{"product_id":"ronstan-series-50-all-purpose-single-stand-up-block-rf51140","title":"Ronstan Series 50 All Purpose Single Stand-Up Block RF51140","description":"\u003cp\u003e\u003cstrong\u003eSeries 50 All Purpose Block - Single Stand Up\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eExceptionally high working loads\u003c\/li\u003e\n\u003cli\u003eLow maintenance, long service life\u003c\/li\u003e\n\u003cli\u003eSelf-lubricating Acetal polymer sheave ensures low friction and extreme durability\u003c\/li\u003e\n\u003cli\u003eCaptive Lock universal head\u003c\/li\u003e\n\u003cli\u003eSlotted pin shackle eliminates fouled lines\u003c\/li\u003e\n\u003cli\u003eMount with 2 x 5mm (3\/6\") fasteners (not supplied)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAll purpose (AP) blocks are a great all around solution. Self-lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads. For durability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing.Captive Lock universal head can be fixed in either of two planes, or free to swivel as required. Quick adjusting cleat arms require no tools to adjust and fix securely in position. Becket pin is removable so line can be spliced prior to fitting.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMainsheet and halyard applications, vang and spinnaker control lines on boats to 10m (33ft)\u003c\/li\u003e\n\u003cli\u003eS60 - on boats up to 12m (40ft)\u003c\/li\u003e\n\u003cli\u003eTypically used in direct 4:1 purchase systems such as mainsheets and boom vangs\u003c\/li\u003e\n\u003cli\u003eOn larger boats they are used for fine-tune mainsheet tackles, outhauls, cunninghams, checkstays, genoa lead pullers and traveller controls.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eGrade 316 stainless steel load strap\u003c\/li\u003e\n\u003cli\u003eImpact and UV resistant, fiber reinforced Nylon cheeks\u003c\/li\u003e\n\u003c\/ul\u003e \u003c!--- cis2:m2lsl5xp ---\u003e\n\u003cp\u003e\u003cstrong\u003eRonstan Series 50 All Purpose Single Stand-Up Block RF51140\u003c\/strong\u003e is a versatile sailing hardware solution for cruising and racing applications. Designed for mainsheets, halyards, vangs, spinnaker control lines, and other deck hardware systems, this single stand-up block combines high working loads, low friction, and durable construction for dependable line handling on boats up to 33 feet.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe self-lubricating Acetal polymer sheave runs on polished stainless steel races to support smooth operation under both dynamic and high static loads. Its construction is suited to demanding sheet, halyard, and control-line applications, while the impact- and UV-resistant fiber-reinforced Nylon cheeks help support a long service life with minimal maintenance. The removable becket pin also allows line splicing before installation.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeature:\u003c\/strong\u003e Self-lubricating Acetal polymer sheave delivers low friction and high durability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeature:\u003c\/strong\u003e Polished stainless steel races support smooth performance with dynamic and static loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeature:\u003c\/strong\u003e Captive Lock universal head can be fixed in either of two planes or allowed to swivel as needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeature:\u003c\/strong\u003e Slotted pin shackle helps reduce the chance of fouled lines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeature:\u003c\/strong\u003e Quick-adjusting cleat arms require no tools and secure firmly in position.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeature:\u003c\/strong\u003e Removable becket pin allows line splicing before fitting.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eProduct Details:\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Ronstan\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 50 All Purpose\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e RF51140\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlock Type:\u003c\/strong\u003e Single stand-up block\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoad Strap:\u003c\/strong\u003e Grade 316 stainless steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheeks:\u003c\/strong\u003e Impact- and UV-resistant fiber-reinforced Nylon\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplications:\u003c\/strong\u003e Mainsheets, halyards, boom vangs, spinnaker control lines, outhauls, cunninghams, checkstays, genoa lead pullers, and traveler controls\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended Boat Size:\u003c\/strong\u003e Boats up to 33 feet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Requires fasteners, which are not supplied\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cp\u003eChoose the Ronstan Series 50 All Purpose Single Stand-Up Block RF51140 for a durable, adaptable addition to your sailing control-line system.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eSEO META DESCRIPTION:\u003c\/strong\u003e\u003cbr\u003eShop the Ronstan Series 50 All Purpose Single Stand-Up Block RF51140 for durable sheet, halyard, and control-line handling on boats up to 33 feet.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eSelf-lubricating Acetal polymer sheave delivers low friction and high durability.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003ePolished stainless steel races support smooth performance with dynamic and static loads.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCaptive Lock universal head can be fixed in either of two planes or allowed to swivel as needed.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eSlotted pin shackle helps reduce the chance of fouled lines.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eQuick-adjusting cleat arms require no tools and secure firmly in position.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eRemovable becket pin allows line splicing before fitting.\u003c\/li\u003e\u003c\/ul\u003e\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eTruck Freight: No\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eOversized: No\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":44881669455961,"sku":"70680","price":63.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0623\/1818\/2489\/files\/70680XL.jpg?v=1789193593","url":"https:\/\/www.marinepartsonly.com\/products\/ronstan-series-50-all-purpose-single-stand-up-block-rf51140","provider":"Marine Parts Only","version":"1.0","type":"link"}