5 Series Cheek Block, Flat Base, 5.9 oz.


In stock online.
Model # 165151 | Mfg # 504-11 | UPC # 740507011634

Schaefer Flat Base Cheek block for clean deck organization and 180° line angles. 

Used extensively for sheet blocks on small- to mid-sized keelboats, and as control line blocks for larger offshore boats. Suitable as mast-base or lead blocks on small- to mid-sized boats. Black anodized aluminum or stainless steel cheeks. Stainless steel straps and posts. 

Key Features 

  • Stainless steel base distributes loads to a large surface area
  • Universal design suits diverse applications and mounting options
  • Anodized Aluminum cheek
  • Smooth UV resistant, Delrin™ sheave
  • Accepts Schaefer "universal" adapters for custom mounting
  • High strength to weight ratio


5 Series Cheek Block, Flat Base, 5.9 oz.

Name Value
Ball Bearings Plain Bearings
Becket No Becket
Diameter 7/16 Inch or 11 mm
Direction Any
Integral Cleat No Integral Cleat
Length 3 5/8 Inches
Mount Type Mechanical Fasteners
Ratchet Non Ratcheting
Safe Working Load 1750 Pounds
Sheave Diameter 51 mm
Type Single Cheek/Foot
Weight 5.9 Ounces


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