Commodity: Stainless Steel Square Head Bolts
Material: Made from 304 stainless steel, these screws have good chemical resistance and may be mildly magnetic. They are also known as A2 stainless steel.
Head Type: Square head.
Length: is measured from under the head.
Thread Type: Coarse Thread, Fine Thread.Coarse threads are the industry standard; choose these screws if you don’t know the pitch or threads per inch. Fine and extra-fine threads are closely spaced to prevent loosening from vibration; the finer the thread, the better the resistance.
Appliation: About half the strength of medium-strength screws, these screws can be used for light duty fastening applications, such as securing access panels. Large flat sides make them easy to grip with a wrench and keep them from rotating in square holes.
Standard: Screws that meet ASME B1.1, ASME B18.2.1, comply with standards for dimensions.