Precision nuts used across a wide variety of industries.
We have developed a large number of variations in size and material, manufactured by cold forging. The flange acts as a washer.

Flange nut product lines

Brass flange nut

Stainless steel flange nut

Aluminum flange nut

Nominal diameter

Pitch

Flat diameter

Diagonal

Flange diameter

Total height

Height of hex head
(Minimum)

Flange thickness
(Minimum)

M3

0.5

5.5

6.08

8

3.7

2.4

1.0

M4

0.7

7

7.74

10

4.5

3.2

1.1

M4

0.7

8

8.87

11

5.0

3.3

1.1

M5

0.8

8

8.87

12

5.5

3.3

1.1

M6

1.0

10

11.05

13

6.0

4

1.5

M6

1.0

10

11.05

16

7.0

4

1.5

M8

1.25

12

13.28

17

7.5

5

1.5

M10

1.25

14

15.50

19

9.0

6

1.8

Our company
We have three plants in Tokushima prefecture: at our headquarters and in the towns of Donari and Ishii.

From development and design through manufacturing and sales,

all steps of the process are handled in Tokushima.

Nut use in Shikoku

Our skills
Our motto is product quality first -- We keep that goal first

and foremost as we craft our products.
We also pursue research into new materials and minute parts,

working to develop the latest technologies.

          metal casting mold                         Micro nylon nut     

•We work with: carbon steel, stainless steel, brass, aluminum, nickel silver, and pure titanium

•Molds produced in-house
At Nishi Seiko, we are fully committed to craftsmanship. That's why we handle all steps of the process, from designing

metal molds through to manufacturing

and machining them.

•Machining skills
We excel at machining short and small items.
We can produce nylon insert lock nuts

as small as M1.4.

•Manufacturing infrastructure
Our integrated manufacturing facilities accommodate all production steps in a unified fashion -- from research, development, and design, to manufacturing (wire drawing, casting, tapping, turning, secondary finishing, cleaning and degreasing, and packing),

and through to sales.

M1.4 nickel silver nylon nut

Committed to quality

IMS certificate (Japanese)            IMS certificate (English)

We actively pursue ways to improve our quality control infrastructure and develop products with low environmental impact.
Ours is the first firm in Tokushima to receive IMS certification

(February 25, 2011)