Blaine Window Hardware, Inc.: Manufacturing and distributing obsolete, hard-to-find and current hardware parts since 1954.
Cal-Royal Products Inc.: Door hardware, locksets, door closers, and dead bolts for both home and business
Centor: Makers of external bifold hardware, keyed flush-mounting dropbolts, sliding door tracks
D&D Builders Hardware Co.: Manufactures and exports door and window hardware. Located in Taiwan. OEM/ODM business is welcome.
Door Scope Security: Door peep product.
Gaurav International: Manufacturer of brass builder's hardware, bathroom and door fittings, cabinet and furniture accessories.
Nora-M Co: Manufacturers and wholesale representatives at the hardware market. Mortise locks, carpet bands, knob and leversets, cylindres, door hinges, padlocks and window and door accessories.
Preferred Engineering Ltd.: Engineers fenestration hardware systems for the window manufacturing market.
Pullman Manufacturing Window Division: Offers products for both industrial and historical applications.
Sash Weights: Manufactures lead sash weights and supplies.
Swisco Inc.: Hard to find, discontinued, and obsolete window and door parts. Offers an online catalog with product specifications, various instructional guides, and a window and door glossary.
Titon Hardware Limited: Offers trickle ventilators and window fittings for domestic and commercial applications. Site includes news, contact information, and product information.
Vogo Incorporated: Manufactures locks for vinyl casement windows. Includes product information and contact details.