Sigma

IWATA BOLT Informational Magazine.

Sigma

IWATA BOLT Informational Magazine.

  • Jun 1980 Issue

    Jun 1980 Issue

    [Sigma 30]

    • 〈1980 Design Engineering Show〉
    • 1.More interest in metric screws
    • 〈 Special feature〉
    • 2.Loading Condition in Bolted And Reveted Joints Affected by Plate Thickines Ratio
      …H. H. Chiada / A. K. Abdel Rachif 
      　Translated by Masataka Iwata
    • 3.Special head groove shape developed one after another

  • Oct 1979 Issue

    Oct 1979 Issue

    [Sigma 29]

    • 〈Special feature〉
    • 1.Guidelines for Effective Fastener Selection
      （From Assem1 by Engineering, May, 1979）
      Jim Spec
      　Translated by Kioyotaka Iwata, Masataka Iwata
    • 〈1979 Design Engineering Show〉
    • 2.Technology and development for the future
    • 3.Visiting Tanegashima

  • Mar 1979 Issue

    Mar 1979 Issue

    [Sigma 28]

    • 〈Special feature〉
    • 1.LRM tightening system: Its principle and application
      （from Fastener Technology 7/8, 1978）
      … S.Eshguy 
      　Translated by Masataka Iwata
    • 〈 LPM tightening system〉
    • 2.SPS Wrench 125

  • Dec 1978 Issue

    Dec 1978 Issue

    [Sigma 27]

    • 〈Special feature〉
      Design and Performance of Automoatic Control System For Fastener Tightening.
      （from Proc Instn Mech Engs Vol 191 38/77）
      … J. T. Voice / P. W. Wallace
      Translation: Masataka Iwata

  • Jul 1978 Issue

    Jul 1978 Issue

    [Sigma 26]

    • 〈Overseas report〉
    • 1.1978 Design Engineering Show
      Further expanion of the fields of use for electronics
    • 〈Overseas News〉Post screw import issue in the US
    • 2.It is up to ITC again
    • 3.How to secure demand for screws in case of war