* * Drill hole to a depth exceeding minimum embedment using a bit whose diameter is equal to the anchor. Holes should be drilled using a bit conforming to ANSI-B94. 12-77 Insert Thunderbolt into hole so that washer is flush with fixture to be fastened. Tighten nut 2 or 3 turns.
SELECTING THE PROPER LENGTH THUNDERBOLT
The selection of the proper length Thunderbolt depends upon the thickness of the material to be fastened and the minimum depth of anchor required in masonry for maximum holding power. Add the thickness of the material (A) and the recommended depth for the anchor diameter (B) to determine the correct length of anchor to be used.
Listed or Approved by: International Conference of Building Officials (ICBO). ICBO Report No. 2713. Underwriters Laboratories Inc., (UL). No. EX2224 (N)
Board of Standards and Appeals, (BSA). No. 551-73-SM Meets or exceeds U.S. Government G.S.A. Specification FF-S-325, Group II, Type 3, Class 3, Interim Amendment 7/65.
Thunderbolts have been used for over 20 years in all phases of industry offering QUALITY, PERFORMANCE, DEPENDABILITY, thus assuring the ultimate in expansion anchors.
