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

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

5 out of 5 Customer Rating
  • In Stock
Fulfilled by Vendor, typically 2-3 weeks.

Vendor Shipping Details

This item will be fulfilled from the vendor. Delivery time varies – typically 2–3 weeks.

Restrictions: This item does not ship to a PO Box, APO, FPO, DPO or international address. Expedited shipping is not available.

West Marine will email you when your order ships from the vendor.

This item is currently unavailable.
Enter your email address to be added to the waitlist.
Model # 561308 Mfg # 704-15
Truck Freight

Truck Freight is used to ship items that exceed standard shipping limitations on weight and/or size. Delivery is only applicable within the contiguous United States. Additional shipping fees apply. Signature required for receipt of shipment.

Warning Hazard shipping
Item Can only Ship to Store

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