ASTM A307 Grade A Hex Cap Screws

ASTM A307 Hex Cap Screws are general-purpose fasteners made from low-carbon steel, often referred to simply as machine screws in this grade. Like A307 bolts, they are covered under Grade A of the specification, requiring a minimum tensile strength of 60 ksi. These Hex Cap Screws are characterized by their hexagonal head and are typically manufactured with precision threading to drive directly into a tapped hole without needing a nut. They are extensively used for joining components in machinery, equipment assembly, and light structural work where moderate strength is adequate. Due to their economic cost and ease of installation, they are a staple fastener in fabrication shops and maintenance departments. Zeron Fasteners manufactures and supplies high-quality A307 Screws, available in various finishes like zinc plating for protection against corrosion.

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