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7 Series Universal Head Block, Single with Becket, Aluminum Cheeks, 9oz.

Model # 561308 Mfg # 704-15
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
7 Series Universal Head Block, Single with Becket, Aluminum Cheeks, 9oz.
Model # 561308 Mfg # 704-15
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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Complete Your Purchase

Schaefer Single Aluminum Block includes an integral becket that allows either a 2:1 or 3:1 purchase. 

Universal head allows one block to function as a front shackle, side shackle or swivel shackle block. Large sheave diameter and high working loads make them suitable for sheet and control blocks on medium to large offshore boats. Beckets are removable. 704 series are aluminum; 705 blocks are stainless. Where applicable, blocks use 1/4" fasteners.

Key Features

  • Low-friction and high safe working load
  • 704 series are aluminum; 705 blocks are stainless
  • Beckets are removable; where applicable
  • Swivel head may be locked in place to eliminate line twist
  • Delrin® Bearings
  • Sheave Diameter: 2 3/8" (60 mm) 
  • Max. Line Diameter: 1/2" (13 mm)  
  • Max. Working Load (MWL): 2250 lb. (1020 kg)  
  • Weight: 9.0 oz (255 g) 
  • Length: 6 9/32" (160 mm)

Ball Bearings Plain Bearings
Becket Becket
Diameter 1/2 Inch or 13 mm
Direction Any
Integral Cleat No Integral Cleat
Length 6 9/32 Inches
Mount Type Swivel Shackle
Ratchet Non Ratcheting
Safe Working Load 2250 Pounds
Type Single
Weight 9 Ounces
Sheave Diameter 60 mm

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