7 Series Universal Head Block, Single with Becket, Aluminum Cheeks, 9oz.
Mouse Over to Zoom
-
Click to Enlarge

SCHAEFER7 Series Universal Head Block, Single with Becket, Aluminum Cheeks, 9oz.

$154.99

In stock online.
Model # 561308 | Mfg # 704-15UPC # 740507010712

Specs

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

Name Value
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
Sheave Diameter 60 mm
Type Single
Weight 9 Ounces

Product Overview

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)

Advice

The West Advisor articles have answered boaters' questions and provided solutions to boating problems for more than 20 years. West Marine has compiled one of the Web's most comprehensive collections of technical boating information articles.

Related West Advisor Articles

Reviews

Product Q & A

RETURN TO TOP