Construction Blocks

680 Construction Blocks

• Wide Range of product available:
• Capacity: 5 to 100 tons - Larger models available
• Sheave sizes: 6" to 24" O.D.
• Wire Line Sizes:  3/8" to 1-1/4"
• Equipped with genuine Crosby® forged steel,Quenched and Tempered shackles that contain the patented QUIC-CHECK® markings.
• Design Factor 4 to 1.

With Shackle

• All 680 Series Blocks are furnished standard
  with Bronze Bushings.
• All 680 blocks 16" and larger, are furnished with McKissick® Roll Forged™ Sheaves with 
  flame hardened grooves.
• Sheaves are lubricated through center pin, with 
  a separate lube channel to each sheave.
• Manufactured by an ISO 900q and API Q1 Certified facility. 

Options Available:

• Roller bearing sheaves
• Hanger & Bolt Only models available
• Third party testing with certification
• Galvanized finish - Most models