Corbin Russwin 438F90 Grade 1 - ML2000 Key Plate Packet

Corbin Russwin 438F90 ML2000 Series Cast Escutcheon Key Plate Packet for Mortise Locks

Precision-Fit Replacement Key Plate Packet for ML2000 and ML2000HS Mortise Lock Series

The Corbin Russwin 438F90 is a Cast "V" Escutcheon Key Plate Packet engineered specifically for use with the ML2000 and ML2000HS Mortise Lock Series. Designed as a standard component for privacy function with emergency release only, this sectional trim part features a key plate with a 1-3/8" (35mm) diameter plate size. Constructed from cast brass or bronze, this packet delivers the precision fit and durable material quality expected from Corbin Russwin commercial door hardware. Each packet includes one Key Plate and two #6 x 1/2" Oval Truss Head Screws for complete, ready-to-install convenience.

Professional Features & Benefits

• ANSI/BHMA Grade 1 mortise lock per A156.13 Series 1000, Operational and Security Grade 1
• UL Cycle above and beyond: 14.5 Million Cycles (Verification ID: V875753)
• Patented Quick Reversible latchbolt — reverse handing without disassembling the lock case
• Multi-function capability: 12 functions configurable from one ML2054 lockbody
• Heavy-gauge steel lockcase 5-7/8" x 4" x 15/16"; 1" stainless steel deadbolt, 1" throw
• 3/4" (19mm) throw anti-friction two-piece latchbolt requires less force to close
• Wide variety of trim designs including Muséo®, Vineyard™, Behavioral Health (BHSS/BLSS)
• Status indicator options for locked/unlocked visibility (sectional and escutcheon trim)
• Motorized Electric Latch Retraction (MELR) available for ML20900 series
• Thru-bolted trim designs for proper alignment and increased security
• Can be used with new or existing Corbin Russwin key systems; accepts most other manufacturers' cylinders
• UL/cUL listed, UL10C positive pressure; 3-hour fire door up to 4' x 10' single or 8' x 10' pair
• Ten-year mechanical warranty; five-year MELR; two-year electrical

Technical Specifications

• Grade: ANSI/BHMA A156.13 Series 1000, Operational and Security Grade 1
• Handing: Handed; quick reversible — re-handed without disassembling the lock case
• Door Thickness: 1-3/4" (44mm) standard; optional thicknesses available
• Backset: 2-3/4" (70mm)
• Lockcase: Heavy-gauge steel, 5-7/8" (149mm) x 4" (102mm) x 15/16" (24mm)
• Armored Front: Wrought brass, bronze, or stainless steel, 8" x 1-1/4"
• Latchbolt: 2-piece mechanical with anti-friction insert, 5/8" x 1" x 3/4" (19mm) throw
• Auxiliary Latchbolt: 9/16" (14mm) effective throw; deadlocking
• Deadbolt: One-piece stainless steel, 19/32" x 1-1/4" x 1" (25mm) throw
• Strike: Wrought brass, bronze, or stainless steel, ANSI straight lip, 4-7/8" x 1-1/4" x 1-1/8" lip to center
• Cylinder: Brass, 6-pin L4 keyway, 0-bitted standard
• Spacing: C. to c. knob/lever to cylinder: 3-5/8" (92mm); knob/lever to thumbturn: 2-7/16" (62mm)
• Certifications: ANSI/BHMA A156.13 Grade 1; UL/cUL UL10C 3-hour positive pressure; ADA A117.1; California State Fire Marshal; Windstorm/Hurricane certified
• Warranty: Ten-year mechanical; five-year MELR; two-year electrical

Professional Applications

• Commercial Office Buildings
• Healthcare Institutions
• Educational Facilities
• Retail Establishments
• Government and Municipal Buildings
• Multi-Tenant Residential Properties
• Industrial and Warehouse Facilities

Why Choose Corbin Russwin Quality?

Corbin Russwin door hardware parts and accessories are manufactured to exacting commercial standards, with this key plate packet crafted from cast brass or bronze to ensure lasting performance and precise fitment within the ML2000 and ML2000HS Mortise Lock Series. As a commercial-grade component classified under Mechanical Locks, it is engineered to meet the demands of high-use environments where reliable, properly fitted hardware is essential. Trust Corbin Russwin to deliver the quality and compatibility required for professional door hardware installations.