Accentra (Yale) 197F-1/4 Series Jimmy-proof Deadlock, w/Flat Strike

The Accentra (Yale) 197F-1/4 is a jimmy-proof deadlock with a flat strike for outswinging doors, also referenced as the Yale 197F or 197f. The outside is furnished with a 5-pin rim cylinder (Yale 1109E). The inside uses a fixed 3-pin brass cylinder with no alternatives, requiring a key to operate the deadbolt from the interior. The case is zinc alloy in sprayed brass finish with a 2-3/8-inch backset. Door thickness compatibility is 1-1/4 inches to 2-1/4 inches. Two keys (RB8) are included. SKU: 197F-1/4.

What the flat strike means and why outswinging doors need a different jimmy-proof deadlock

The standard jimmy-proof deadlock is designed for inswinging doors, where the door frame sits flush with the exterior door face and the interlocking staple strike can be mounted in the normal position relative to the door edge. On outswinging doors, the frame geometry is reversed: the door swings away from the interior and the strike mounting position changes. The flat strike on the 197F-1/4 accommodates this geometry, allowing the vertical bolts to engage the strike correctly on a door that swings outward.

Outswinging doors are common on exterior entries where wind loading or building code requires the door to open outward, on commercial storefronts, on some apartment entry doors, and on exterior doors where inswinging operation would create a clearance problem with interior floor transitions, thresholds, or adjacent construction. Using the inswing 197-1/4 with its standard interlocking strike on an outswinging door will result in an improper fit between the bolt and strike geometry. The 197F-1/4 is the correct specification for outswinging applications. For the inswinging door version with the standard interlocking strike, the Accentra Yale 197-1/4 Series jimmy-proof deadlock is stocked.

Double cylinder configuration on the 197F-1/4: key outside and key inside

The 197F-1/4 is a double cylinder deadlock. The exterior uses a Yale 1109E 5-pin rim cylinder operated by key. The interior uses a fixed 3-pin brass cylinder also operated by key, with no thumbturn and no alternatives available for substitution. Operating the deadbolt from either side of the door requires a key.

On outswinging doors, the double cylinder configuration is often the correct specification because outswinging doors typically have the cylinder positioned on the exterior face where the door opens away from a potential attacker, and a thumbturn on the interior is generally less of a vulnerability concern than on an inswinging glass-panel door. Confirm applicable fire and building codes for the installation location before ordering, as some codes restrict double cylinder configurations on certain egress paths. For key cylinders and key blanks compatible with the Yale 1109E, the cylinders, cores, and keys section covers the available options.

How the 197F-1/4 relates to the other models in the Yale 197 jimmy-proof deadlock series

The Yale 197 Series covers four configurations across two door swing types and two interior operating modes. The 197 has a thumbturn inside for inswinging doors. The 197-1/4 has a key cylinder inside for inswinging doors. The 197F has a thumbturn inside for outswinging doors with a flat strike. The 197F-1/4 has a key cylinder inside for outswinging doors with a flat strike. The "F" suffix identifies the outswinging flat strike configuration. The "-1/4" suffix identifies the double-cylinder (key inside) configuration.

The 197F-1/4 is the outswinging, double-cylinder version. For the outswinging thumbturn version in the same 197F flat strike configuration, confirm the model designation before ordering. For the inswinging thumbturn version of this deadlock, the Accentra Yale 197 Series jimmy-proof deadlock is stocked. For the full range of auxiliary deadbolts, the auxiliary deadbolts section is available. For the full commercial lock range, browse the commercial locks catalog.

Confirm the door swings outward before ordering the 197F-1/4. Sprayed brass finish only. Two keys included.