ASTM A53 (ASME SA53) carbon steel Fasteners is a specification that covers seamless and welded black and hot-dipped galvanized steel Fasteners in NPS 1/8″ to NPS 26. A 53 is intended for pressure and mechanical applications and is also acceptable for ordinary uses in steam, water, gas, and air lines.
A53 Fasteners comes in three types (F, E, S) and two grades (A, B).
A53 Type F is manufactured with a furnace butt weld or may have a continuous weld (Grade A only)
A53 Type E has an electric resistance weld (Grades A and B)
A53 Type S is a seamless Fasteners and found in Grades A and B)
A53 Grade B Seamless is our most polar product under this specification and A53 Fasteners is commonly dual certified to A106 B Seamless Fasteners.
