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Blocks Parts & Bases

Big Boat Car Controls and Parts
Harken Big Boat Car Controls And Parts 25 Replacement Torlon Balls, Fits Cars . For use on offshore boats from 32 65 . Torlon bearings and pivoting shackles for non-vertical loads. See control line options below.
Brand: Harken
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5 & 7 Series Snap Shackle Adapters
Schaefer 5 & 7 Series Snap Shackle Adapters Adapter, 2 21/32"l X 9/32"w, 2.5oz. . Universal adapter for custom mounting all Series 5 and 7 blocks. Quick release Stainless steel
Brand: Schaefer
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Stainless Steel Shackles
Harken Stainless Steel Shackles Twist Shackle, 6mm, 1/4" Pin Dia., 1650lb. Max. Working Load, 3300lb. Breaking . Optimize the performance of your Harken blocks with these strong, forged stainless-steel shackles.
Brand: Harken
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Large Snap Shackle
  • Large Snap Shackle
  • Sailboat Hardware > Blocks > Sheaves > Parts & Bases
  • $79.99 - 92.58 USD
Harken Large Snap Shackle . For blocks with 1/4" shackle pin. 3-3/8"L (excluding spring) 1,500lb. max. working load
Brand: Harken
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Snap Shackle
  • Snap Shackle
  • Sailboat Hardware > Blocks > Sheaves > Parts & Bases
  • $77.99 - 90.68 USD
Harken Snap Shackle . Attaches directly to the shackle post on 2-1/4", 3" and fiddle blocks. Includes a stand-up spring. Snap dimensions: 3/4" x 1" Bail dimensions: 7/16"
Brand: Harken
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Block Accessories
  • Block Accessories
  • Sailboat Hardware > Blocks > Sheaves > Parts & Bases
  • $0.60 - 89.67 USD
Harken Block Accessories 1" Stand Up Spring, Fits Bullet Blocks . Ball-and-socket bases allow blocks to articulate so they lead fairly from any direction to any direction. Stanchion base mounts to any 7/8" or 1"dia. stanchion Small and Medium use #10 FHMS; Midrange uses 1/4" FHMS
Brand: Harken
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Snap Shackle Adapter with Trunnion
Ronstan Snap Shackle Adapter With Trunnion . Snap shackle adapter with Trunnion converts your Ronstan blocks for new uses. Trunnion snap shackles can move in two planes (pivot and swivel) to maintain optimum articulation. Fits blocks with shackle pins up to 5mm (3/16") Investment cast stainless...
Brand: Ronstan
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Mid Range Cars, Parts and Accessories
Harken Mid Range Cars, Parts And Accessories Replqacement Torlon Balls (25) . Midrange traveler end controls allow installation of traveler purchase from 2:1 to 4:1, fastening directly to the track without extra holes in the deck. End control sheaves are free-running 40mm Carbo Blocks, so your...
Brand: Harken
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Synchro Block Snap Shackles
Lewmar Synchro Block Snap Shackles Shackle, Fits Size 72mm, 22mm Opening Eye Id, Replaces 6mm Pin Dia., 2,420lb. Swl . Adjustable snap shackles fit all Synchro blocks in the 60mm, 72mm, and 90mm ranges. Replaces the standard shackle fitted to all blocks Will also fit all Lewmar Ocean blocks and...
Brand: Lewmar
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Schaefer Replacement Sheaves
Schaefer Replacement Sheaves Delrin Sheave, 5/16" Max. Line Dia., 1/16" Od, Id, 7/16" Width . Schaefer sheaves are designed to be compatible with Schaefer products, and are not intended for use in other manufacturer's blocks. For masthead use only. Delrin sheaves are injection molded with UV...
Brand: Schaefer
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Hi Load Ball/Socket Stand up Base for 3/16" Pin
Harken Hi Load Ball/socket Stand Up Base For 3/16" Pin . Hi-Load Ball/Socket Stand-up Base Height (in): 1-3/4 Weight (oz): 4 Base dia. (in): 2-1/8 Inside socket dia. (in): 3/8 SWL (lb): 800 Breaking strength (lb): 2500
Brand: Harken
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Large Ball and Socket Stand Up Base
Harken Large Ball And Socket Stand Up Base . Large ball/socket* to use with Fiddle/3.00" cruiser/ratchets. 2" High 4oz. 2-1/8" Base diameter 7/16" Inside socket diameter 1/4" Pin size 400lb. Maximum working load 1300lb. Breaking load *#10 (5 mm) FH fasteners
Brand: Harken
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Stand Up Base
  • Stand Up Base
  • Sailboat Hardware > Blocks > Sheaves > Parts & Bases
  • $31.52 - 34.81 USD
Ronstan Stand Up Base . Stand-up base fits the head post of Series 50 blocks for added versatility. Diamond shape base measures 2" x 3" Pin diameter: 3/16" MWL: 1100lb. Use 3/16" fasteners
Brand: Ronstan
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Series 40 Orbit Block Accessories
Ronstan Series 40 Orbit Block Accessories Swivel Shackle Base . Accessories to Ronstan Series 40 Orbit blocks.
Brand: Ronstan
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Ball & Socket Swivel Base
Ronstan Ball & Socket Swivel Base And . Accepts all Series 38 and 45 swivel top blocks. Holds blocks upright without capsizing. Stainless steel Weighs 2.3 oz
Brand: Ronstan
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Stanchion Mount Base
Harken Stanchion Mount Base . Ball-and-socket bases allow blocks to articulate so they lead fairly from any direction to any direction. Stanchion base mounts to any 7/8" or 1"dia. stanchion Small and Medium use #10 FHMS; Midrange uses 1/4" FHMS
Brand: Harken
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Cheek Block Curved Base Adapter, Series 40
Ronstan Cheek Block Curved Base Adapter, Series 40 . Cheek blocks can be mounted on masts and booms with this curved surface adapter. Fits Series 40 cheek blocks
Brand: Ronstan
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Stand Up Spring for 40mm Smart Ratchet Block
Ronstan Stand Up Spring For 40mm Smart Ratchet Block . Adjust the ratchet to optimize your performance! 40mm Smart-ratchet blocks are ideal for spinnaker, mainsheet and jibsheet applications on dinghies and off-the-beach catamarans, or for control lines on larger boats. The unique adjustment...
Brand: Ronstan
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