Padlocks have always been a substantial segment in the security hardware business. In the past, the small size and design often meant that your keying choices were limited. However, that is no longer true today.
Years ago, padlocks weren’t rekeyable and weren’t serviceable. They could be ordered keyed-alike or keyed-different. If you needed long shackles, you had to order the locks that way. If you wanted brass shackles, you had to place another order.

Padlock manufacturers have realized the huge field of potential to recover lost sales by offering special products and services to the locksmith.
The two biggest features are the ability to match keying to house and/or office keys and stamping or engraving padlock bodies to promote your company or to allow your customer to promote his. Padlock identification to controls key system information for the user.

Following is an overview of padlock companies and their products.