Von Duprin 050526 Cylinder Locking Nut Package

Product Description

The VON DUPRIN 050526 is a cylinder locking nut package designed for use in commercial door hardware and exit device assemblies. This small but critical hardware component secures the cylinder in place within the lockset or exit device, preventing loosening under repeated use. At 0.02 pounds and a profile of 5 inches by 3 inches by 0.25 inches, it is a compact replacement part intended for locksmiths, door hardware technicians, and facility maintenance professionals working on Von Duprin exit device and access control installations. Previously sold under part number 971974, this package contains the hardware needed to complete a proper cylinder installation.

This cylinder locking nut package is suited for commercial and institutional door hardware applications where Von Duprin exit devices and cylindrical locksets are installed. It is a direct replacement for worn, stripped, or missing locking nuts encountered during routine service or hardware upgrades. Facilities managers and door hardware service technicians will find this part useful when servicing entry points in schools, hospitals, government buildings, and other high-traffic commercial environments.

Key Features

• Replaces obsolete Von Duprin part number 971974
• Compact form factor at 5 inches by 3 inches by 0.25 inches for easy storage and handling
• Lightweight at 0.02 pounds — minimizes added hardware weight on door assemblies
• Sold as a single package unit for targeted replacement needs
• Designed for use in commercial-grade exit device and cylinder assemblies

Compatibility

Designed as an OEM-style replacement cylinder locking nut for Von Duprin exit device and door hardware assemblies. Previously cataloged under Von Duprin part number 971974.

Installation Notes

Installation of cylinder locking nuts is typically performed by licensed locksmiths or qualified door hardware technicians. Disengage any electronic access control power and ensure the door is secured in an open position before beginning cylinder service. Standard hand tools are sufficient for most cylinder locking nut replacements. Follow applicable building and life-safety codes, including NFPA 101, when servicing exit device hardware on fire-rated or egress doors.