Sigma

IWATA BOLT Informational Magazine.

Sigma

IWATA BOLT Informational Magazine.

  • Sep 1969 Issue

    Sep 1969 Issue

    [Sigma 1]

    • 1.Issuing ... Yukichi Iwata, President
    • 〈Control System of Iwata Bolt〉
    • 2.Current status of our IT department
    • 〈From Quality Control Section〉
    • 3.Quality assurance system in our manufacturing department
    • 〈Explanation of screw terms 1〉
    • 4.Regarding the distinction between bolts and screws
    • 〈Overseas spot news〉
    • 5.US screw production is about 600 billion yen, about 4 times that of Japan
    • 6.The tightening standards for automobile fasteners
    • 7.Nut inspection for 7200 pieces per hour
    • 8.MP35N gets attention as a fastener material for space and ocean development
    • 9.Increased interest in aluminum coating due to corrosion resistance