Sigma

IWATA BOLT Informational Magazine.

Sigma

IWATA BOLT Informational Magazine.

  • Jan 1973 Issue

    Jan 1973 Issue

    [Sigma 16]

    • 1.Strengthening the foundation of the 3 companies ... Yukichi Iwata, President
    • 〈Series : Proper screw tightening force 2〉
    • 2.Proper tightening force when no external force is applied
    • 〈Search for screw-related accidents〉
    • 3.Catastrophe with just a single screw
    • 〈Things about Screws Vol. 5〉
    • 4.Making a female screw is a secret
    • 〈Iwata Bolt News〉
    • 5.IBK factory installed the latest equipment for processing the waste liquid of plating
    • 6.terminal screw developed by Iwata Bolt is getting popular
    • 7.Fastening idea

  • Sep 1972 Issue

    Sep 1972 Issue

    [Sigma 15]

    • 1.The ruler is the same, but the content is not ... President Yukichi Iwata
    • 〈Special feature: Heat treatment of tapping screws〉
    • 2.Core processing reduces the rate of tapping screw fracture
    • 3.New range heat treatment creates structural tapping screws
    • 〈Series: Proper screw tightening force 1〉
    • 4.Role of screw parts and proper tightening force
    • 〈 Iwata Bolt News〉
    • 5."Invenstion of Screw" written by President Iwata published on "Inventions"
    • 〈Things about Screws 4〉
    • 6.Secrets of screw names
    • 〈Fastening Idea〉
    • 7.☆Assembly adjustment of heavy parts using socket screws
    • 8.☆Teflon tape prevents bolts from loosening
    • 9.☆Spline cap screw with high anti-fatigue
    • 10.☆Special head cap screw that guides the wrench
    • 11.☆Miniature press nut with strong holding power
    • 12.☆Elevator bolt with flat head

  • Jun 1972 Issue

    Jun 1972 Issue

    [Sigma 14]

    • 1.Think and chase only screws ... President Yukichi Iwata
    • 2.IBK Saitama Second Factory
    • 〈Things about screws 3〉
    • 3.History of wood screws
    • 〈Overseas spot news〉
    • 4.New American Metric Screw Plan (3)
    • 〈The 3rd Fastener Exhibition〉
    • 5.Labor saving product by Iwata bolt
    • 〈Fastening Idea〉
    • 6.What is a balanced design?

  • May 1972 Issue

    May 1972 Issue

    [Sigma 13]

    • 1.Live for the purpose of your life - Welcoming new employees -... Yukichi Iwata, President
    • 2.Mechanical properties of bolts and nuts
    • 〈Things about Screws  2〉
    • 3.Screws- The names of screws
    • 〈Overseas spot news 〉
    • 4.New American Metric Screw Plan (2)
    • 〈Fastening Idea〉
    • 5.New type of serrated screw is effective for joining cylinders
    • 6.Easy to spread the gap of materials by using bolts
    • 7.Grade 8 bolts that resist bending fatigue
    • 8.Torque nut with low tightening torque
    • 〈 Iwata Bolt News〉
    • 9.Gunma branch opened

  • Mar 1972 Issue

    Mar 1972 Issue

    [Sigma 12]

    • 1.After traveling in the Middle East ... Yukichi Iwata, President
    • 2.This is how European managers look at Japanese screw companies
    • 〈Things about Screw 1〉
    • 3.The origin of the screw
    • 〈Overseas spot news〉
    • 4.America's metric screw concept
    • 〈Fastening Idea〉
    • 5.Hammer wrench that can be operated with one hand
    • 6.Attach screws to cover to prevent loss
    • 7.Use socket screw to adjust parts
    • 8.Adjust the embedding of the nut using a hard plate
    • 〈 Iwata Bolt News〉
    • 9.☆Saitama Second Factory ☆ New employee welcome ceremony