Don-Jo 1551 Aluminum Door Flush Bolt, 4-1/4" x 15/16", Cast Brass

Don-Jo 1551 Aluminum Door Flush Bolt, 4-1/4" x 15/16", Cast Brass

The Don-Jo 1551 is a commercial-grade aluminum door flush bolt constructed from durable cast brass material, measuring 4-1/4" in length and 15/16" in width. Designed for use on aluminum doors, this flush bolt features a 1/4" offset — distinguishing it from the companion 1550 model which carries a 1/8" offset — making it ideal for applications requiring precise alignment and secure door retention. Available in DU and SL finishes to complement a variety of commercial door hardware installations.

Key Features

• Precise Dimensions: Measures 4-1/4" in length and 15/16" in width, providing a compact and reliable flush bolt profile for aluminum door applications.
• Cast Brass Construction: Manufactured from cast brass material for long-lasting durability and resistance to wear in commercial environments.
• 1/4" Offset Design: Features a 1/4" offset (model 1551), offering a distinct fit compared to the 1/8" offset of the companion 1550 model for flexible installation options.
• Multiple Finish Options: Available in DU and SL finishes to coordinate with existing door hardware and architectural requirements.
• Commercial-Grade Application: Engineered for commercial use, providing dependable door retention performance in high-traffic settings.
• Convenient Shelf Pack: Sold in shelf packs of 10, making it efficient for contractors and distributors managing multiple installations.

Technical Specifications

• Product Group: Door Trim and Accessories
• Subcategory: Flush Bolts
• Product Subgroup: Flush Bolts
• Product Type: Flush Bolts
• Commercial/Residential: Commercial
• Product Model: 1150, 1151
• 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 1551?

Don-Jo flush bolt products are built to meet the demands of commercial door hardware applications, combining cast brass construction with a precisely engineered 1/4" offset profile in the 1551 model. The 4-1/4" x 15/16" form factor delivers a reliable, low-profile solution for aluminum door installations where consistent performance and finish compatibility are essential.