the manufacturing for this block?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eThe block design and approvals are attributed to individuals with initials MDS, MJR, CJL, and MKE.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eAre assembly characteristics or notes specified for the double swivel block?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eAssembly notes reference 'ASSEMBLY45MM BLACK MAGIC DBL SWV BLOCK', implying assembly characteristics are documented.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"How are line size requirements referenced in the technical drawing?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The drawing notes 'LINE SIZE' alongside measurements, directly indicating maximum allowable line diameter.\"}}, {\"@type\": \"Question\", \"name\": \"What material or finish is used for this block?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The block is made with various materials and finishes as indicated in the documentation.\"}}, {\"@type\": \"Question\", \"name\": \"What is the part number for this double swivel block?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The part number for this block is 3393.\"}}, {\"@type\": \"Question\", \"name\": \"Who manufactures this block and where are they located?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The block is manufactured by Harken, Inc., located in Pewaukee, Wisconsin.\"}}, {\"@type\": \"Question\", \"name\": \"Does this block undergo burr removal and edge finishing?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, all burrs are removed and sharp edges are broken with a 0.010 max radius or chamfer.\"}}, {\"@type\": \"Question\", \"name\": \"What tolerances are specified unless noted otherwise for this block?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Tolerances are provided unless otherwise specified as decimal and angular, indicated in the drawing document.\"}}, {\"@type\": \"Question\", \"name\": \"How are dimensions presented in the product documentation?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Dimensions are presented in inches unless otherwise specified, as indicated in the Oval Key Product Characteristics.\"}}, {\"@type\": \"Question\", \"name\": \"What engineering drawing scale is used for this block?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The engineering drawing for this block is provided at a full size, using a 1:1 scale.\"}}, {\"@type\": \"Question\", \"name\": \"Who designed and approved the manufacturing for this block?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The block design and approvals are attributed to individuals with initials MDS, MJR, CJL, and MKE.\"}}, {\"@type\": \"Question\", \"name\": \"Are assembly characteristics or notes specified for the double swivel block?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Assembly notes reference 'ASSEMBLY\\n45MM BLACK MAGIC DBL SWV BLOCK', implying assembly characteristics are documented.\"}}]}\u003c\/script\u003e\u003c!-- \/sr-faq --\u003e\u003c!-- \/harken-official --\u003e","brand":"Harken","offers":[{"title":"Default Title","offer_id":53195990040913,"sku":"3393","price":692000.0,"currency_code":"KRW","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0955\/4434\/4913\/files\/3e970855-99b9-45d4-bfee-a42d66c9840f.jpg?v=1772623085","url":"https:\/\/www.sailrace.com\/ko-kr\/products\/harken-45-mm-double-swivel-block","provider":"SailRACE","version":"1.0","type":"link"}