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Von Duprin 103866 55 Series Special Hex Key for Exit Device Maintenance
Genuine Replacement Tool for 55 Series Exit Device Servicing
The Von Duprin 103866 Special Hex Key is a genuine manufacturer replacement part designed specifically for use with the Von Duprin 55 Series exit device product line. Engineered to meet the precise tolerances required for proper servicing and adjustment of 55 Series exit devices and trim, this specialty tool ensures technicians and installers have the correct instrument for professional-grade maintenance. As a Grade 1 commercial-rated accessory within the Von Duprin Exit Devices and Trim product group, this hex key is an essential component for any facility maintenance program or door hardware professional working with 55 Series hardware.
Professional Features & Benefits
- Series-Specific Design: Engineered exclusively for Von Duprin 55 Series exit devices and trim, ensuring a precise fit and proper engagement during servicing and adjustment procedures.
- Grade 1 Commercial Quality: Rated Grade 1 for commercial applications, reflecting the durability and precision manufacturing standards expected in demanding professional environments.
- Genuine OEM Replacement Part: Sourced directly as an authorized Von Duprin replacement part, guaranteeing compatibility and performance consistent with original equipment specifications.
- Essential Maintenance Tool: Provides the correct tool geometry required for 55 Series exit device hardware, preventing damage to fasteners and components during installation or service calls.
- Commercial-Grade Application: Designated for commercial use, making it appropriate for facility maintenance teams, door hardware contractors, and security professionals servicing high-traffic exit device installations.
- Exit Devices Parts Category: Classified under Exit Devices Parts within the Von Duprin product line, ensuring straightforward identification and reordering for parts inventory management.
Technical Specifications
- Product Group: Exit Devices and Trim
- Series: 55 Series
- Grade: Grade 1
- Product Subgroup: Parts and Accessories
- Subcategory: Parts and Accessories
- Product Type: Exit Devices Parts
- Commercial/Residential: Commercial
- Parts and Accessories Type: Replacement Parts
- Product Attribute: Parts and Accessories
- Fire Rating: No
- Product Category: Exit Devices and Trim
- Department: Door Hardware
Professional Applications
- Commercial Office Building Maintenance Programs
- Educational Facility Door Hardware Servicing
- Healthcare Institution Exit Device Maintenance
- Retail Establishment Hardware Upkeep
- Industrial and Warehouse Facility Door Hardware Service
- Government and Municipal Building Maintenance
- Professional Door Hardware Contractor Tool Inventory
Why Choose Von Duprin Quality?
Von Duprin exit device parts and accessories are manufactured to the same exacting standards as their full product line, ensuring reliable performance and precise compatibility with 55 Series hardware. This Grade 1 commercial-rated replacement hex key reflects Von Duprin's commitment to providing professionals with the correct tools for proper installation and maintenance. Engineered for demanding commercial applications where dependable performance and component integrity are essential.
Manufacturer Resources
Von Duprin 55 Series Catalog
Product Specs
- Product Group:
- Exit Devices and Trim
- Series:
- 55 Series
- Grade:
- Grade 1
- Product Subgroup:
- Parts and Accessories
- Subcategory:
- Parts and Accessories
- Product Type:
- Exit Devices Parts
- Commercial/Residential:
- Commercial
- Parts and Accessories Type:
- Replacement Parts
- Product Attribute:
- Parts and Accessories
- Fire Rating:
- No
- Product Category:
- Exit Devices and Trim
- Department:
- Door Hardware
Von Duprin 103866 – Frequently Asked Questions
1) Which Von Duprin exit devices does the 103866 special hex key work with?
The 103866 special hex key is made for Von Duprin 55 Series exit devices and their trim. It is a series-specific service tool, so treat it as a 55 Series item rather than a general-purpose wrench that covers other Von Duprin device families.
2) Can I just use a standard Allen wrench from my set instead of the Von Duprin 103866 hex key?
The 103866 is a special hex key, not a generic Allen wrench, and it is sized to the fastener geometry used on 55 Series exit device hardware. Using an off-size driver on those fasteners is how sockets get rounded out during a service call, which turns a simple adjustment into a parts replacement. If you service 55 Series devices regularly, keep the correct key in the truck kit.
3) Can a Falcon or Accentra exit device replacement part be used in place of the Von Duprin 103866 special hex key?
No, and the distinction matters when ordering. The Von Duprin 103866 is a special hex key, a service tool for adjusting and maintaining Von Duprin 55 Series exit devices and trim. Parts such as the Accentra 7110/7120 exit device top latch replacement component and the Falcon 610061 24 Series Monarch concealed vertical top rod for F-25-C and F-25-CWDC exit devices are functional hardware that mounts in the device and stays on the door. A hex key drives the fasteners; a latch or rod is what gets driven. If the 55 Series device needs adjustment, order the 103866; if a latch or rod has failed on another brand of device, the replacement component for that specific device is the correct line item.
4) Is the Von Duprin 103866 hex key a genuine Von Duprin part or an aftermarket tool?
It is a genuine Von Duprin replacement part, catalogued as model 103866. For a maintenance shop reordering by part number, that is the number to put on the PO.
5) I need a replacement part for my exit device, not a service tool. Is the Von Duprin 103866 what I want?
No. The 103866 is the hex key used to service and adjust Von Duprin 55 Series exit devices, not a working component of the device. If you are replacing hardware that stays in the door, you want the actual part: for a Falcon 24 Series Monarch concealed vertical rod application, that is the Falcon 610061 top rod for F-25-C and F-25-CWDC devices; for an Accentra 7110/7120 device, the top latch replacement component. For a pair of doors without a center mullion, the Falcon 4023 steel mullion is the relevant hardware.
6) What do I order if the exit device problem is a cylinder or keying issue rather than a fastener adjustment?
Go to the cylinder housing, not to a driver tool. The Von Duprin 103866 is a special hex key for servicing 55 Series exit devices and trim, so it addresses fastener engagement and adjustment. A keying or core problem sits in a different component: the Arrow 16RCR-27 is an SFIC rim housing in 6/7-pin configuration from the 24/25 Series, which is the part that accepts a small format interchangeable core on a rim device. A locksmith rekeying a building works with the housing and core; a technician adjusting device travel or trim fasteners works with the hex key. Many service calls need both on the truck, but they are separate orders.
7) We are outfitting a double door opening with no center post. Is the 103866 part of that scope?
No. The Von Duprin 103866 is a commercial service tool for 55 Series exit devices and trim, used during maintenance and adjustment. A double door opening without a center post is a mullion question: the Falcon 4023 is a steel mullion for double door exit device applications, and the Falcon 525 aluminum mullion stabilizers are an exit device accessory that works with a mullion installation. Those define what the opening gets built with. The hex key belongs in the technician's tool inventory for servicing 55 Series hardware after it is hung, which is why facility maintenance programs stock it alongside the hardware rather than in place of it.
8) Our openings run Falcon and Accentra devices, not Von Duprin. Does the 103866 still belong in the tool kit?
Match the tool to the device line you actually service. The Von Duprin 103866 special hex key is engineered specifically for Von Duprin 55 Series exit devices and trim, so it is the right instrument on a 55 Series adjustment. A mixed portfolio brings its own part families with it: Falcon T Series openings use parts like the Falcon T Series 2-3/8 inch square corner deadlatch, Falcon 24 Series Monarch concealed vertical devices use the 610061 top rod, and Accentra 7110F devices use their own top latch replacement component. A facility standardizing on one device line keeps a shorter tool and parts list; a mixed portfolio needs the series-correct item for each.
9) Is the Von Duprin 103866 hex key rated for commercial exit device work or is it a light-duty tool?
Von Duprin lists the 103866 as a commercial, Grade 1 item within the 55 Series exit device line. That puts it in the same duty class as the hardware it services, which is what a facility maintenance team or hardware contractor wants for repeat use across an openings program.
10) Does the Von Duprin 103866 hex key carry a fire rating, and does it matter on a fire-rated opening?
No fire rating is carried by the 103866. It is a service tool, not a component that stays in the door, so it adds nothing to and takes nothing from a fire-rated opening. The rating that matters on that door comes from the exit device and trim installed on it.
How fast can I get the Von Duprin 103866 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Von Duprin 103866 come with a warranty?
Absolutely. The Von Duprin 103866 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Von Duprin 103866?
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