HLM 680 Construction Block Bolt Only, Wireline Sizes: 3/8″ to 1-1/4” | Single-Sheave Blocks with Thimble Dead-Ends

HLM INDUSTRY 680 Construction Block Bolt Only

Complies with and surpasses ASME B30.26 standards for identification, ductility, design factor, proof load, and temperature resistance. Additionally, these blocks exceed the standard by meeting rigorous performance criteria such as fatigue resistance, impact strength, and full material traceability.​

• Wide Range of products available.
• Capacity: 5 to 100 Tons- Larger models available.
• Sheave sizes: 6″ to 24” O.D.
• Wireline Sizes: 3/8″ to 1-1/4”
• Equipped with genuine HLM forged steel, Quenched and Tempered shackles that contain the patented QUIC-CHECK® markings.
• Design Factor of 4:1.
• 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 bearing.
• Single sheave blocks have thimble dead end.
• Manufactured by an iSO 9001 and APl Q1 Certified facilit
• Meets or exceeds all requirements of ASME B30.26 including identification, ductilit , design factor, proof load and temperature requirements. lmportantly, these blocks meet other critical performance requirements including fatigue life, impact properties and material traceability, not addressed by ASME B30.26.
  OPTIONS AVAILABLE
• Roller bearing sheaves
• Hanger and Bolt Only models available
• Third party testing with certificatio
• Galvanized finish- Most model