M1, M2, or M3 concentric hanger with a heavy duty washer, 5" all thread rod, and 2 hex nuts.
 
Concentric hanger details:
M1 - use on top or bottom chord with gap width of .85"-1.0875". Can also be used on standard strut bar.
M2 - use on top or bottom chord with gap width of .96"-1.2". Cannot be used on standard strut bar.
M3 - use on standard strut bar, has additional secure point that helps with seimic ???
 
Available in thread hole sizes and uses:
1/4" - general use
3/8" - up to 4" diameter pipes, weight up to 1500 lbs, cULus
1/2" - up to 8" diameter pipes, weight up to 4050 lbs, cULus