The Von Duprin 47716415 is the OEM standard screw package for the -2 and -2SI double cylinder configurations on 98/99 Series exit devices. The double cylinder module requires its own fastener set separate from the standard device mounting hardware because it introduces an additional push-side cylinder assembly onto the inside face of the door. The 47716415 provides the correct screw package for that specific module on standard door applications across all four 98/99 Series device types.

What the Von Duprin -2 and -2SI Exit Device Configurations Are

The standard Von Duprin 98/99 exit device allows anyone on the push side to operate the push bar freely for egress at all times. The -2 double cylinder option changes this by adding a key cylinder to the inside of the device. With the -2 configuration installed, the inside cylinder must be turned to allow the push bar to retract the latch. This gives facilities the ability to control access from the inside as well as the outside, making it the right choice for storage rooms, server rooms, controlled pharmaceutical areas, and any opening where restricting interior egress is necessary for security purposes.

The -2SI adds a security indicator to the double cylinder configuration. In addition to the inside keyed control, the -2SI provides a visual indicator on the outside of the door showing whether the inside cylinder has been engaged. This is common in behavioral health facilities, interview rooms, and institutional settings where staff need visible confirmation of whether a space is occupied and secured.

Both -2 and -2SI configurations make the rim exit device handed, which is one of the exceptions to the standard non-handed 98/99 rim mounting. Handing must be specified when ordering -2 or -2SI configured devices.

Von Duprin NL Drive Screw and Double Cylinder Installations

Technicians installing or servicing -2 and -2SI configurations will encounter the NL drive screw (090074) referenced in Von Duprin's 98/99 Series rim exit device installation instructions. The instructions specify that the NL drive screw must NOT be removed for 98/99-2 double cylinder device installations, including TP-2, L-2, and K-2 trim configurations. Keeping the NL drive screw in place ensures the outside cylinder functions correctly as a night latch, meaning the outside key retracts the latch bolt rather than enabling full dogging operation. The 47716415 screw package covers the fasteners specific to the double cylinder module itself, which is a separate requirement from the NL drive screw that lives in the center case.

Von Duprin 2SI Parts Compatibility Across Device Types

The 47716415 standard screw package is confirmed compatible with seven Von Duprin 98/99 Series device configurations across all mounting types. For rim devices, it covers the 98/99 rim in the 98/99-2 double cylinder configuration. For surface vertical rod, it covers both the 98/9927 SVR and the fire-rated 98/9927-F SVR in -2 configuration. For concealed vertical rods, it covers the 98/9947 CVR and fire-rated 98/9947-F CVR in -2 configuration. For concealed vertical cable, it covers the 98/9949 CVC and fire-rated 98/9949-F CVC in -2 configuration.

This covers the full range of panic and fire exit hardware in the 98/99 family where a double cylinder option has been specified, making the 47716415 the single correct screw package across all standard -2 and -2SI applications in this series. For retrofit installations converting an existing 98/99 device to -2 or -2SI function, confirm whether the "standard" screw package is appropriate for the door thickness before ordering.

For all Von Duprin 98/99 Series parts, fasteners, center case assemblies, and electrified accessories, SecurityParts stocks the complete OEM catalog with free shipping on orders over $450.