Don-Jo RG-50 Flush Bolt Replac...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$2.46
$2.15
Don-Jo RG-50 Flush Bolt Replacement Guide for 1550 & 1551 Series, White Plastic

Don-Jo RG-50 Flush Bolt Replacement Guide for 1550 & 1551 Series, White Plastic

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Model: RG-50

In Stock (leaves warehouse same day if ordered before 3pm ET)

$2.46
$2.15
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Don-Jo RG-50 Flush Bolt Replacement Guide for 1550 & 1551 Series — White Plastic

The Don-Jo RG-50 is a purpose-built replacement guide designed specifically for compatibility with Don-Jo 1550 and 1551 Series aluminum door flush bolts. Constructed from durable plastic in a clean White finish, this replacement component restores proper flush bolt operation and is sold in a convenient shelf pack of 10, making it an ideal stocking item for commercial door hardware maintenance programs. Classified under Door Trim and Accessories, the RG-50 is engineered for commercial applications where reliable flush bolt performance is essential.

Key Features

  • Targeted Compatibility: Designed as a direct replacement guide for Don-Jo 1550 and 1551 Series aluminum door flush bolts, ensuring proper fit and restored functionality.
  • Plastic Construction: Made from durable plastic material that provides reliable performance as a guide component within the flush bolt assembly.
  • White Finish: Clean White finish integrates seamlessly with matching door hardware and trim for a consistent aesthetic.
  • Convenient Pack Quantity: Available in a shelf pack of 10 units, ideal for facilities maintenance teams and hardware distributors managing commercial door hardware inventory.
  • Commercial Grade: Rated for commercial use, suitable for demanding environments where flush bolt components require periodic replacement.
  • Easy Restocking: Compact replacement part that simplifies maintenance and reduces door hardware downtime in commercial settings.

Technical Specifications

  • Product Group: Door Trim and Accessories
  • Product Subgroup: Flush Bolts
  • Product Type: Flush Bolts
  • Subcategory: Flush Bolts
  • Commercial/Residential: Commercial
  • Product Category: Door Trim and Accessories
  • Department: Door Hardware

Typical Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Don-Jo RG-50?

Don-Jo flush bolt components are engineered to deliver consistent, professional-grade performance in commercial door hardware applications. The RG-50 replacement guide is manufactured to exact specifications for the 1550 and 1551 Series, ensuring a reliable fit and restoring full flush bolt functionality with minimal effort. For facilities managers and hardware professionals seeking dependable replacement parts, the Don-Jo RG-50 is a trusted solution backed by Don-Jo's commitment to quality commercial door hardware.

Manufacturer Resources

DON-JO Bolts & Latches

Product Specs

Product Group:
Door Trim and Accessories
Product Subgroup:
Flush Bolts
Product Type:
Flush Bolts
Subcategory:
Flush Bolts
Commercial/Residential:
Commercial
Product Model:
RG 50
Product Category:
Door Trim and Accessories
Product Substrate:
Plastic
Department:
Door Hardware

Don-Jo RG-50 – Frequently Asked Questions

1) What flush bolts does the Don-Jo RG-50 guide fit?
The RG-50 is the replacement guide for Don-Jo 1550 and 1551 Series aluminum door flush bolts. It is made for those two series only, so if the bolt in your door is another brand or another Don-Jo series, this guide is not the part. Match the bolt body stamping before ordering.
2) Is the RG-50 a complete flush bolt or just a part of one?
Just a part. The RG-50 is the guide component that the flush bolt rod runs in, not the bolt assembly itself. If the bolt body, rod, or lever is what failed, you need a new flush bolt rather than the guide. For a full replacement on paired doors, the Ives FB358 manual flush bolt and the ABH 1855S single manual flush bolt are complete units.
3) Can an ABH or Ives flush bolt guide be used in place of the Don-Jo RG-50?
No. The RG-50 is a plastic guide made to the dimensions of the Don-Jo 1550 and 1551 Series aluminum door flush bolts, so it seats correctly only in those bolt bodies. Comparable flush bolts such as the ABH 1855S manual flush bolt single for metal doors with 3/4 inch throw and the Ives FB358 manual flush bolt with 3/4 inch throw and 1/2 inch bolt diameter are complete bolt assemblies from other makers, built to their own geometry. If the bolt in the door is not a Don-Jo 1550 or 1551, the RG-50 is the wrong guide and the whole bolt is the item to look at.
4) The flush bolt itself is worn out, not just the guide. What replaces a Don-Jo 1550 or 1551 on an aluminum door?
When the bolt body is the problem rather than the guide, the RG-50 will not bring it back and a full manual flush bolt is the replacement. The International Door Closers FB-1202 is a manual flush bolt with a positive U joint actuator, 5/8 inch throw, 1/8 inch offset with 7/8 inch backset, square end, and it ships with a guide. Other manual options for the same job are the ABH 1855S single flush bolt for metal doors with 3/4 inch throw and the Ives FB457 manual flush bolt with a 12 inch rod length for metal doors. Match the throw, offset, and backset to the prep already cut in the stile before ordering.
5) The inactive leaf is on a fire rated pair. Does a guide replacement cover it, or is a different bolt required?
A guide is a wear part inside the bolt and does not carry a rating of its own, so a fire rated pair is decided by the bolt assembly in the door. Fire rated choices in the same category include the ABH 1854 Series manual flush bolt set supplied with a fire bolt, the ABH 1858 universal bottom fire bolt with manual operation, the ABH 1860P/1862P automatic flush bolt pair that is fire rated 3 hour with a thermal lock, the Ives FB41 automatic flush bolt set for wood doors rated 90 minutes, and the Ives FB42 top automatic flush bolt for wood doors with an auxiliary fire latch. Confirm the rating against the door label and the leaf material before selecting.
6) How many Don-Jo RG-50 guides come in a pack?
Ten. The RG-50 ships in a shelf pack of 10, which is why it works as a stocking item for a maintenance crew carrying spares for a building full of 1550 and 1551 flush bolts rather than a one-door repair.
7) My aluminum storefront door has a sloppy flush bolt that will not stay up. Do I need a whole new bolt?
Not always. On Don-Jo 1550 and 1551 Series bolts in aluminum doors, a worn guide is a common cause of a rod that binds or drifts, and the RG-50 replaces that guide to restore normal operation without pulling the bolt out of the door. If the bolt body or the lever itself is damaged, replace the bolt instead.
8) Can I use the Don-Jo RG-50 guide on a fire rated pair of doors?
The RG-50 is a service part for Don-Jo 1550 and 1551 Series bolts and carries no fire rating of its own, so on a fire rated opening the rating comes from the flush bolt assembly you are servicing. If the pair needs a fire rated flush bolt in the first place, the Ives FB41 automatic flush bolt set for wood doors is rated 90 minutes, and the ABH 1860P/1862P automatic pair is fire rated 3 hour.
9) What is the alternative if the inactive leaf should not be operated by hand at the bolt?
The RG-50 serves manual Don-Jo 1550 and 1551 Series bolts, which are worked at the bolt itself. Where the inactive leaf needs to release without someone reaching for the bolt, the alternatives are a different mechanism rather than a different guide: the Adams Rite MS2180 Series auto release two point flushbolt with Smartlock mechanism, the Adams Rite MS1880/MS1881 two point flushbolts with interlock mechanism, and the Ives FB41 automatic flush bolt set for wood doors with 3/4 inch throw. For key control at the leaf, the Adams Rite 1870 Series is a cylinder operated flushbolt with key control and the Adams Rite 1877 is a cylinder operated flushbolt for paired wood doors.
10) Is the Don-Jo RG-50 an option for a wood door pair?
The RG-50 is a guide for the Don-Jo 1550 and 1551 Series aluminum door flush bolts, so it belongs to an aluminum door application. Wood door pairs are served by bolts built for that leaf: the Adams Rite 1877 cylinder operated flushbolt for paired wood doors, the Ives FB41 automatic flush bolt set for wood doors with 3/4 inch throw, the Ives FB42 top automatic flush bolt for wood doors with auxiliary fire latch, and mortised options such as the Delaney 7 inch slide type mortise in flush bolt and the Delaney 6 inch square end solid brass flush bolt.
11) The exposed face of the old bolt is damaged as well as the guide. What are the face style options?
A guide sits inside the assembly and does not change what shows at the edge of the door, so a damaged face means replacing the bolt and choosing the end profile that suits the opening. Square end faces are offered by the Trimco 3999SE 6 inch corner mount square end flushbolt and the International Door Closers FB-1202, which is a square end bolt supplied with a guide. Rounded and radius profiles are offered by the Trimco 3999 6 inch corner mount rounded end flushbolt and the Orca Hardware 6 inch flush bolt with radius corners. Corner mount and mortise styles cut different preps, so confirm which the door already has.
12) What is the Don-Jo RG-50 flush bolt guide made of, and will it hold up in a commercial building?
Plastic, in white, and it is rated for commercial use. The guide is a wear part in the flush bolt assembly, which is why it is sold in tens: in high traffic openings the guide is the piece you replace periodically while the bolt itself stays in the door.
13) For a maintenance shelf covering several buildings, does stocking the RG-50 cover the flush bolts on hand?
The RG-50 covers one thing well: it is a commercial grade plastic guide for Don-Jo 1550 and 1551 Series flush bolts, sold in a shelf pack of 10, which suits a program where those bolts are already standard across the doors. It does not carry over to other makers' assemblies, so openings running an ABH 1854 Series set, an Adams Rite MS1880 Series two point flushbolt, or an Ives FB358 need their own parts or complete bolts held alongside it. Surveying which series is actually installed on the inactive leaves is what tells you how far a pack of RG-50 guides reaches.
14) Will the white RG-50 guide look out of place on a dark bronze or clear aluminum door?
The guide sits inside the flush bolt channel rather than on the face of the door, so the white finish is largely hidden in service. It is the only finish the RG-50 comes in.
How fast can I get the Don-Jo RG-50 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
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 Don-Jo RG-50 come with a warranty?
Absolutely. The Don-Jo RG-50 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 Don-Jo RG-50?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Don-Jo RG-50 from ZenSupply?
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