U.S. Tsubaki Wrench chains have extra long pins extending beyond both sides of the chain. They serve as tension linkages for holding pipes securely in pipe wrenches.
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Unit of Measure
Items
Wrench Chains

Wrench Chains
Wrench Chains

Wrench Chains
Chain Pitch_SYN N/A 0.625 in N/A 0.750 in
Lacing  N/A 2x2
Pin Diameter_SYN N/A 0.200 in N/A 0.234 in
Pin Overall Length_SYN N/A 0.559 in N/A 0.787 in
E N/A 0.114 in N/A 0.197 in
Link Plate Thickness_SYN N/A 0.080 in N/A 0.094 in
Link Plate Height_SYN N/A 0.512 in N/A 0.614 in
A - Width Over Link Plate N/A 0.331 in N/A 0.394 in
Average Tensile Strength N/A 6750 lb N/A 9000 lb