CM super strong chain shackles

  • These shackles have higher working load limits than specified by Federal Specifications.
  • All shackle pins are forged from alloy steel, heat treated and tempered to give greater strength.
  • All shackles are marked with size (inches and millimeters) and working load limit in tons.
  • Ultimate strength equals 6 times working load limit. Proof load equals 2.2 times working load limit.
  • All bolt, nut & cotter shackles have thread protected ends.
  • When ordering, specify galvanized (G) or painted (P).
  • Galvanized per ASTM A153.
  • Painted shackles are orange.
  • Ton = 2,000 lbs.
  • Standard industry tolerances apply.

Screw Pin Type                                                            Round Pin Type                                                     Bolt & Nut Type

Working Load Limit (tons)

Size (In) Carbon Micro Alloy All Alloy Carbon Micro Alloy All Alloy Carbon Micro Alloy All Alloy Weight (Lbs)
1/4 1/2 3/4
1/2 3/4



.12
5/16 3/4 1
3/4 1



.20
3/8 1 1 1/2 2 1 1 1/2



.30
7/16 1 1/2 2 2 5/8 1 1/2 2



.50
1/2 2 3 3 1/3 2 3 3 1/3 2 3 3 1/3 .75
5/8 3 1/4 4 1/2 5 3 1/4 4 1/2 5 3 1/4 4 1/2 5 1.3
3/4 4 3/4 6 1/2 7 4 3/4 6 1/2 7 4 3/4 6 1/2 7 2.3
7/8 6 1/2 8 1/2 9 1/2 6 1/2 8 1/2 9 1/2 6 1/2 8 1/2 9 1/2 3.5
1 8 1/2 10 12 1/2 8 1/2 10 12 1/2 8 1/2 10 12 1/2 5
1 1/8 9 1/2 12 15 9 1/2 12 15 9 1/2 12 15 7
1 1/4 12 14 18 12 14 18 12 14 18 9.5
1 3/8 13 1/2 17 21 13 1/2 17 21 13 1/2 17 21 12.5
1 1/2 17 20 25 17 20 25 17 20 30 17.2
1 5/8 20 24 29 20 24 29 20 24 35 23.5
1 3/4 25 30 34 25 30 34 25 30 40 27.7
2 35 35 43 35 35 43 35 35 50 39

Dimensions (inches) apply to all styles of anchor shackles
Size Diam of Pin Width Between Eyes Inside Length Outside Diam. of Eye (max) Approx Weight Each (lbs)
P W L R
1/4 5/16 15/32 1 1/8 7/8 .12
5/16 3/8 17/32 1 1/4 1 .20
7/16 1/2 3/4 1 1/16 1 1/4 .50
1/2 5/8 13/16 1 7/8 1 3/8 .75
5/8 3/4 1 1/16 2 3/8 1 7/8 1.3
3/4 7/8 1 1/4 2 13/16 2 1/8 2.3
7/8 1 1 7/16 3 5/16 2 3/8 3.5
1 1 1/8 1 11/16 3 3/4 2 5/8 5.0
1 1/8 1 1/4 1 13/16 4 1/4 2 7/8 7.0
1 1/4 1 3/8 2 1/32 4 11/16 3 1/4 9.5
1 3/8 1 1/2 2 1/4 5 1/4 3 1/2 12.5
1 1/2 1 5/8 2 3/8 5 3/4 3 3/4 17.2
1 5/8 1 3/4 2 5/8 6 1/4 4 1/8 23.5
1 3/4 2 2 7/8 7 4 1/2 27.7
2 2 1/4 3 1/4 7 3/4 5 1/4 39.0

For More information, please visit
www.cmworks.com

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