Installation
1. Locate and identify an approved compatible anchorage. Be sure that the mounting location is
clean and free of debris.
2. Locate or drill a 21/32" diameter hole. Consideration should be given to allow sufficient clear-
ance to place the lockwasher and tighten the nut.
WARNING: on D-bolts installed to W-shaped beams, the mounting hole must be drilled
perpendicular to the flange (see Fig. 8b). D-bolts installed to S-Shaped beams must be
drilled perpendicular to the flange and a tapered (aka bevel, side hill or wedge) washer
must be used to ensure the D-bolt and/or nut and washer seats squarely against the
beam surface (see Fig. 8c).
416 D-Bolt Anchor
3. Mount the D-Bolt Anchor by passing an approved 5/8" grade 8 bolt through the hole in the
connector and through the hole in the structure. Attach the lockwasher and nut. Completely
tighten making sure the entire nut is engaged on the threads and the device is securely fas-
tened to the structure (see Fig. 8d). Torque to 125 ft. lbs.
WARNING: Do not overtighten. excessive tension can cause damage to the anchorage
system. use recommended torque value above.
Removal: Loosen and detach the nut and washer. Then remove D-Bolt Anchor from the an-
chorage/structure.
Fig. 8b
W-Shape (Wide Flange)
416 D-Bolt Anchor
E n gli sh
S-Shape (Structural I-Beam)
Tapered Washer
416 D-Bolt Anchor
Fig. 8d
15
Fig. 8c