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.
Unit of Measure
Items
Wrench Chains

Wrench Chains

Wrench Chains

Wrench Chains
P - Pitch N/A 0.625 in N/A 0.750 in
Lacing  N/A 2x2
D N/A 0.200 in N/A 0.234 in
L N/A 0.559 in N/A 0.787 in
E N/A 0.114 in N/A 0.197 in
T N/A 0.080 in N/A 0.094 in
H 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