The Falcon 008876-002 is the OEM Blocking Ring, 3/8 inch, documented in the Falcon Keys, Keying Systems and Cylinders Catalog as the AR cam cylinder collar for the 985 Series and related 1-1/8 inch mortise lock cylinders. Specific cylinder series covered include the 250, 965, 966, 973, 974, and 985. A wave washer is included with each 008876-002 collar per the official Falcon cylinders catalog. Finish must be specified at time of order. The 008876-002 appears under both the Cylinder Collars and Cylinders and Strikes diagram sections for all 23 keyed functions in the Falcon MA Series. In stock.

Why the 008876-002 Is the Most Common Blocking Ring in MA Series Service

The Falcon 985 is the standard mortise cylinder used in MA Series locks. From the official Falcon MA Series catalog: "Our standard cylinder, 985, is 1-1/8 inch long. The factory will furnish the correct cam(s) and cylinder guard for the function and door thickness specified." Because the 985 is the factory-default cylinder shipped with every standard MA Series lock order, the 008876-002 is the blocking ring most frequently encountered in service, replacement, and retrofit situations across all MA Series functions.

When a 985 Series cylinder is ordered with an AR cam for use in an Adams Rite-compatible or aluminum storefront door application, the 008876-002 (3/8 inch) is the correct collar per the official Falcon collar selection table. The 3/8 inch thickness provides the correct spacing between the cylinder body flange and the trim escutcheon face for the 985 cylinder AR cam configuration in standard door thickness applications. Using the wrong collar thickness at this position causes the cylinder face to sit either too far proud of or too far recessed behind the trim, which affects both the appearance and the mechanical engagement between the cylinder and the cam.

Falcon Blocking Ring Family: 008876-002 Position in the 3/8 Inch Size

The 008876 blocking ring family covers six thicknesses in the AR cam collar range. Each thickness corresponds to a specific cylinder length and application within the Falcon mortise cylinder catalog. The complete family from the official Falcon Cylinders catalog is as follows:

008876-000 (1/8 inch): AR cam collar for C260 Series and longer (C)988, (C)990, and (C)992 cylinders.

008876-002 (3/8 inch, this product): AR cam collar for the 985 Series and related 1-1/8 inch cylinders including 250, 965, 966, 973, and 974.

008876-003 (1/2 inch): AR cam collar for the 986 Series 1-1/4 inch cylinders.

008876-004 (5/8 inch): AR cam collar for the 987, C987, and C997 Series 1-3/8 inch cylinders.

Selecting the correct blocking ring requires knowing the cylinder series installed in the lock. The 008876-002 applies only when a 985 Series or equivalent 1-1/8 inch cylinder is in use with an AR cam. Installing a 3/8 inch collar with a longer cylinder body will result in incorrect cylinder projection and possible cam misalignment with the lock chassis.

Falcon MA Series Mortise Lock Parts: MA Series Function Coverage

The 008876-002 blocking ring is confirmed in the parts diagrams for all 23 keyed Falcon MA Series functions: MA161 (Connecting Room), MA311 (Privacy), MA371 (Store Door), MA381 (Apartment Exit), MA411 (Asylum), MA431 and MA441 (Classroom Security), MA451 (Hotel Guest), MA521 and MA541 (Entry/Office), MA531 and MA621 (Apartment Corridor), MA551 (Holdback), MA561 (Classroom), MA571 and MA641 (Dormitory), MA581 (Storeroom), MA851 (Electrified Fail Safe), MA881 (Electrified Fail Secure), MA911 (Classroom Dead Lock), and MA921, MA931, and MA941 (Dead Lock variants). All 23 functions share the same blocking ring part number when the 985 Series AR cam cylinder is installed.

Seven finishes are available for the 008876-002: 605 (Bright Brass), 606 (Satin Brass), 613 (Oil Rubbed Bronze), 619 (Satin Nickel), 622 (Powder-Coated Matte Black), 625 (Bright Chrome), and 626 (Satin Chrome). Specify part number and finish when ordering to ensure the ring matches the installed hardware.

SecurityParts stocks OEM Falcon MA Series mortise lock cylinder collars and mortise lock parts. Free shipping on orders over $300.