Thread forming and thread cutting tapping screws and metallic drive screws : inch series - American National Standards Institute (New York, New York : American Society of Mechanical Engineers, 1981)
Contenido: ANSI B18.6.4-1981.
A la cabeza de la portada: American National Standard.
Revised of B18.6.4-1966 (R1975).
Keywords: TORNILLOS; NORMAS; HERRAMIENTAS; ROSCAS