Arrow Lock AM20-LB Mortise Entrance Lock

Arrow Lock AM20-LB Mortise Lock - Entrance is meticulously engineered for strength and reliability, making it an ideal choice for high-traffic environments such as schools, hospitals, and commercial buildings. Designed for heavy-duty use, this lock provides exceptional security and durability, while also ensuring low maintenance over time. The AM20-LB features a heavy gauge steel lockcase with a zinc dichromate finish for enhanced corrosion resistance, measuring 5-7/8" x 4" x 15/16". With a standard door thickness of 1-3/4", a backset of 2-3/4", and an armored front that accommodates both flat and beveled doors, this lock is versatile for various installations. Handed and field-reversible, the AM20-LB allows for easy re-handing without disassembly, ensuring a smooth installation process. The stainless steel latchbolt and one-piece deadbolt enhance security, while the option for master keying and interchangeable cores provides flexible key control solutions. Accompanied by a five-year limited warranty, the Arrow AM20-LB Mortise Lock offers a broad spectrum of designs and functions, including lever handles and knobs in architectural finishes. Experience peace of mind with a lock that meets the highest standards of performance and safety.

Mortise Lock - Entrance

Faceplate, AM/BM20,

Faceplate, AM/BM20,

The AM Series is engineered for strength and performance, and manufactured to exacting standards.

The Arrow AM Series mortise locks are intended for heavy duty use in schools, hospitals and commercial buildings where security, durability and low maintenance are required.

• Handing – Handed; field reversible. The lockset can be re-handed without disassembling the lock case.
• Door Thickness – 1-3/4" (4mm) standard.
• Backset – 2-3/4" (70mm).
• Lockcase – Heavy gauge steel, with zinc dichromate finish for corrosion resistance. 5-7/8" (149mm) x 4" (102mm) x 15/16" (24mm).
• Armored Front – Heavy gauge steel, 8" (203 mm) x 1-1/4" (32mm) x 3/32" (2mm). Accommodates flat doors and doors beveled 1/8" (3mm) in 2" (51mm).
• Faceplate – Wrought brass, bronze or stainless steel. Attached by machine screws to lockcase front.
• Latchbolt – Stainless steel, 2 piece mechanical with anti-friction insert. 5/8" (16mm) x 1" (25mm) x 3/4" (19mm) throw.
• Auxiliary Latchbolt – 9/16" (14mm) effective throw and 3/8" (10mm) effective auxiliary latch deadlocking.
• Deadbolt – One-piece stainless steel, 19/32" (15mm) x 1 1/4" (32mm) x 1" (25mm) throw.
• Hub – Knob: nickel steel, 5/16" (8mm) and 9/32". Lever: nickel steel, 5/16" (8mm).
• Spacing – Center to center, hub to cylinder: 3-5/8" (92mm). Center to center, hub to turnpiece 2-7/16" (62 mm). 
• Strike – Wrought brass, bronze or stainless steel. ANSI straight lip standard, 4-7/8" (124mm) x 1-1/4" (32mm) 1-1/8" (29mm) lip to center. Optional strikes, lip lengths and ANSI wrought strike box available. Keys – Two nickel silver standard. Keying Features Available: • Master keying • Construction master keying • Visual key control • Concealed key control • Interchangeable core (IC) - Pointe, Choice Base, Plus, and Flex
• Warranty – Five-year limited.
• Standardized Case – One size case for uniform mortising.
• Reversibility – Locks are easily reversed for change of hand.
• Self Aligning Trim – Standard with rose trim. Eliminates bind, facilitates installation, gives support and saves labor.
• Designs – Broad spectrum of designs including lever handles, knobs for roses and escutcheons in architectural finishes.
• Complete Range of Functions – To meet all requirements.

Resources

• AM Series / BM Series Cut Sheet
• AM Series Mortise Locks Cut Sheet
• AM/BM Series Mortise Lock Catalog