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- Snatch Blocks, Sheave Blocks and Crane Pulley Blocks/
- Overhead Crane Sheave Blocks & Hooks/
- Crosby McKissick '380 Series' Crane / Hook Blocks, Optional No. of Shaves (1-8), WLL Range from 5000kg to 300 tonne
All single point shank hooks are genuine Crosby®, forged alloy steel, Quenched and Tempered, and have the patented QUIC-CHECK markings (Duplex hooks are available on most sizes). All 380 Blocks are furnished standard with Roller Bearings.
- Reeving Guides Standard - All Models.
- Blocks through 25 tons use 319N Style Hooks with S-4320 latches.
- Sheave lubrication through center pin - Separate lube channel to each bearing.
- Sheaves fully protected by side plates.
- Dual action hook (Swings and Rotates).
- Repair parts available through world wide distribution network.
- Design Factor of 4 to 1 ( unless otherwise noted).
- Manufactured by an ISO 9001 and API Q1 certified facility.
- 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.
Available Options:
- Bronze Bushed Sheaves
- Duplex Hooks
- Swivel Tee and Shackle Assemblies
- Sheave Shrouds
- Anti Rotation - Locking Device (75 tons & larger).
- Plate Steel Cheek Weights
- Third party testing with Certification available upon request.
Dead End Chart
Wire Rope Size (mm) | Wire Rope Size (in.) | Dimensions | ||||||
T Thickness (mm) | U Hole Dia. (mm) | T Thickness (in.) | U Hole Dia. (in.) | McKissick US-422/US-422T Utility Socket | ||||
Stock No. | Size (Metric) | Size (Imperial) | ||||||
11 | 7/16 | 25.4 | 32.5 | 1.00 | 1.28 | 1044309+ | US4 11 | US4 7/16 |
13 | 1/2 | 25.4 | 32.5 | 1.00 | 1.28 | 1044318+ | US4 13 | US4 1/2 |
14 | 9/16 | 25.4 | 32.5 | 1.00 | 1.28 | 1044336+ | US5 14 | US5 9/16 |
16 | 5/8 | 25.4 | 32.5 | 1.00 | 1.28 | 1044345+ | US5 16 | US5 5/8 |
19 | 3/4 | 31.8 | 42.2 | 1.25 | 1.66 | 1044363+ | US6 19 | US6 3/4 |
22 | 7/8 | 31.8 | 42.2 | 1.25 | 1.66 | 1038580 | US7 22 | US7 7/8 |
25 | 1 | 31.8 | 42.2 | 1.25 | 1.66 | 1044417+ | US8 25 | US8 1 |
28 | 1-1/8 | 44.5 | 65.0 | 1.75 | 2.56 | 1044426+ | US10 28 | US10 1-1/8 |
32 | 1-1/4 | 44.5 | 65.0 | 1.75 | 2.56 | 1044435+ | US10 32 | US10 1-1/4 |
Standard Wire Line Sizes for McKissick 380 Utility Crane Blocks
Sheave Diameter (in.) |
Wire Line Size | ||||||||
11mm / 7/16" | 13mm / 1/2" | 14mm / 9/16" | 16mm / 5/8" | 19mm / 3/4" | 22mm / 7/8" | 25mm / 1" | 28mm / 1-1/8" | 32mm / 1-1/4" | |
10 | . | . | . | . | . | . | . | . | . |
12 | . | . | . | . | . | . | . | . | . |
14 | . | . | . | . | . | . | . | . | . |
16 | . | . | . | . | . | . | . | . | . |
18 | . | . | . | . | . | . | . | . | . |
20 | . | . | . | . | . | . | . | . | . |
24 | . | . | . | . | . | . | . | . | . |
*For additional wire rope sizes please contact our sales team.
Dimensional Specifications
Thickness (E) shown is for blocks containing cheek weights (Light Medium - LM, Medium - M, and Heavy - H).
The thickness (E) for non weighted blocks (Light - L) is measured over side plates.
Key to McKissick Utility Crane Block Model Numbers
Example 1: M15D14M = 15 ton (rated at 13.6 metric tonnes), Double sheave (two sheaves), 14 Sheave nominal O.D. and Medium block weight.
Example 2: M100SX18H = 100 ton (rated at 90 metric tonnes), Six sheave, 18 Sheave nominal O.D. and Heavy block weight.
M |
10 |
S |
10 |
L |
|
McKissick Utility Crane Blocks. | Working Load Limit (Tons) | Number of Sheaves | Sheave Nominal O.D.. |
Block Weight | |
S=1 D=2 T=3 Q=4 |
QN=5 SX=6 SV=7 OCT=8 |
L = Light (No Cheek Weight) LM = Light Med. M = Medium H = Heavy |
Dimensional Images
Single Sheave - S | 2 Sheave - D |
![]() |
![]() |
3 Sheave - T | 4 Sheave - Q |
![]() |
![]() |
5 Sheave - QN | 6 Sheave - SX |
![]() |
![]() |
7 Sheave - SV | 8 Sheave - OCT |
![]() |
|
4.5 TONNES (5 tons) to 13.6 TONNES (15 tons)
18 TONNES (20 tons) to 27 TONNES (30 tons)
32 TONNES (35 tons) to 40 TONNES (45 tons)
45 TONNES (50 tons) to 54 TONNES (60 tons)
59 TONNES (65 tons) to 68 TONNES (75 tons)
72 TONNES (80 tons) to 90 TONNES (100 tons)
104 TONNES (115 tons) to 117 TONNES (130 tons)
126 TONNES (140 tons) to 272 TONNES (300 tons)
† Ultimate Load is 4 times the Working Load Limit unless otherwise noted.

Product Warnings
PDF containing all warning information relevant to the safe use of this product
(approx. 0.5Mb)
Crosby catalogue page 276 to 290
(approx. 1.1Mb)
Custom Block Request Form
Please fill out this form and send it back to us and we will quote for the block specifications which you require.
(approx. 0.2Mb)All single point shank hooks are genuine Crosby®, forged alloy steel, Quenched and Tempered, and have the patented QUIC-CHECK markings (Duplex hooks are available on most sizes). All 380 Blocks are furnished standard with Roller Bearings.
- Reeving Guides Standard - All Models.
- Blocks through 25 tons use 319N Style Hooks with S-4320 latches.
- Sheave lubrication through center pin - Separate lube channel to each bearing.
- Sheaves fully protected by side plates.
- Dual action hook (Swings and Rotates).
- Repair parts available through world wide distribution network.
- Design Factor of 4 to 1 ( unless otherwise noted).
- Manufactured by an ISO 9001 and API Q1 certified facility.
- 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.
Available Options:
- Bronze Bushed Sheaves
- Duplex Hooks
- Swivel Tee and Shackle Assemblies
- Sheave Shrouds
- Anti Rotation - Locking Device (75 tons & larger).
- Plate Steel Cheek Weights
- Third party testing with Certification available upon request.
Dead End Chart
Wire Rope Size (mm) | Wire Rope Size (in.) | Dimensions | ||||||
T Thickness (mm) | U Hole Dia. (mm) | T Thickness (in.) | U Hole Dia. (in.) | McKissick US-422/US-422T Utility Socket | ||||
Stock No. | Size (Metric) | Size (Imperial) | ||||||
11 | 7/16 | 25.4 | 32.5 | 1.00 | 1.28 | 1044309+ | US4 11 | US4 7/16 |
13 | 1/2 | 25.4 | 32.5 | 1.00 | 1.28 | 1044318+ | US4 13 | US4 1/2 |
14 | 9/16 | 25.4 | 32.5 | 1.00 | 1.28 | 1044336+ | US5 14 | US5 9/16 |
16 | 5/8 | 25.4 | 32.5 | 1.00 | 1.28 | 1044345+ | US5 16 | US5 5/8 |
19 | 3/4 | 31.8 | 42.2 | 1.25 | 1.66 | 1044363+ | US6 19 | US6 3/4 |
22 | 7/8 | 31.8 | 42.2 | 1.25 | 1.66 | 1038580 | US7 22 | US7 7/8 |
25 | 1 | 31.8 | 42.2 | 1.25 | 1.66 | 1044417+ | US8 25 | US8 1 |
28 | 1-1/8 | 44.5 | 65.0 | 1.75 | 2.56 | 1044426+ | US10 28 | US10 1-1/8 |
32 | 1-1/4 | 44.5 | 65.0 | 1.75 | 2.56 | 1044435+ | US10 32 | US10 1-1/4 |
Standard Wire Line Sizes for McKissick 380 Utility Crane Blocks
Sheave Diameter (in.) |
Wire Line Size | ||||||||
11mm / 7/16" | 13mm / 1/2" | 14mm / 9/16" | 16mm / 5/8" | 19mm / 3/4" | 22mm / 7/8" | 25mm / 1" | 28mm / 1-1/8" | 32mm / 1-1/4" | |
10 | . | . | . | . | . | . | . | . | . |
12 | . | . | . | . | . | . | . | . | . |
14 | . | . | . | . | . | . | . | . | . |
16 | . | . | . | . | . | . | . | . | . |
18 | . | . | . | . | . | . | . | . | . |
20 | . | . | . | . | . | . | . | . | . |
24 | . | . | . | . | . | . | . | . | . |
*For additional wire rope sizes please contact our sales team.
Dimensional Specifications
Thickness (E) shown is for blocks containing cheek weights (Light Medium - LM, Medium - M, and Heavy - H).
The thickness (E) for non weighted blocks (Light - L) is measured over side plates.
Key to McKissick Utility Crane Block Model Numbers
Example 1: M15D14M = 15 ton (rated at 13.6 metric tonnes), Double sheave (two sheaves), 14 Sheave nominal O.D. and Medium block weight.
Example 2: M100SX18H = 100 ton (rated at 90 metric tonnes), Six sheave, 18 Sheave nominal O.D. and Heavy block weight.
M |
10 |
S |
10 |
L |
|
McKissick Utility Crane Blocks. | Working Load Limit (Tons) | Number of Sheaves | Sheave Nominal O.D.. |
Block Weight | |
S=1 D=2 T=3 Q=4 |
QN=5 SX=6 SV=7 OCT=8 |
L = Light (No Cheek Weight) LM = Light Med. M = Medium H = Heavy |
Dimensional Images
Single Sheave - S | 2 Sheave - D |
![]() |
![]() |
3 Sheave - T | 4 Sheave - Q |
![]() |
![]() |
5 Sheave - QN | 6 Sheave - SX |
![]() |
![]() |
7 Sheave - SV | 8 Sheave - OCT |
![]() |
|
4.5 TONNES (5 tons) to 13.6 TONNES (15 tons)
18 TONNES (20 tons) to 27 TONNES (30 tons)
32 TONNES (35 tons) to 40 TONNES (45 tons)
45 TONNES (50 tons) to 54 TONNES (60 tons)
59 TONNES (65 tons) to 68 TONNES (75 tons)
72 TONNES (80 tons) to 90 TONNES (100 tons)
104 TONNES (115 tons) to 117 TONNES (130 tons)
126 TONNES (140 tons) to 272 TONNES (300 tons)
† Ultimate Load is 4 times the Working Load Limit unless otherwise noted.

Product Warnings
PDF containing all warning information relevant to the safe use of this product
(approx. 0.5Mb)
Crosby catalogue page 276 to 290
(approx. 1.1Mb)
Custom Block Request Form
Please fill out this form and send it back to us and we will quote for the block specifications which you require.
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