Using the proper specific bolt, nut, washer, and screw type is very critical when working on a wood or metal project. Knowing the names and the specific types of screws, bolts, washers, or nuts you will need for your current or future DIY project is very important.
Fasteners are identified by four or five attributes; type, material, diameter, length, and thread pitch or count (machine thread fasteners only). This page describes what these attributes represent.
At one time or another, all of us (even the pros) misidentify a fastener. Not that the guys at the hardware store don’t need a chuckle every now and them. Use this handy chart to get the name right the first time!
Image source: Gregory Han
Move on to the Next Page article: Use This Cheat Sheet To Identify Almost Any Nut, Screw, Bolt, Or Washer.