PDQ KM137 Double Cylinder, Commercial Grade Heavy Duty Rim Cylinder Deadbolt

The PDQ KM137 is a double cylinder rim cylinder deadbolt in the Store Door function (ANSI E1141). Double cylinder means key-required from both sides - outside and inside. One-inch throw brass bolt with a 1/4-inch case-hardened steel roll pin embedded in the bolt face. UL 10C listed for positive pressure fire assemblies up to 3 hours. Mounts surface-applied on the door face, no deep door prep required beyond a standard 2-1/8-inch bore hole.

What "Rim Cylinder" Means

A rim cylinder is a specific cylinder format where the cylinder body mounts through a hole in the door face from the outside, and the tail bar (the projecting pin behind the cylinder) drives the lock mechanism from the inside. The lock body itself mounts on the interior door surface - on the "rim" of the door. This is different from a key-in-lever cylinder (which sits inside a lever lock body) and from a mortise cylinder (which threads into a mortise lock escutcheon).

Rim cylinder deadbolts work on thinner door materials, screen doors and storm doors, aluminum storefront doors, and communication doors between hotel rooms - any application where a surface-mounted lock body is practical and a standard cylindrical deadbolt's through-door prep is not. The KM137 handles door thickness from 1-3/8 to 1-3/4 inches with conventional cylinders and 1-1/2 to 2 inches with SFIC cores.

For all commercial deadbolts, browse our cylindrical deadbolts catalog.

Double Cylinder: What It Means and When It's Specified

Double cylinder locks require a key from both the outside and the inside. There's no thumbturn on the inside of the door. Both sides require a key to retract the bolt.

This is specified on glass storefront doors and retail entrance doors where the glass panel adjacent to the deadbolt presents a security risk - someone who breaks the glass can't reach in and turn a thumbturn to unlock the door. With a double cylinder, breaking the glass gets them no further because the inside also requires a key.

It's also specified on communication doors between adjoining hotel rooms, storeroom-to-storeroom doors, and auxiliary entrance locks where both sides of the door need credential control. The "Store Door" ANSI function code (E1141) reflects this commercial application history.

Before specifying any double cylinder lock, confirm local fire codes for the opening. Most jurisdictions prohibit double cylinder locks on egress doors unless specific conditions are met, because occupants must have a key to exit during an emergency. The KM137 carries a UL10C positive pressure fire listing for use in fire-rated assemblies up to 3 hours, but the egress code question is separate from the fire listing - confirm with the Authority Having Jurisdiction.

Bolt Construction: 1" Throw with Case-Hardened Steel Roll Pin

The 1-inch throw puts the bolt a full inch into the strike when locked - more engagement depth than a standard 5/8-inch throw deadbolt. The 1/4-inch case-hardened steel roll pin embedded in the brass bolt face resists bolt cutting. A standard hacksaw blade or bolt cutter that shears through soft brass hits the hardened steel pin and stops. This is why the KM137 is used in commercial, institutional, government, and military applications where bolt integrity under attack matters.

The bolt is non-handed. The KM137 installs on left-hand and right-hand doors without modification.

KM Series Hierarchy: KM137 vs KM116 vs KV137

The KM137 is the double cylinder version - key both sides, Store Door function. The KM116 is the single cylinder version - key outside, thumbturn inside, standard entry function. Both are Grade 2 Heavy Duty in the KM Series.

The KV137 is the double cylinder Commercial Duty Rim Cylinder Deadbolt - lighter duty than the KM137, for applications where the KM's heavy duty specification exceeds the requirement. For government, institutional, and commercial applications with meaningful security requirements, the KM137 is the correct choice between the two.

PDQ KM137 Specifications

• SKU: KM137

• Also known as: PDQ KM137, KM137 PDQ, PDQKM137, km137 pdq, km137 rim cylinder deadbolt, double cylinder rim deadbolt pdq, pdq km series 137, rim cylinder deadbolt double cylinder store door, deadbolt lock screen door commercial, double cylinder gate type shear deadbolt

• Series: PDQ KM Series, Grade 2 Heavy Duty Rim Cylinder Deadbolt

• Function: Double Cylinder, Store Door; key required from both sides, ANSI E1141

• Deadbolt: 1" throw; brass bolt with 1/4" case-hardened steel roll pin; non-handed

• Cylinder type: 6-pin brass RIM cylinder keyed to 5-pins

• Door thickness: 1-3/8" to 1-3/4" (conventional); 1-1/2" to 2" (SFIC)

• Door prep: 2-1/8" bore hole

• Backset: 2-3/4" (UL Listed); adjustable 2-3/4" to 2-3/8" with 2-1/4" x 1" faceplate (not UL Listed)

• Front: 2-1/4" x 1-1/8"; stainless steel or wrought brass

• Strike: 2-3/4" x 1-1/8"; stainless steel or wrought brass

• IC: SFIC compatible; 6 or 7-pin; Best, Falcon, Arrow

• Keyway: SCC (Schlage C) standard; 12 additional keyways available

• Finishes: 605 (Bright Brass), 606 (Satin Brass), 613 (Oil Rubbed Bronze), 626 (Satin Chrome), 630 (Satin Stainless Steel)

• UL: ANSI/UL 10C Positive Pressure Fire, up to 3 hours

• ADA: Compliant, ICC/ANSI 117.1

• Grade: Grade comparable with GP and SD Series Grade 2 cylindrical locks

• Warranty: 1-year limited

• Applications: Storefront glass doors, communication doors, storerooms, auxiliary entrances, screen doors, aluminum doors, hotel room pairs, government and military entries

• Resources: PDQ KM Series catalog at pdqlocks.com linked in Resources section