Retrofit Bolts

The RFB retrofit bolt is a clean, oil-free, pre-cut threaded rod, supplied with nut and washer. It is commonly used with Simpson Strong-Tie® adhesive to create a complete engineered anchoring system. Each end of the rod is marked with a color to signify the grade or type of steel, as well as with the rod length in inches. 

Frequently Asked Questions About Retrofit Bolts

What is a retrofit bolt used for? 

It is most commonly used alongside adhesive in applications that involve anchoring an object into concrete and/or masonry.

What sizes are retrofit bolts available in? 

AFT offers retrofit bolts in diameters from 3/8-3/4” and lengths from 4-16”. 

What materials and finishes are available for retrofit bolts? 

RFB retrofit bolts are available in steel, as well as in both zinc and hot-dipped galvanized finishes for corrosion resistance. 

Do retrofit bolts come with nuts and washers?

Yes, RFB retrofit bolts are sold with a nut and a washer.

Can retrofit bolts be used in existing structures? 

Yes, they are designed to be used in existing structures, and are commonly used in seismic retrofits to secure aspects of a structure to the concrete or masonry that is beneath it.