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OneMonroe rigging shackles are designed for safe and reliable lifting, towing, and load securement applications across construction, marine, transportation, and industrial environments. Available in a variety of styles, sizes, materials, and load capacities, these shackles provide the strength and durability required for demanding rigging operations.

All shackles meet or exceed Federal Specification RRC-271D and feature permanently marked Working Load Limits and traceability codes on the body and pin. Available in painted, galvanized, and self-colored finishes, they include alloy quenched and tempered pins for added strength. Independent testing has verified extreme deformation before failure, while optional testing and certification services are available upon request. Custom engineering solutions are also offered, and all shackles are manufactured with a 5:1 design factor.

Alloy Anchor Shackle
Carbon Anchor Shackles
Unit of Measure
1 

Item #

Item Name

IntegrationID

Pin Diameter

D - Width

E - Head Diameter

W - Opening

R - Outer Head Diameter

L - Clearance

B - Opening (Min)

Working Load Limit

Quantity
M650A N/A Alloy Anchor Shackles N/A
13505
N/A 0.630 in N/A 0.50 in N/A 0.7 in N/A 0.84 in N/A 1.34 in N/A 1.94 in N/A 1.38 in N/A 3.30 Ton
M651A N/A Alloy Anchor Shackles N/A
13506
N/A 0.75 in N/A 0.63 in N/A 0.83 in N/A 1.06 in N/A 1.66 in N/A 2.41 in N/A 1.63 in N/A 5.00 Ton
M652A N/A Alloy Anchor Shackles N/A
13507
N/A 0.880 in N/A 0.75 in N/A 0.95 in N/A 1.28 in N/A 1.94 in N/A 2.84 in N/A 1.89 in N/A 7.00 Ton
M653A N/A Alloy Anchor Shackles N/A
13508
N/A 1.000 in N/A 0.88 in N/A 1.09 in N/A 1.44 in N/A 2.14 in N/A 3.31 in N/A 2.06 in N/A 9.50 Ton
M654A N/A Alloy Anchor Shackles N/A
13509
N/A 1.130 in N/A 1.00 in N/A 1.22 in N/A 1.72 in N/A 2.44 in N/A 3.75 in N/A 2.52 in N/A 12.50 Ton
M655A N/A Alloy Anchor Shackles N/A
13510
N/A 1.250 in N/A 1.13 in N/A 1.36 in N/A 1.84 in N/A 2.66 in N/A 4.02 in N/A 2.69 in N/A 15.00 Ton
M656A N/A Alloy Anchor Shackles N/A
13511
N/A 1.380 in N/A 1.25 in N/A 1.52 in N/A 2.03 in N/A 3.15 in N/A 4.63 in N/A 2.88 in N/A 18.00 Ton
M666A N/A Alloy Anchor Shackles N/A
13512
N/A 1.500 in N/A 1.38 in N/A 1.65 in N/A 2.25 in N/A 3.25 in N/A 5.19 in N/A 3.25 in N/A 21.00 Ton
M657A N/A Alloy Anchor Shackles N/A
13513
N/A 1.630 in N/A 1.50 in N/A 1.77 in N/A 2.41 in N/A 3.5 in N/A 5.63 in N/A 3.5 in N/A 25.00 Ton
Unit of Measure
1