76mm Midrange Single Block
5 out of 5 Customer Rating
Model # 407288 Mfg # 1540
Model # 407288 Mfg # 1540
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Harken 76mm Midrange Single Block with three-way head locks in two orientations or swivels.

Great for mainsheet or spinnaker blocks and control lines on offshore yachts. Robust construction handles high loads. Ball-bearing sheaves minimize friction. Beefier posts and wrap-around straps create much higher working loads. Three-way head system permits blocks to swivel or be fixed side-to-side or fore-and-aft. Beckets are removable. Where applicable, blocks use 1/4" fasteners. 

Key Features 

  • Great for mainsheet or spinnaker; control lines on offshore yachts
  • Robust construction handles high loads
  • High-load Torlon® ball-bearing sheaves minimize friction
  • 3-way head system for swivel or fixed mounting
  • Wrap-around stainless straps; stainless-steel shackle
  • Sheave Diameter: 3" (76 mm) 
  • Max. Line Diameter: 9/16" (14 mm)  
  • Max. Working Load (MWL): 1800 lb. (816 kg)  
  • Breaking Load: 5000 lb. (2268 kg)   
  • Weight: 13 oz (367 g) 
  • Length: 6 1/8" (156 mm)

Ball Bearings Delrin
Becket No Becket
Diameter 9/16 Inch or 14 mm
Direction Any
Integral Cleat No Integral Cleat
Length 6 1/8 Inches
Mount Type Swivel Shackle
Ratchet Non Ratcheting
Safe Working Load 1800 Pounds
Type Single
Weight 13 Ounces
Sheave Diameter 75 mm