Crosby McKissick 420 / 421 / 406 Snatch Blocks


  • Hooks and side plates are forged alloy steel and heat treated.
  • Shackles and yokes are forged and heat treated steel.
  • All parts are forged.
  • Side plates are designed to eliminate possibility of rope jamming.
  • Can be furnished with bronze bushings or sealed roller bearings.
  • Opening feature permits insertion of rope while block is suspended from gin-pole.
  • Can be furnished with S-4320 hook latch.
  • Pressure lube fittings.
  • Hook and shackle assemblies can be interchanged.
  • Blocks furnished with dual rated wireline sheaves.
  • Fatigue Rated.
  • All sizes are RFID EQUIPPED.
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Meets or exceeds all requirements of ASME B30.26, including identification, ductility, design factor, proof load and temperature requirements. Importantly, these blocks meet other critical performance requirements, including fatigue life, impact properties and material traceability, not addressed by ASME B30.26.

420 / 421 / 406 Snatch Blocks Types

420 / 421 / 406 Snatch Blocks Specs

* Ultimate Load is 4 times the Working Load Limit.

† May be furnished in other Wire Rope sizes.

Note: When ordering, please specify: size, block number, hook or shackle, bronze bushed or roller bearing, and wire rope size.

Note: Tail Board does not contain the spool that is required with the hook (420) and shackle (421) snatch blocks.




Crosby is the world leader in rigging, lifting, and material handling hardware. We set the standard for quality, training, and technical expertise in the field.

The Crosby Group was the first to:

  • Produce the forged wire rope clip (1880s)
  • Produce wire rope guards on sheaves that can be opened for easy reeving (1925)
  • Forge load rating (working load limit) directly onto product (1958)
  • Quench and temper fittings for more reliable performance (1973)
  • Forge Product Identification Code (PIC) into each product that allows traceability to its respective date of production and material certification (1977)
  • Rate products as Fatigue Rated (1991)
  • Forge patented QUIC-CHECK™ markings into hooks, shackles, and various other rigging products to assist users in determining proper use (1992)
  • Produce a crane block that can be reeved without removing the wedge socket from wire rope in the United States (1996)
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All product warnings: Warnings Page