Sailing Single Blocks

Sailing Single Blocks
  • Lewmar® - Synchro Single Fiddle Block with Becket, Cam Cleat & Swivel Shackle for 1/4" D Lines
    Lewmar®Synchro Single Fiddle Block with Becket, Cam Cleat & Swivel Shackle for 1/4" D Lines (29925039BK)
    0
    # mpn4851561050
    Synchro Single Fiddle Block with Becket, Cam Cleat & Swivel Shackle for 1/4" D Lines by Lewmar®. Lewmar's Synchro Blocks are engineered for speed, efficiency and superior handling. Lewmar uses a combination of scientifically optimised...
    Stainless steel strap for improved strength and longer service lifeStiff glass fibre reinforced cheeks to prevent lines from wedging
    $85.55
  • Lewmar® - Synchro Single Fiddle Block with Swivel Shackle for 1/4" D Lines
    Lewmar®Synchro Single Fiddle Block with Swivel Shackle for 1/4" D Lines (29925031BK)
    0
    # mpn4851561046
    Synchro Single Fiddle Block with Swivel Shackle for 1/4" D Lines by Lewmar®. Lewmar's Synchro Blocks are engineered for speed, efficiency and superior handling. Lewmar uses a combination of scientifically optimised block geometry, a...
    Stainless steel strap for improved strength and longer service lifeStiff glass fibre reinforced cheeks to prevent lines from wedging
    $47.66
  • Lewmar® - Synchro Single Utility Block with Swivel Shackle for 1/4" D Lines
    Lewmar®Synchro Single Utility Block with Swivel Shackle for 1/4" D Lines (29925001BK)
    0
    # mpn4476179779
    Synchro Single Utility Block with Swivel Shackle for 1/4" D Lines by Lewmar®. Lewmar's Synchro Blocks are engineered for speed, efficiency and superior handling. Lewmar uses a combination of scientifically optimised block geometry, a...
    Stainless steel strap for improved strength and longer service lifeStiff glass fibre reinforced cheeks to prevent lines from wedging
    $30.86
  • Lewmar® - Synchro Single Utility Block with Swivel Shackle for 5/16" D Lines
    Lewmar®Synchro Single Utility Block with Swivel Shackle for 5/16" D Lines (29926001BK)
    0
    # mpn4476179778
    Synchro Single Utility Block with Swivel Shackle for 5/16" D Lines by Lewmar®. Lewmar's Synchro Blocks are engineered for speed, efficiency and superior handling. Lewmar uses a combination of scientifically optimised block geometry, a...
    Stainless steel strap for improved strength and longer service lifeStiff glass fibre reinforced cheeks to prevent lines from wedging
    $46.47
  • Ronstan® - 40 Series Sheave Single Utility Block with Cheek for 1/8" D Lines
    Ronstan®40 Series Sheave Single Utility Block with Cheek for 1/8" D Lines
    0
    # 2141044249
    40 Series Sheave Single Utility Block with Cheek for 1/8" D Lines by Ronstan®. If you’re an avid sailboat enthusiast looking to enhance your experience on the water, then top-quality sailing products offered on our virtual shelves are...
    Exceptionally high working loadsLow maintenance, long service life
    $32.74 - $80.80
  • Barton® - 5 Series Plain Bearing Sheave Single Fiddle Block with Swivel Shackle for 7/16" D Lines
    Barton®5 Series Plain Bearing Sheave Single Fiddle Block with Swivel Shackle for 7/16" D Lines
    0
    # 3891277617
    5 Series Plain Bearing Sheave Single Fiddle Block with Swivel Shackle for 7/16" D Lines by Barton®. If you’re an avid sailboat enthusiast looking to enhance your experience on the water, then top-quality sailing products offered on...
    High quality at an affordable priceExpertly made from premium materials
    $50.15 - $57.73
  • Harken® - Ball Bearing Sheave Single Utility Block with Swivel Shackle for 9/16" D Lines
    Harken®Ball Bearing Sheave Single Utility Block with Swivel Shackle for 9/16" D Lines
    0
    # 3891277619
    Ball Bearing Sheave Single Utility Block with Swivel Shackle for 9/16" D Lines by Harken®. Midrange blocks robust construction makes them ideal to handle the high loads found on medium and large offshore boats. Sheave runs exclusively...
    High quality at an affordable priceExpertly made from premium materials
    $136.95 - $183.95
  • Harken® - Carbo Single Utility Block with Swivel Shackle for 3/8" D Lines
    Harken®Carbo Single Utility Block with Swivel Shackle for 3/8" D Lines
    0
    # 4801072185
    Carbo Single Utility Block with Swivel Shackle for 3/8" D Lines by Harken®. Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact...
    High quality at an affordable priceExpertly made from premium materials
    $36.95 - $53.95
  • Harken® - Fiddle Block with Swivel Shackle for 3/8" D Lines
    Harken®Fiddle Block with Swivel Shackle for 3/8" D Lines
    0
    # 2170096757
    Fiddle Block with Swivel Shackle for 3/8" D Lines by Harken®. If you’re an avid sailboat enthusiast looking to enhance your experience on the water, then top-quality sailing products offered on our virtual shelves are for you. Made...
    High quality at an affordable priceExpertly made from premium materials
    $50.95 - $70.95
  • Harken® - Sheave Single Ratchet Block with Loop & Swivel for 3/8" D Lines
    Harken®Sheave Single Ratchet Block with Loop & Swivel for 3/8" D Lines
    0
    # 3205567716
    Sheave Single Ratchet Block with Loop & Swivel for 3/8" D Lines by Harken®. If you’re an avid sailboat enthusiast looking to enhance your experience on the water, then top-quality sailing products offered on our virtual shelves are...
    High quality at an affordable priceExpertly made from premium materials
    $75.95 - $89.95
  • Harken® - Sheave Single Ratchet Block with Swivel for 3/8" D Lines
    Harken®Sheave Single Ratchet Block with Swivel for 3/8" D Lines
    0
    # 3205565707
    Sheave Single Ratchet Block with Swivel for 3/8" D Lines by Harken®. If you’re an avid sailboat enthusiast looking to enhance your experience on the water, then top-quality sailing products offered on our virtual shelves are for you....
    High quality at an affordable priceExpertly made from premium materials
    $69.95 - $82.95
  • Ronstan® - 20 Series Orbitblock™ Ball Bearing Shave Single Utility Block with Becket & Dyneema Lashing for 1/4" D Lines
    Ronstan®20 Series Orbitblock™ Ball Bearing Shave Single Utility Block with Becket & Dyneema Lashing for 1/4" D Lines
    0
    # 3198006752
    20 Series Orbitblock™ Ball Bearing Shave Single Utility Block with Becket & Dyneema Lashing for 1/4" D Lines by Ronstan®. If you’re an avid sailboat enthusiast looking to enhance your experience on the water, then top-quality...
    Leech / control linesCunninghams
    $13.98 - $73.44
  • Ronstan® - Sheave Single Block with Swivel Snap Shackle for 1/2" D Lines
    Ronstan®Sheave Single Block with Swivel Snap Shackle for 1/2" D Lines
    0
    # 2141044201
    Sheave Single Block with Swivel Snap Shackle for 1/2" D Lines by Ronstan®. Snatch blocks are a tough and reliable solution for temporary leads and line deflection. Simple and quick to deploy, they can be easily opened when the load is...
    Easily operated latch mechanismLightweight
    $159.08 - $221.84
  • Ronstan® - Shock Block
    Ronstan®Shock Block
    0
    # 1732182779
    Shock Block by Ronstan®. The obvious choice for those kitesurfers, paragliders, control line deflections and purchase systems that require a lightweight high load capacity block. If you’re an avid sailboat enthusiast looking to...
    Performance & versatilityUltra lightweight
    $14.46 - $19.63
  • Schaefer® - Flat Base Single Cheek Block for 7/16" D Lines
    Schaefer®Flat Base Single Cheek Block for 7/16" D Lines
    0
    # 2148573498
    Flat Base Single Cheek Block for 7/16" D Lines by Schaefer®. If you’re an avid sailboat enthusiast looking to enhance your experience on the water, then top-quality sailing products offered on our virtual shelves are for you. Made...
    Created by professionals to meet your requirementsMade with dedication to forward-thinking design and high quality
    $66.16 - $92.03
  • Schaefer® - Single Block with Swivel Shackle for 1/2" D Lines
    Schaefer®Single Block with Swivel Shackle for 1/2" D Lines
    0
    # 4801072186
    Single Block with Swivel Shackle for 1/2" D Lines by Schaefer®. If you’re an avid sailboat enthusiast looking to enhance your experience on the water, then top-quality sailing products offered on our virtual shelves are for you. Made...
    Created by professionals to meet your requirementsMade with dedication to forward-thinking design and high quality
    $103.47 - $134.91
  • Schaefer® - Single T-Track Block with Stand-Up Head for 1/2" D Lines
    Schaefer®Single T-Track Block with Stand-Up Head for 1/2" D Lines
    0
    # 2148573457
    Single T-Track Block with Stand-Up Head for 1/2" D Lines by Schaefer®. If you’re an avid sailboat enthusiast looking to enhance your experience on the water, then top-quality sailing products offered on our virtual shelves are for...
    Created by professionals to meet your requirementsMade with dedication to forward-thinking design and high quality
    $253.79 - $276.90
  • Schaefer® - Single Utility Block with Swivel Shackle for 7/16" D Lines
    Schaefer®Single Utility Block with Swivel Shackle for 7/16" D Lines
    0
    # 2148573473
    Single Utility Block with Swivel Shackle for 7/16" D Lines by Schaefer®. If you’re an avid sailboat enthusiast looking to enhance your experience on the water, then top-quality sailing products offered on our virtual shelves are for...
    Created by professionals to meet your requirementsMade with dedication to forward-thinking design and high quality
    $68.25 - $94.95
  • Barton® - 3 Series Plain Bearing Sheave Single Utility Block with Becket & Snap Shackle for 3/8" D Lines
    Barton®3 Series Plain Bearing Sheave Single Utility Block with Becket & Snap Shackle for 3/8" D Lines (N03 141)
    0
    # mpn4701853991
    3 Series Plain Bearing Sheave Single Utility Block with Becket & Snap Shackle for 3/8" D Lines by Barton®. Size 3 block range incorporates modern design with stainless steel frames and the latest advanced materials, using 30% fibre...
    High quality at an affordable priceExpertly made from premium materials
    $73.08
  • Barton® - 4 Series Plain Bearing Sheave Single Upright Lead Block for 7/16" D Lines
    Barton®4 Series Plain Bearing Sheave Single Upright Lead Block for 7/16" D Lines (N04 150)
    0
    # mpn4701853808
    4 Series Plain Bearing Sheave Single Upright Lead Block for 7/16" D Lines by Barton®. Size 4 range is of a rugged construction, featuring high grade moulded side plates that are through-bolted and riveted for added strength and...
    High quality at an affordable priceExpertly made from premium materials
    $47.90
  • Barton® - 4 Series Plain Bearing Sheave Single Utility Block with Cheek & Back Plate for 7/16" D Lines
    Barton®4 Series Plain Bearing Sheave Single Utility Block with Cheek & Back Plate for 7/16" D Lines (N04 160)
    0
    # mpn4701853812
    4 Series Plain Bearing Sheave Single Utility Block with Cheek & Back Plate for 7/16" D Lines by Barton®. Size 4 range is of a rugged construction, featuring high grade moulded side plates that are through-bolted and riveted for added...
    High quality at an affordable priceExpertly made from premium materials
    $39.33
  • Barton® - 5 Series Plain Bearing Sheave Single Fiddle Block with Becket and Cam Cleat for 7/16" D Lines
    Barton®5 Series Plain Bearing Sheave Single Fiddle Block with Becket and Cam Cleat for 7/16" D Lines (N05 641)
    0
    # mpn4701853993
    5 Series Plain Bearing Sheave Single Fiddle Block with Becket and Cam Cleat for 7/16" D Lines by Barton®. Size 5 range is of a rugged construction, featuring high grade moulded side plates that are through-bolted and riveted for added...
    High quality at an affordable priceExpertly made from premium materials
    $170.58
  • Barton® - 5 Series Plain Bearing Sheave Single Fiddle Block with Becket, Cam Cleat & Swivel Shackle for 7/16" D Lines
    Barton®5 Series Plain Bearing Sheave Single Fiddle Block with Becket, Cam Cleat & Swivel Shackle for 7/16" D Lines (N05 631)
    0
    # mpn4701853989
    5 Series Plain Bearing Sheave Single Fiddle Block with Becket, Cam Cleat & Swivel Shackle for 7/16" D Lines by Barton®. Size 5 range is of a rugged construction, featuring high grade moulded side plates that are through-bolted and...
    High quality at an affordable priceExpertly made from premium materials
    $134.45
  • Barton® - 5 Series Plain Bearing Sheave Single Fiddle Block with Swivel Shackle for 7/16" D Lines
    Barton®5 Series Plain Bearing Sheave Single Fiddle Block with Swivel Shackle for 7/16" D Lines (N05 420)
    0
    # mpn4757405327
    5 Series Plain Bearing Sheave Single Fiddle Block with Swivel Shackle for 7/16" D Lines (N05 420) by Barton®. Size 5 range is of a rugged construction, featuring high grade moulded side plates that are through-bolted and riveted for...
    High quality at an affordable priceExpertly made from premium materials
    $50.15
  • Barton® - 5 Series Plain Bearing Sheave Single Fiddle Block with Swivel Shackle for 7/16" D Lines
    Barton®5 Series Plain Bearing Sheave Single Fiddle Block with Swivel Shackle for 7/16" D Lines (N05 430)
    0
    # mpn4701853988
    5 Series Plain Bearing Sheave Single Fiddle Block with Swivel Shackle for 7/16" D Lines (N05 430) by Barton®. With removable shackle. Size 5 range is of a rugged construction, featuring high grade moulded side plates that are...
    High quality at an affordable priceExpertly made from premium materials
    $57.73
  • Barton® - 5 Series Plain Bearing Sheave Single Utility Block with Snap Shackle for 7/16" D Lines
    Barton®5 Series Plain Bearing Sheave Single Utility Block with Snap Shackle for 7/16" D Lines (N05 140)
    0
    # mpn4701853992
    5 Series Plain Bearing Sheave Single Utility Block with Snap Shackle for 7/16" D Lines by Barton®. Ideal for quick-release downhauls or vang tackles. Size 5 range is of a rugged construction, featuring high grade moulded side plates...
    High quality at an affordable priceExpertly made from premium materials
    $102.79
  • Harken® - 1-9/16" Carbo Fiddle Block with Swivel Shackle for 3/8" D Lines
    Harken®1-9/16" Carbo Fiddle Block with Swivel Shackle for 3/8" D Lines (2655)
    0
    # mpn4648844631
    1-9/16" Carbo Fiddle Block with Swivel Shackle for 3/8" D Lines (2655) by Harken®. Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic line, these small, compact...
    High quality at an affordable priceExpertly made from premium materials
    $50.95
  • Harken® - 1-9/16" Sheave Single Ratchet Block with Loop & Swivel for 3/8" D Lines
    Harken®1-9/16" Sheave Single Ratchet Block with Loop & Swivel for 3/8" D Lines (2609)
    0
    # mpn4702351756
    1-9/16" Sheave Single Ratchet Block with Loop & Swivel for 3/8" D Lines (2609) by Harken®. Carbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. 2608, 2609, and 2614 have...
    High quality at an affordable priceExpertly made from premium materials
    $75.95
  • Harken® - 1-9/16" Sheave Single Ratchet Block with Swivel for 3/8" D Lines
    Harken®1-9/16" Sheave Single Ratchet Block with Swivel for 3/8" D Lines (2608)
    0
    # mpn4702351765
    1-9/16" Sheave Single Ratchet Block with Swivel for 3/8" D Lines (2608) by Harken®. Carbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. 2608, 2609, and 2614 have on/off...
    High quality at an affordable priceExpertly made from premium materials
    $69.95
  • Harken® - 2-1/4" Carbo Fiddle Block with Swivel Shackle for 3/8" D Lines
    Harken®2-1/4" Carbo Fiddle Block with Swivel Shackle for 3/8" D Lines (2622)
    0
    # mpn4648844629
    2-1/4" Carbo Fiddle Block with Swivel Shackle for 3/8" D Lines (2622) by Harken®. Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small,...
    High quality at an affordable priceExpertly made from premium materials
    $70.95




Blocks are essential devices in sailing. Essentially, a block is a pulley; typically, it consists of a frame containing a grooved wheel that can accommodate a line. Assemblies with only one wheel or sheave are called single blocks. You can find them all over a sailboat; they are used to lift loads or maneuver sheets with minimal friction regardless of which direction the rope moves in. They can also be used in combination. Single sailing blocks can be made of different materials, including metal, wood, and plastic. Typically, their names imply their function.

For example, there are fiddle, linked, shock, spinnaker, utility, and simple sheave blocks, among other types. On our virtual shelves, we have selected a broad choice of quality single sailing blocks to fit every type of vessel. The features defining the blocks include the line diameter, sheave type, maximum load, and other specific characteristics. Depending on the purpose and task, there are blocks with a back plate, becket, snap shackle, and swivel fork, among others. We offer exclusive products made by trusted companies, tested to meet or exceed industry standards, and built to deliver performance and long-lasting efficiency.

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All manufacturer names, symbols, and descriptions, used in our images and text are used solely for identification purposes only. It is neither inferred nor implied that any item sold by BOATiD.com is a product authorized by or in any way connected with any manufacturers displayed on this page.
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