Specification Sheet

3
2.5″ (64mm) Backset Mortise Locks
For Doors 1.375″ (35mm)/1.75″ (44mm) Thick and Over
2.5″ Backset Mortise Lock
Lock Specifications: Standardized heavy steel case is smooth, easy
to mortise, and assures snug and solid fit in door mortise. Vital
interior working parts are made of solid hot forged brass or steel
for a lifetime of trouble-free operation. Armored front provides
maximum strength and protection against tampering. Most lock
functions are completely reversible. The bevel of front is adjustable
from flat to standard bevel .125″ on 2″ (3mm on 51mm). Most
metal door and frame manufacturers have provided reinforcements
for Baldwin Mortise Locks.
Steel Case: .75″ × 3.5″ × 5.5″ (19 × 89 × 140mm)
Front*: Hot forged brass .218″ × 1.25″ × 8″ (6 × 32 ×
203mm). Adjustable for beveled conditions.
* Optional 1″ (25mm) front with .75″ (19mm) solid latch bolt
available for doors of 1.375″ (35mm) in thickness. Furnished
standard with a curved lip strike.
Scalp: Wrought brass and bronze, available in matching finishes.
Anti-Friction Latch Bolt: Hot forged brass
.5″ × 1″ (13 × 25mm) × .75″ (19mm) throw. Furnished in US4 and
26D finishes to match trim.
Dead Bolt: .5″ × 1.25″ (13 × 32mm) × 1″ (25mm) throw with two
saw-proof inserts. Furnished in US4 and 26D finishes to match
trim.
Hub Size: .29″ (7mm) with two-way rotation. Broached
on the diamond. (One-way rotation on LS functions.)
Backset: 2.5″ (64mm)
Spacing: center to center of:
Knob Hub to cylinder 3.437″ (87mm)
Knob Hub to turn knob 2.25″ (57mm)
Cylinder: Standard mortise type with 03 keyway and
two nickel silver keys. Lock furnished with product order. Parts
sold separately.
Keying: All levels of keying including construction keying
are available. Contact customer service for details.
Strike: Wrought brass and bronze finished to match. Supplied to
ANSI standard A115.1, 1.25″ (32mm) lip-to-center. Locks furnished
standard with straight lip strike (Universal) and dust box. Curved
lip and special length strikes available. All KEYED lock functions
are furnished standard with a high grade steel security strike and
two 3″ steel screws.
Template: Metal doors/frames to be prepared in accordance with
ANSI A115.1 or A115.11. Face cutouts are subject to variation.
always review trim requirements before door preparation.
Federal Specification: Conforms to Federal Specification
FF-H-106 Series 86/87 and to all Performance and Structural
Specifications of ANSI A156.13, Series 1000, Grade 1 and/or
Grade 3.