Round Pin Shackles






Round pin anchor shackles meet the performance requirements of Federal Specification RR-C-271D Type IVA, Grade A, Class 1, except for those provisions required of the contractor.

  • Working Load Limit permanently shown on every shackle.
  • Forged - Quenched and Tempered, with alloy pins.
  • Capacities 1/3 thru 55 tons.
  • Shackles can be furnished proof tested with certificates to designated standards, such as ABS, DNV, Lloyds, or other certification. Charges for proof testing and certification available when requested at the time of order.
  • Hot Dip galvanized or Self Colored.
  • Fatigue rated.

Nominal Size (inces)

Working Load Limit* (Tons)

Dimensions (Inches)

Tolerance

A

B

C

D

F

G

H

L

N

P

C

A
3/16 § 1/3 0.38 0.25 0.88 0.19 0.56 0.98 1.47 0.16 - 0.19 0.06 0.06
1/4 1/2 0.47 0.31 1.13 0.25 0.61 1.28 1.84 0.19 1.34 0.25 0.06 0.06
5/16 3/4 0.53 0.38 1.22 0.31 0.75 1.47 2.09 0.22 1.59 0.31 0.06 0.06
3/8 1 0.66 0.44 1.44 0.38 0.91 1.78 2.49 0.25 1.86 0.38 0.13 0.06
7/16 1 1/2 0.75 0.5 1.69 0.44 1.06 2.03 2.91 0.31 2.13 0.44 0.13 0.06
1/2 2 0.81 0.63 1.88 0.5 1.31 2.31 3.28 0.38 2.38 0.5 0.13 0.06
5/8 3 1/4 1.06 0.75 2.38 0.63 1.69 2.94 4.19 0.44 2.91 0.69 0.13 0.06
3/4 4 3/4 1.25 0.88 2.81 0.75 2 3.5 4.97 0.5 3.44 0.81 0.25 0.06
7/8 6 1/2 1.44 1 3.31 0.88 2.28 4.03 5.83 0.5 3.81 0.97 0.25 0.06
1 8 1/2 1.69 1.13 3.75 1 2.69 4.69 6.56 0.56 4.53 1.06 0.25 0.06
1-1/8 9 1/2 1.81 1.25 4.25 1.16 2.91 5.16 7.47 0.63 5.13 1.25 0.25 0.06
1-1/4 12 2.03 1.38 4.69 1.29 3.25 5.75 8.25 0.69 5.5 1.38 0.25 0.06
1-3/8 13 1/2 2.25 1.5 5.25 1.42 3.63 6.38 9.16 0.75 6.13 1.5 0.25 0.13
1-1/2 17 2.38 1.63 5.75 1.54 3.88 6.88 10 0.81 6.5 1.62 0.25 0.13
1-3/4 25 2.88 2 7 1.84 5 8.86 12.3 1 7.75 2.25 0.25 0.13
2 35 3.25 2.25 7.75 2.08 5.75 9.97 13.7 1.22 8.75 2.4 0.25 0.13
2-1/2 § 55 4.13 2.75 10.5 2.71 7.25 12.9 17.8 1.38 - 3.13 0.25 0.25

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