We are a leading manufacturer and distributor of hand fastening screws specializing in wing bolts and nuts.

We strive to be the world’s premier supplier of hand fastening screws produced using a variety of materials.

Mitsuboshi, established in 1938, continues to be at the forefront in the manufacture of metal and plastic components striving to excel in quality, competitive pricing and large production volume by adhering to our company motto of “NANI KU SO” or, continuous improvement. With over 70 years as a leader in supplying butterfly bolts, nuts and hand fastening screws to various industries, we continue to develop new technologies which meet, or exceed the demands of our worldwide customer base.

The 21st century has brought many changes in the structure and composition of Japanese industry and Mitsuboshi will always work hard to be our customer’s best partner in current and future product requirements.

We greatly appreciate the loyalty and encouragement of our customers and will continue to improve our level of service by following our motto “NANI KU SO”.

手で締めるネジ
Wing Bolts
Wing Nuts
Eaglestar Knob
New Fit Knob Series
Knob bolts & nuts
Candy Knob bolts
Urea formaldehyde resin decorative screw
Adjuster bolts / Wood shield nuts
Push in rubber nuts
Various resin material
NS-Pin NS-Spring
Pre-production mold
Cassette type mold
On-demand (resin)
Custom-ordered (metal)
Example
CFRP
Munufacturing Process of CFRP
Resin Bolts
手で締めるネジの総合メーカー

三星産業貿易株式会社

本社 :
〒577-0054 大阪府東大阪市高井田元町2丁目15番12号
三重工場 :
〒518-1151 三重県伊賀市白樫2162番1

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