Standard Specification Fasteners

Hwashin Bolt Industry supplies high-quality standard fasteners in full compliance with global industrial standards, including ASTM, ASME, KS, BSI, ANSI, JIS, DIN, ISO, and Siemens specifications.

Strengths of Our Standard Products

Integrated API 20E Supply: We provide standard fasteners with additional API 20E UNR thread processing to ensure compatibility with oil & gas flanges and drilling systems. Our standard fasteners are globally trusted and support the success of international projects.