... Alumina Ceramic/Steatite C Alumina Ceramic screws and nuts(M2.5\M3\M4\M5) Ceramic screw, alumina screw, zirconia ... for electrical resistanceAlumina Content 80-85%90-96%> 99.5%99%General Application Lower Cost Electrical & MechanicalHigh Strength, ... 25°C1 MH10 MH8.5-8.98.4-8.89.2-9.89.0-9.69.5-9.99.3-9. ... dielectric strengthExcellent electrical resistance Abrasion resistance M2.5\M3\M4\M5 Ceramic screw