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Crosby® 380 Series Hook Blocks

Crosby® 380 Series Hook Blocks
  • Wide range of product available.
    • Capacity: 5 to 300 Tons – Larger Models Available.
    • Sheave Sizes: 10” to 30”.
    • Wireline Sizes: 7/16” to 1-3/8”.
  • Manufactured by an ISO 9001 and API Q1 certified facility.
  • All single point shank hooks are genuine Crosby®, forged alloy steel, Quenched and Tempered, and have the patented QUICCHECK® markings (Duplex hooks are available on all sizes).
  • All 380 Blocks are furnished standard with Roller Bearings.

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WARNINGS & CAUTIONS

WARNINGS & CAUTIONS

Dead End Chart
(Double, Triple, & Quad Sheave Blocks*)

Wireline Size (in.) Dimensions (in.) Recommended Wedge Socket
T
Thickness		 U
Hole
Diameter		 McKissick® US-422 / US-422T Utility Socket
Stock No. Size
7/16 1.00 1.28 1044309+ US4 7/16
1/2 1.00 1.28 1044318+ US4 1/2
9/16 1.00 1.28 1044336+ US5 9/16
5/8 1.00 1.28 1044345+ US5 5/8
3/4 1.25 1.66 1044363+ US6 3/4
7/8 1.25 1.66 1038580 US7 7/8
1 1.25 1.66 1044417+ US8 1
1-1/8 1.75 2.56 1044426+ US10 1-1/8
1-1/4 1.75 2.56 1044435+ US10 1-1/4

+ US-422T Terminator Style.

  • Reeving Guide Standard – All Models
  • Blocks thru 25 tons use 319N style hooks with S-4320 latches.
  • Sheaves lubrication through center pin – separate lube channel to each bearing.
  • Sheave fully protected by side plates.
  • Dual action hook (swings and rotates).
  • Repair parts available through worldwide distribution network.
  • Design Factor of 4 to 1 (unless otherwise noted).
  • All 380 blocks 16” and larger are furnished with McKissick® Roll-Forged sheaves with flame hardened grooves.
  • “Look for the Orange Hook … the mark of genuine McKissick® quality”.

 

Options Available

  • Bronze Bushed Sheaves
  • Duplex Hooks
  • Swivel Tee and Shackle Assemblies
  • Sheave Shrouds
  • Anti Rotation Hook – Locking Device
  • Plate Steel Cheek Weights
  • Third party testing with Certification available upon request.

 

WARNING: Prop 65: Products supplied by CERTEX USA may expose you to chemicals including Nickel, which is known to the State of California to cause cancer. For more information, visit to www.P65Warnings.ca.gov.

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