Fastener Strength Grade/Class: ASTM Grade A
Material: Steel
Threading: Fully/ Half Threaded
Thread Spacing: Coarse
Specifications Met: ASTM A307
Drive Style: External Square
Fastener Head Type: Square
Thread Direction: Right Hand
Thread Fit: Unified Standard Class 2A
Thread Type: UNC
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Square head bolts, also called machine bolts are threaded to receive a nut. These decorative bolts come in smooth, hammered and pyramid head styles.
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. Material meets ASTM A307 specifications for quality. Length is measured from under the head.
