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Maximum Torque Values

Ceramco has established (maximum) service torque values for customers whose application(s) may be dependent on specific torque or preload requirements

Read the data…

Solid Ceramic

Hex Head Machine Screws & Bolts - Metric  | → U.S. Inch

stock ceramic hex head fasteners - MetricMetric hex head solid ceramic bolts and machine screws are fully threaded. Our solid ceramic fasteners are certified to ISO 9001:2015 manufacturing standards and ideally suited for helping to keep energy production clean safe and renewable in the 21st century.

Produced in the United States. Available immediately, fasteners shipped daily.

No Free Samples

*Available sizes, compositions and lengths vary and may be dependent upon material properties and performance characteristics. Please check our website for the most up-to-date information.

Hex head metric fastener dimensional reference

To order fasteners:find the correct size, then select the composition you require.

    A B C
Size Com­posi­tion Head
Flat-to-Flat
Head
Point-to-Point
Head
Height
M2 x 0.4 alumina 3.02 - 3.20 3.38 Min 1.3 - 1.6
zirconia
M3 x 0.5 alumina 4.85 - 5.00 5.40 Min 2.0 - 2.3
zirconia
M4 x 0.7 alumina 6.78 - 7.00 7.59 Min 2.6 - 3.0
zirconia
M5 x 0.8 alumina 7.78 - 8.00 8.71 Min 3.3 - 3.8
zirconia
M6 x 1.0 alumina 9.78 - 10.00 10.95 Min 4.1 - 4.7
zirconia
M8 x 1.25 alumina 12.73 - 13.00 14.26 Min 5.2 - 6.0
zirconia

Dimensions Per ANSI B18.6.7M-1985

Important Information -Please Read

Alumina & zirconia (PSZ) fasteners

  1. The pitch diameter of male threads will not exceed the max allowable according to Class 2. Minimum allowable pitch diameter may be below that of Class 2, conversely for female threads. Due to shrink factor variances, the stack up tolerance cannot be controlled on the pitch. It is recommended that you not engage more than 5 to 10 threads on any male fastener.
  2. No warranty with respect to torque strength and tensile strength is extended or implied. Ceramic materials are inherently brittle and display catastrophic failure if impacted or stressed beyond material limits.

Heat Resistant Corrosion Resistant Non-conductive Non Out-Gassing

Stock ceramic fasteners from Ceramco, Inc. Specializing in custom ceramic parts of complex geometries. Learn More.

Immediate Assistanceis only a phone call away. If you have any questions or require additional information, please call Ceramco at: +1 (603) 447-2090, Monday - Friday, 8:00 am - 4:30 pm, U.S. Eastern.