Harken® 377 Micro Block Forkhead
SKU: 377111
MSRP $25.20/EA
Save 12%
2 Available


Harken® Micro Block Forkhead is a compact, low-friction, lightweight block with a smaller sheave diameter of 7/8" (22 mm). They are ideal for use on smaller dinghies and lightly loaded control lines on boats of all sizes. Similar to a regular micro block, this block has a fixed head with a removable pin for easy attaching and detaching in applications where you may need to move the shackle but do not want much slack in the attachment. Designed for all control applications on boats where up to 1/4" (6 mm) line is used, this block has a fast trim and releases under both high and low loads. Delrin® ball bearings ride on flat races for ultimate low load performance yet they are capable of working loads of 200 pounds (91 kg). Easy maintenance: just flush with mild soap and fresh water. Use the Micro Block Forkhead for traveler controls, cunninghams & outhauls, vangs, barber haulers, flag halyards, lead car return tackles and leech cords.


  • Includes Fixed Head with a Removable Pin
  • UV-Stabilized Delrin© Free-Rolling Ball Bearings
  • UV-Stabilized Delrin© Sheave
  • Marine Grade 316 Stainless Steel Side Plates
  • Compact and Lightweight
  • Fast Trim


Sale Unit: EA
Brand: Harken
Number of Sheaves: 1
Sheave Diameter: 7/8 inch (22mm)
Length: 1-21/32 inches (42 mm)
Weight: 0.56 ounce (16 g)
Maximum Line Diameter: 1/4 inch (6 mm)
Maximum Working Load: 200 pounds (91 kg)
Breaking Strength: 1,200 pounds (544 kg)



A. 1.660”
B. 0.875”
C. 0.385”
D. 0.250”
E. 0.518”


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