29mm Double Wire Bullet Block
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HARKEN29mm Double Wire Bullet Block


In stock online.
Model # 252858 | Mfg # 100UPC # 97653003069
29mm Double Wire Bullet Block




29mm Double Wire Bullet Block

Name Value
Ball Bearings Delrin
Becket No Becket
Diameter 5/16 Inch
Direction Any
Integral Cleat No Integral Cleat
Length 2 3/4 Inches
Mount Type Side Shackle
Ratchet Non Ratcheting
Safe Working Load 750 Pounds
Sheave Diameter 29 mm
Type Double
Weight 2.75 Ounces

Product Overview

The Harken 100 29mm Double Wire Bullet Block is a heavy-duty block with 250 pounds more load capacity than the light-duty 084 Double Block.

Designed for vangs, outhauls or shrouds where wire is used or for rope where loads are too high for regular bullet blocks. Roller bearings handle high loads better than ball bearings. Sheaves are PTFE-impregnated, Hardkote anodized aluminum for strength. They deliver dependable fast trim and release under high or low loads.

A range of styles lets these blocks adapt to almost all control line applications. Ideal for cunninghams, vangs, outhauls, traveler controls, spinnaker controls, barberhaulers, etc. 

Key Features

  • Extremely popular double wire block found on sailboats of all sizes
  • Used on many types of control systems
  • Corrosion-resistant stainless steel straps reinforce these blocks
  • Ball bearings, sheave and sideplates are UV stabilized
  • Fast trim and release under load: Free-running ball bearings roll on flat races with minimal friction
  • Sheave Diameter: 1 1/8" (29 mm)
  • Max. Line Diameter: 5/16" (8 mm)
  • Max. Working Load (MWL): 750 lb. (340 kg)
  • Breaking Load: 2000 lb. (907 kg)
  • Weight: 2.75 oz. (78 g)
  • Length: 2 3/4" (70 mm)
  • Shackle Pin Diameter: 3/16" (5 mm)


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