Ceramic Screws

  • HOME
  • Ceramic Screws

We provide a wide variety including ceramic metric threads, unified threads, freesized threads, etc. Free options are available for the head shape, such as the pan, flat, hexagon (neck bolt), hexagon socket (head cap bolt) and pan (head gas hole). The material could be also widely selected from alumina, zirconia, etc. Any size from M1 to the neck is available for manufacturing. We offer them with a high quality and a low price.

Alumina  Al2O3

cream color
Alumina is a typical example of Fine Ceramics. In terms of mechanical properties, alumina offers abrasion resistance and high strength. In terms of thermal properties, it has high heat resistance. In terms of electrical properties, it is a material with excellent electrical insulation properties. Another feature of Fine Ceramics is that they are relatively inexpensive. Applications include wear-resistant components, corrosion-resistant components, semiconductor manufacturing equipment components, and high-temperature zone components.

It is characterized by its white color tone while having almost the same level of purity as KMA, and its characteristic values are almost the same as those of KMA.
Applications are the same as KMA995, for those who desire white color.

Zirconia ZrO2

white color
High mechanical properties, high strength, and high toughness compared to alumina. It is a recommended material if strength is the only requirement.Low thermal conductivity. It has a heat shielding effect.
Applications include wear-resistant materials, industrial knives, and other toughness applications

Silicon carbide (SiC) SiC

Black color
It has relatively high thermal conductivity and semiconductive electrical properties at the level of static electricity elimination.
Chemical resistance and high hardness are also its characteristics.
Applications include chemical resistant parts, high temperature range parts, and static electricity eliminating parts.

Checca silicon Si3N4

gray color
One of the characteristics of this material is its high strength and toughness with excellent thermal shock resistance.
It is also a material that does not easily undergo thermal expansion.
Applications include high-temperature zone components, crusher components, and metal jigs.

Aluminum nitride AlN

gray color
If you are looking for heat conduction while insulating, this material has excellent heat dissipation properties.
Applications include heat equalization components, high temperature zone components, and semiconductor manufacturing equipment components.

Steatite MgO・SiO2

white color
Excellent insulation properties even at high temperatures. It is also a material with excellent machinability.
Applications include circuit components

Zircon cordierite

gray color
This material has high heat resistance, low thermal expansion, and low thermal conductivity.
Applications include heat-resistant, low-thermal-expansion materials and stages for semiconductor probers.

*1:Discoloration may occur if left under ultraviolet light for long periods of time

Click for the material PDF

Kimura Tech Corporation Material Characteristics Table

Classification Alumina Zirconia SiC Si3N4 AlN Steatite Zircon cordierite
main ingredient 99.7 99.6 96 92
color cream white white white black gray gray white gray
bulk density g/cm3 3.9 3.9 3.7 6 3.1 3.2 3.3 2.8 2.7
machine Bending strength Mpa 400 390 320 1000 450 800 350 200 150
Young’s modulus Gpa 390 380 300 210 400 300 120
Vickers hardness GPa 14 14 13 13.2 24 16 5.6
Poisson’s ratio 0.24 0.24 0.23 0.31
Fracture toughness Mpam1/2 4.1 4 3.5 4 4.6 6
heat Thermal expansion coefficient *10-6 6.4 5.8 7.7 11 4 3 4.5 6.5 2~3
Thermal conductivity W/(m・K) 30 28 21 3 80 17 170 3 1.2
specific heat J/(kg/K) 0.78*103 0.78*103 0.78*103
electricity dielectric constant [1MHz] 10.1 6.4 9.5 8.5 8.8 6 6.5
dielectric tangent *10-4 50 5 18
volume resistivity Ω・㎝ 1015 1015 1014 1012 103~104 1012 1013 1014 1013
Breakdown Voltage kV/mm 12 16 10 11 15 13 10
feature high strength
Insulating Large
abrasion resistance
chemical resistance
high strength
abrasion resistance
High Fracture Toughness
Low heat conduction
high strength
chemical resistance
high strength
abrasion resistance
Thermal shock resistance
high strength
high thermal conductivity
Insulating Large Low thermal expansion
Low heat conduction
use wear-resistant material
Corrosion Resistant Parts
Semiconductor Equipment Components
Wear Resistant Parts
Industrial Cutlery
mechanical seal
Sliding parts
High Temperature Components
molten metal、Elastic Machined Parts
Heat Equalizing Components
High-temperature processing jig
Semiconductor Equipment Components
Circuit Components Heat-resistant parts
Low thermal expansion parts
Halogen Lamp Parts

The above values are for reference only and are not guaranteed. The values may vary depending on the shape.


Contact Us

Kimura Tec Inc.

Please feel free to contact us for consultation and request for quotation.

TEL:0748-52-2157 / FAX:0748-52-2303

【Business Hours】7:50~17:00
 【Holiday】Sun.Sat. & Holidays

Contact Form