USA A307 Grade B Heavy Hex Cap Screws, Plain (Inch)

USA‑manufactured A307 Grade B Heavy Hex Cap Screws are engineered for dependable performance in structural, industrial, and general‑purpose fastening applications. Produced from high‑quality carbon steel, these heavy hex cap screws feature a larger head size for increased bearing surface, improved wrenching strength, and superior clamping capability. Designed to meet ASTM A307 Grade B mechanical requirements, these fasteners offer consistent tensile properties suitable for steel fabrication, equipment assembly, construction, and maintenance work.

Supplied in a plain, uncoated finish, these American‑made screws are ideal for applications where additional plating, galvanizing, or coatings are not required. They provide a versatile fastening option for use in controlled indoor environments or in assemblies where surface treatments will be applied after installation.