The textblocks were sewn with tackets, with leather stays along the inside fold as reinforcement. These tackets also secured the textblock to the covers; on some of the Nag Hammadi bindings, the tackets extended to the outside of the covering leather, while on others the tackets were attached to a strip of leather which served as a spine liner, and which was in turn pasted to the covers. A flap, either triangular or rectangular, extended from the front cover of the book, and was wrapped around the fore edge of the book when closed.
The textblocks were attached with clasps, with leather supports along the inside fold as reinforcement. These clasps also secured the textblock to the covers; on some of the Nag Hammadi bindings, the clasps extended to the outside of the covering leather, while on others the clasps were attached to a strip of leather which served as a spine liner, and which was in turn pasted to the covers. A flap, either triangular or rectangular, extended from the front cover of the book, and was wrapped around the fore edge of the book when closed.