McKissick® 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 of 4 to 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 API Q1 Certified facility.
Options Available:
- Roller bearing sheaves
- Hanger & Bolt Only models available
- Third party testing with certification
- Galvanized finish - Most models
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 | | With Shackle |
 | | With Hanger |
 | | Bolt Only |
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