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McKissick® 380 Series Hook Block

The 380 Series Hook Block is a high quality Utility Crane Block. It is available in a wide range of sizes and furnished standard with Roller Bearings.

  • 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.
  • 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.

Description

  • 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”.
  • “Look for the Orange Hook … the mark of the 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 Certifications available upon request

Specifications

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

Wireline Size (in)Dimensions (in):
(T) Thickness
Dimensions (in):
(U) Hole Diameter
Recommended Wedge Socket (McKissick US-422 / US-422T Utility Socket):
Stock No.
Recommended Wedge Socket (McKissick US-422 / US-422T Utility Socket):
Size
7/161.001.281044309+US4 7/16
1/21.001.281044318+US4 1/2
9/161.001.281044336+US5 9/16
5/81.001.281044345+US5 5/8
3/41.251.661044363+US6 3/4
7/81.251.661038580US7 7/8
11.251.661044417+US8 1
1-1/81.752.561044426+US10 1-1/8
1-1/41.752.561044435+US10 1-1/4

*To find Dead End Dimensions for Single Sheave blocks, refer to blocks, refer to block tables on pages 313 of McKissick blocks cataglo
+ US-422T Terminator Style