Product Overview
RFB#3X6 Retrofit Bolt
3/8IN DIA X 6IN RETRO-FIT BOLT
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.
Key Features
- 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
Material
ASTM F1554 Grade 36
- Nut: ASTM A563 Grade A
- Washer: ASTM F844
ASTM F1554 Grade 55
- Nut: ASTM A563 Grade A Heavy Hex
- Washer: ASTM F436
ASTM F1554 Grade 105
- Nut: ASTM A563 Grade DH Heavy Hex
- Washer: ASTM F436
ASTM F593 Type 304 Stainless Steel
- Nut: ASTM F594 Type 304 Stainless Steel
- Washer: ASTM A240 Type 304 Stainless Steel
ASTM F593 Type 316 Stainless Steel
- Nut: ASTM F594 Type 316 Stainless Steel
- Washer: ASTM A240 Type 316 Stainless Steel
Finish
Zinc-plated (unless otherwise noted), available in HDG (per ASTM A153); stainless steel (RFB#5x8SS only)| Zinc plated, hot-dip galvanized
Options
Head Stamp:
- 3/8 in. diameter — length only
- 1/2 in. diameter or greater — length and no equal symbol
Color Identification for painted heads:
- Grade 36 — Blue
- Grade 55 — Yellow
- Grade 105 — Red
- Type 304 — Burgundy
- Type 316 — Light Blue
