Although it is practically impossible for the architect to keep posted on all that the market contains in the line of " builders' hardware," still it is necessary that he be familiar with the kinds and qualities of hardware in common use, so that he may be able to specify or select such hardware as is best adapted to his purpose and to distinguish between the different qualities. Builders' hardware may be divided into two classes - rough hardware and finished hardware - the latter being usually designated as "shelf" hardware or trimmings.

Rough Hardware

The principal forms of hardware in this class come under the head of nails, screws and bolts.