Provided herein is a fastener that may be used to secure objects to a channel strut or attach a channel strut to a structure. In an arrangement, the fastener is a fastener block configured for disposition within the interior of a channel strut. The fastener block has a body with an embedded reinforcing member. At least one aperture extends through the body of the fastener block between upper and lower surfaces. A fastener receptacle may be formed around the aperture. A standard nut or bolt may be inserted into the fastener receptacle.