Our production locks are made by one of two companies. A.E. Squires is in England and produces all the locks we have that are for wood 3/4" or thicker. These are high quality locks and are quite reliable. Viola, a Spanish firm, manufactures our tiny full mortise box lock--suitable for woods up to 1/2" thick.
Reasonable prices, substantial quantity discounts, and no minimum order size give you the flexibility you need.
Horton Brasses Inc., 49 Nooks Hill Road, Cromwell CT 06416, 800-754-9127