Sigma

IWATA BOLT Informational Magazine.

Sigma

IWATA BOLT Informational Magazine.

  • Mar 1974 Issue

    Mar 1974 Issue

    [Sigma 19]

    • 1.Turbulence ... Yukichi Iwata, President
    • 〈 Fastening series 1〉
    • 2.Screws also cry at night ◇ Delayed Fracture of bolts ◇
    • 〈Standards〉
    • 3.Hexagon socket head taper screw plug
    • 〈Product introduction〉
    • 4.Scoville blind rivet
    • 5.Ivy Tie and Ivy Touch
    • 6.HIOS
    • 〈Iwata Bolt News〉
    • 7.Completion of new construction of Sendai branch, 9th QC circle(club) competition, New Year Ceremony
    • 〈Things about screw Vol 7〉
    • 8.Pre-History of Screw- The Origin of Nail
    • 9.Right-handed is left-handed
    • 〈Fastening idea〉
    • 10.Confirm proper tightening of bolts with a single washer
    • 11.Increase production efficiency by 50% with self-piercing rivets
    • 12.Elastomer fasteners prevent vibration and noise
    • 13.Two ideas for screws
    • 〈Overseas spot news〉
    • 14.American metric screw concept

  • Jul 1973 Issue

    Jul 1973 Issue

    [Sigma 18]

    • 1.American design engineering show ... Yukichi Iwata, President
    • 〈Common sense of screw 2〉
    • 2.What are machine screws? Types and process
    • 〈Investigating screw related accidents III〉
    • 3.Cound be a main cause of highway accident?
    • 4.DYI Soarer
    • 〈Fastening Idea〉
    • 5.★Terminal screw that clamps wires of different sizes
    • 6.★Swage nut that forms a strong female thread on a thin plate
    • 7.★Flange nut that locks with strong spring force
    • 8.★Surpress nut with excellent anti-loosening effect

  • Apr 1973 Issue

    Apr 1973 Issue

    [Sigma 17]

    • 1.How to handle screws for their roles ... Yukichi Iwata, President
    • 〈Common sense of screw 1〉
    • 2.What is a tapping screw? The performance and Process
    • 〈Things about Screws Vol. 6〉
    • 3.The last one becomes the first
    • 〈Investigating screw-related accidents Ⅱ〉
    • 4.Many screw accidents in the US
    • 〈Fastening Idea〉
    • 5.There is another way to lock the fastener

  • 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