Share this page on

Mortise Lock Manufacturers and Suppliers

IQS Directory is a top industrial directory listing of leading industrial mortise lock manufacturers and suppliers. Access our comprehensive index to review and source mortise lock manufacturers with preview ads and detailed product descriptions. These mortise lock companies can design, engineer and manufacture mortise locks to your specifications and application need. A quick and easy to use request for quote form is provided for you to contact these mortise lock manufacturers and suppliers. Each company has detailed profile information, locations, phone number, website links, product videos and product information defined. Read customer reviews and product specific news articles. We are the right resource for your information requirement whether its for a manufacturer of antique mortise locks, mortise lock cylinders, mortise lock instillation.

Related Categories

Sierra constantly strives to improve the quality of its products and has a reputation for using the best materials, employing the most skilled engineers & producing the longest-lasting mortise locks. Hi-tech manufacturing processes facilitate competitive pricing & Sierra is rarely undersold, despite maintaining a commitment to top quality products that other companies are not able to meet.
Read Reviews
At Essentra Components has over 15 years of experience in the industry. At Essentra we pride ourselves on being the leading international supplier of specialty plastic, foam, porous technologies, and much more. Contact us today!
Read Reviews
Penn Lock Corp. is a leading fabricator of excellent mortise locks you can trust in. For over 40 years, we have maintained 5 lines of products, each with its own specific level of safeguard. We also offer a wide range of hardware locks including mortise and rim cylinders, as well as lever and tubular handles for fitting rooms, stock rooms and offices.
Read Reviews
Crest Lock Co. is a leading fabricator of mortise locks in addition to other related products in a wide variety of sizes, components & finishes for wood, metal, plastic or glass. Our lock manufacturing capabilities include 3-slot and key locks, pad locks that are keyed solid brass, long shackle solid brass padlocks, combination locks & key locks. Quality locks since 1925! For your convenience Industrial now offers online shopping. Please browse their website for more info!
Read Reviews
Northeast Lock Corp. provides innovative turnkey product & multi-product sourcing solutions that deliver quality & cost savings, all with a superior level of customer service. Our mortise locks are the best, due to the full time staff of engineers who can work with your engineers and manufacturing team to produce technical drawings, prototypes & CAD/CAM designs. Please call us today.
Read Reviews
More Mortise Lock Companies More Mortise Lock Companies GO TO TOP
Industry Information

Mortise Lock


Mortise locks are a common and secure method of locking doors and furniture. They are older, and were used before cylinder locks, which gained favor in the 1940s. Mortise locks are common in older commercial and residential buildings, as well as newer buildings with higher property value, since these locks are more expensive and secure than cylinder locks.

Mortise locks are often seen in hotels, office buildings and homes of the upper class. Although they are costly, their prestige adds value to a building because they provide superior security over other types of door locks. Installing mortise locks is difficult, and takes a degree of woodworking skill and much precise measuring. A portion of the door must be carved out to fit the large rectangular body of the locking system. This component houses the locking component, including the handle/lever/doorknob and deadbolt, a thick, solid piece of metal. A metal plate is also installed into the door frame and aligned with the lock body. The turn of a key or lever prompts the bolt, usually made of steel, to slide into the opening in the door frame when it is turned.


All mortise locks are composed of four basic parts: the lock body, the lock trim, a strike plate and the keyed cylinder. The lock body is the part that is installed into the door frame. The lock trim is the knob/handle that is used to open the door. A strike plate is that which lines the hole in the frame where the deadbolt fits. And the keyed cylinder operates the locking and unlocking function of the lock body. These components are usually made of metals such as brass, nickel, copper or steel grades. For aesthetics, they are often engraved with detail, polished or plated and come in many different finishes to match the décor of the building. A mortise lock is stronger and more secure than a cylinder lock for a couple of reasons. First, the lock mechanism is covered on both sides, and only a lever or key on the inside can cause the deadbolt to slide back inside the door component. In addition, the bolt is much longer and thicker. Because mortise locks are so difficult to install and repair, only an experienced locksmith should work on them. If the latch has weak tension, the pins and springs are probably worn out and should be replaced by a professional.

GO TO TOP