8

Special screws with a wall multiplier of 5 times and a floor multiplier of 5 times to prepare for unexpected earthquakes!
山喜産業
Prepare for massive earthquakes with the 'GH5 screw,' which realizes high-strength walls with increased design flexibility, and the 'Nedazero 5 screw,' developed for seismic floors using a joist-less construction method.
21

Automotive press-processed parts: "Progressive die internal pierce nut fastening processing"
プレテック 本社
Since it is possible to fasten the nut within the die, cost reduction is achievable.
21

Reduction of man-hours without the need for tongue-type washers: Lock nuts for single hexagonal bearings.
ハードロック工業
No need to bend the troublesome tongue-shaped washer onto the lock nut at all! Hexagonal single type.