Master Lock
Master Steel Lock has a laminated steel body, precision pin-tumbler mechanism and can be keyed alike. Sold in two sizes: #1 - 1.75" wide body and #3 - 1.5" wide body.
American Weather-Built
The American Weather-Built #30 has a 1.5" wide solid aluminum body, double steel ball locking mechanism and is available keyed alike.
Dolphin Lock
The Dolhin Lock #1600 has a 1.375" body, is made from corrosion resistant brass, and are keyed alike.