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D-Series Cylindrical Locks, Knob Designs

D-Series Cylindrical Locks, Knob Designs,Extra Heavy Duty Commercial Cylindrical Locks

When the highest quality mechanisms are required, commercial quality D-Series locks are your best choice. Precision manufactured to exact tolerances, this top-of-the-line series is best suited for commercial, institutional and industrial use. You can choose from a broad range of knob designs, in a dozen standard finishes.

Latches & Strikes Adjustable brass or bronze latch faceplates and strikes, furnished in compatible lock trim finishes.

Latches: 1 1/8″x 2 ¼” (29 mm x 57 mm), ½” (13 mm) throw standard, a ¾” (19mm) throw, fire door latch is available.

Strikes: ANSI 1 ¼” x 4 7/8″ (32 mm x 124 mm), 1 3/16″ (30 mm) lip standard. Optional 1 3/8″ (35 mm) lip available. Optional square corner T-strike 1 1/8″ x 2 ¾” (30 mm x 70 mm) with 1 1/8″ – 1 ½” (29 mm – 34 mm) lip available.

Standard Features

– Cylindrical lock housing. Cold rolled steel, corrosion treated for normal atmospheric conditions
– Key removable outside knobs for easy cylinder replacement
– Solid brass 6-pin cylinders
– No exposed mounting screws
– Exceeds 800,000 cycle ANSI Grade 1 requirements

Electrified Locks

D-Series locks are available for electrically locking and unlocking controls for high security and fire safety applications. They are UL Listed and rated for both fire and electrical single point locking on labeled doors. Refer to the lock function pages for functions and design availability.