Simpson Strong-Tie RFB Retrofit Bolt, Type 316 Stainless

The RFB retrofit bolt is a precut threaded rod, supplied with nut and washer, to use with anchoring adhesives to anchor into existing concrete and masonry. Each end of the threaded rod is stamped with rod length in inches and color-coded indicating the grade or type of steel for quick and easy identification post-installation. For 1/2" diameters and larger, our distinctive No-Equal® symbol is also stamped. When used with a Simpson Strong-Tie® adhesive, it offers a complete engineered anchoring system.

• Nut and washer come fully assembled on Retrofit Bolt
• Stamped length, No-Equal symbol (for diameters ≥1/2") and color‑coded painted heads for easy identification
• Multiple grades available to meet light- to heavy-capacity needs
• Precut lengths and diameters designed to meet jobsite needs

Specifications (all models)

• Material: Type 316 Stainless Steel
• Install With: Use with Simpson Strong-Tie adhesives to anchor into existing concrete and masonry

Available options (see each model for exact values)

• Dimensions: 3/8 x 6, 1/2 x 6, 1/2 x 8, 1/2 x 10, 5/8 x 8, 5/8 x 10, 5/8 x 16, 3/4 x 10 1/2