Hager 3901 Rim Cylinder — Grade 1 Conventional Fixed Cylinder in US10B Oil Rubbed Bronze

The Hager 3901 Rim Cylinder is a commercial Grade 1 pin-tumbler rim cylinder designed for rim exit devices and rim-mounted locking hardware on high-traffic commercial and institutional openings. This listing is finished in US10B Oil Rubbed Bronze — an antique bronze oiled architectural finish (BHMA 613) that coordinates naturally with matching oil-rubbed bronze trim, exit devices, and hinges throughout a complete door hardware package. Schools, healthcare facilities, retail centers, and corporate campuses regularly specify this finish for decorative-yet-durable interior environments.

The 3901 ships as a conventional fixed (non-IC) cylinder, meaning the core is not field-removable — ideal for openings that do not require an interchangeable core keying program. Large-format interchangeable core (LFIC) and small-format interchangeable core (SFIC) variants are cataloged separately.

Rim Cylinder Function — What It Does

A rim cylinder mounts through the door stile and drives the actuating tailpiece on a rim exit device or other rim-mounted locking hardware. When the correct key is turned, the cylinder rotates the tailpiece to retract or engage the device latch, providing keyed control of the opening from the exterior. The 3901 uses conventional fixed-core pin-tumbler construction for straightforward installation and reliable everyday operation.

Key Features & Benefits

• ANSI/BHMA Grade 1 Commercial Duty: Heavy-duty cylinder rated for demanding, high-cycle service in commercial and institutional openings.
• Pin-Tumbler Security: Conventional pin-tumbler keyway delivers dependable key control and pick resistance for everyday commercial security applications.
• US10B Oil Rubbed Bronze Finish (BHMA 613): Antique bronze oiled finish stands up to heavy handling and coordinates with oil-rubbed bronze trim, exit devices, and hinges throughout a hardware set. Per Hager finish documentation, US10B is warranted over brass-base material — confirm base material at time of order for warranty-critical applications.
• Conventional Fixed Cylinder: Standard non-interchangeable-core construction for openings that do not require field-removable cores — straightforward to install and service.
• Keyed Random (KR): Furnished keyed random with keys, ready for immediate field installation or integration into an existing master key program.
• Direct Replacement for Hager Rim Hardware: Purpose-built to work with Hager rim exit hardware — a clean, exact-fit swap for replacement and maintenance work.
• Multiple Finish Options Available: The 3901 is also offered in US26D Satin Chrome, US32D Satin Stainless Steel, US3 Polished Brass, and US4 Satin Brass to match any hardware schedule finish requirement.
• IC Variants Available Separately: SCC ( C keyway), SFIC, and LFIC cylinder options are cataloged separately for facilities requiring interchangeable core keying systems.

Technical Details