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Our Structural Star Building Retaining Washers (Structural Retaining Stars) are domestically manufactured in the USA. Often referred to as seismic earthquake washers or Century Star Washers, our washers have an architecturally accurate historic pattern, and are used as anchor plates or wall washers that are connected to a tie rod or bolt on exterior walls of masonry buildings for structural reinforcement, used to brace the masonry wall against lateral bowing. They are available with a five or six point star design in hot galvanized cast ductile iron or may be custom-ordered in aluminum or bronze.

Our Star Washers are also specified in plans as Gib Plates, Hurricane Bolts, Pattress Plates, Masonry Restraints and Tie Backs.

We can provide you with all of the accessories such as rods, nuts, washers, plates and turnbuckles which you may require to complete the project.

Most Stars have a flat back and a 7/8″ ID. The Hot Galvanized recommended accompaniments are : 3/4 Ogee Washer, 3/4 USS Flat Washer, 3/4-10 Heavy Hex Nut and 3/4-10 x 6′ Threaded Rod. The 9″ Stars require 7/8″ hardware and the 13″ Stars require 1″ hardware.

The most popular size is 7-1/2″ (5 Point), although 5-1/2″ (6 Point), 7″ (5 Point), 9″ (6 Point), 10-1/2″ (5 Point), and 13″ (5 Point) are also readily available.


Allied Bolt and Screw Corporation, a Small Business incorporated in the Commonwealth of Massachusetts by Richard ‘Dick’ Goldberg, has been building strong relationships since 1961 with an expansive quality inventory, exceptional service and highly valued customer appreciation. Allied stocks 10s of thousands of products including Structural Retaining StarsContact Us for more information.