A.Eric Borden, owner of ESB Contracting in Forked River, N.J., responds: Clipped-head nails are collated at a steeper angle than round-head nails. The steeper collation angle provides two main advantages: There are more nails in a stick, and the working clearance (the angle between the gun and the work) is greatly improved.

The model building codes do not require the use of round-head nails. The codes specify nails by length and by shank diameter, not by the type of nail head. Lateral load capacity depends on a nail shaft’s shear strength, and withdrawal resistance depends on shank type. An increase in withdrawal resistance can be achieved by using a screw-shank or...

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