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Simpson Strong-Tie 1/2" x 6" Retrofit Bolt

Brand: Simpson Strong-Tie Mfg#: RFB#4X6
Product#: 137RFB46
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SPECIAL ORDER ONLY – Call your local branch (see Location link above). RFBs are pre-cut threaded rod. For use with Simpson Strong-Tie® Adhesives. May be ordered in bulk without the nut and washer. Use with Simpson Adhesives to anchor into existing concrete and masonry. Offers a complete engineered anchoring system when used with Simpson anchoring adhesives. Inspection is easy; each end of the threaded rod is stamped with rod length in inches and “No-Equal” symbol for identification after installation.


  • Brand: Simpson Strong-Tie
  • Material: Carbon Steel/ASTM A307-C
  • Anchor Diameter: .5 in
  • Finish: Zinc Plated
  • Length: 6 in
  • Special Features: With Nut and Washer