Progressive Hardware Co., Inc. PMC3 1-1/8" Mortise Cylinder Lock Polished Brass Segal Keyway

Solid Brass Mortise Cylinder

This Progressive Hardware mortise cylinder is a solid brass replacement unit with a 1-1/8 inch body and a polished brass US3 finish. It operates on a five-pin tumbler mechanism using the SE1 Segal keyway and is supplied with a standard cam. The cylinder is sold keyed different and is designed to fit most mortise lock bodies on the market.

Suited For Standard Mortise Replacements

Homeowners and maintenance staff replacing a worn cylinder on an existing mortise lock will find this unit matches the common 1-1/8 inch length and Segal keyway. It is not for doors requiring a different cylinder length, a specific keyed-alike configuration, or a keyway other than SE1 Segal. Buyers needing a high-security sidebar mechanism or a six-pin tumbler should look elsewhere.

1-1/8 Inch Cylinder Length

The 1-1/8 inch measurement is the critical dimension that determines whether this cylinder will sit flush with the door face and engage the lock mechanism correctly. Verify the existing cylinder length before ordering, as other sizes are available for thicker or thinner doors. An incorrect length prevents proper operation even if the keyway and cam match.