Arrow MK31
Dead locking latch bolt operated by knob from either
side. Turning key in either knob locks or unlocks its own
knob independently. Do not use on doors in rooms that
have no other entrance.
Arrow's MK Series offers security professionals simple solutions to accessibility requirements. The MK Series designs, architectural finish, and available function options make it ideal for commercial applications where heavy-duty Grade 1 hardware may not be necessary.
Features
Lock Chassis: Cold rolled steel with zinc dichromate finish for corrosion resistance. Requires standard 2-1/8" (53.97 mm) bore through door.
Backset: 2-3/8" (60.32 mm) standard. 2-3/4" (69.85 mm), 3-3/4" (95.25 mm) available.
Door Thickness: 1-3/8" (34.92 mm) to 1-3/4" (44.45 mm)
Latch: Brass with 1/2" (12.7 mm) throw. Latch housing is steel, with zinc dichromate finish for corrosion resistance. 7/8" (22.225 mm) bore in edge of door is required.
Latch Front: Brass or bronze. Standard faceplate for 2-3/8" (60.32 mm) backset measures 2-1/4" (57.15 mm) x 1" (25.40 mm), with a flat front, for 2-3/4" (69.85 mm) standard faceplate measures 2-1/4" (57.15 mm) x 1-1/8" (28.57 mm), with a beveled front 1/8" (3.17 mm) in 2" (50.8 mm).
Strike: Brass, bronze or stainless steel. Standard “T” strike measures 2-3/4" (69.85 mm) x 1-1/8" (28.57 mm). Optional ANSI A115.1 strike measures 4-7/8" (123.82 mm) x 1-1/4" (31.75 mm). All strikes have a 1-1/4" (31.75 mm) lip to center dimension.
Handing: Reversible.
Cylinder, Standard: Solid brass 6 pin cylinder with Arrow "A” keyway, keyed to 5 pin for stock. Supplied with two 5 pin brass keys for stock.
Cylinder Options: Interchangeable Core-lockset prepared for use with 6 or 7 pin interchangeable cores. Supplied less core, but packed with 6 and 7 pin tailpieces. Will accept cores as manufactured by Best,™ Falcon™ and other similar style cores. Suffix “IC” to design.
Finish: US3, US4, US5A, US10, US10B, US10BE, US15, US26, US26D.
Warranty: 1 year limited
Certification
- ANSI/BHMA A156.2, Series 4000, Grade 2
- Underwriters Laboratories (UL and CUL) listed for use on 3 hour, A label single swinging doors.
- Federal Specifications FF-H-106C, Series 160