Sigma
IWATA BOLT Informational Magazine.
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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
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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
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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
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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
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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