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5 Series Stand-Up Block (Requires four #10 RHMS), Aluminum Cheeks, 6.5 oz.

Model # 165110 Mfg # 504-62
5 out of 5 Customer Rating
Advice & How-To
Orders placed by 3 PM EST typically ship the same day. Orders placed after this time will be processed the next business day.
Sale Clearance
5 Series Stand-Up Block (Requires four #10 RHMS), Aluminum Cheeks, 6.5 oz.
Model # 165110 Mfg # 504-62
5 out of 5 Customer Rating
Advice & How-To
Orders placed by 3 PM EST typically ship the same day. Orders placed after this time will be processed the next business day.
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Schaefer Stand-Up Swivel block allows full rotation and articulation.

Schaefer Stand up spring block ensures smooth operation and high safe working load. Anodized aluminum cheeks and stainless steel mount allows for effortless running.  

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 

  • Swivels 45° to each side 
  • Stainless steel mount
  • Patented design prevents block from hitting the deck
  • Universal design suits diverse applications and mounting options
  • Tough, hardcoat-anodized aluminum cheeks 
  • Smooth UV resistant, Delrin™ sheave
  • Accepts Schaefer "universal" adapters for custom mounting
  • High strength to weight ratio

Ball Bearings Plain Bearings
Becket No Becket
Diameter 7/16 Inch or 11 mm
Direction Any
Integral Cleat No Integral Cleat
Mount Type Mechanical Fasteners
Ratchet Non Ratcheting
Safe Working Load 1750 Pounds
Type Single Pivoting
Weight 6.5 Ounces
Sheave Diameter 51 mm

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