Located outside the USA?
Please read this important information on buyer responsibilities.

New!NOW AVAILABLE!

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 Nuts - U.S. Inch  | → Metric

stock ceramic hex nut - MetricU.S. inch ceramic hex nuts Our solid ceramic fasteners are made in compliance with ISO 9001-2015 requirements and ideally suited for deep well drilling assemblies. High compressive strength, low friction, corrosion resistant.

A product of the USA. Stocked fastener inventory, ready to fill your order.

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.

U.S. inch hex nut dimensional reference

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

    A B C
Size Com­posi­tion Flat-to-Flat Point-to-Point Height
#0-80 alumina 5/32" .171 - .180 .043 - .050
zirconia
#2-56 alumina 3/16" .205 - .217 .057 - .066
zirconia
#4-40 alumina 1/4" .275 - .289 .087 - .098
zirconia
#5-40 alumina 5/16" .344 - .361 .102 - .114
zirconia
#6-32 alumina 5/16" .344 - .361 .102 - .114
zirconia
#8-32 alumina 11/32" .378 - .397 .117 - .130
zirconia
#10-24 alumina 3/8" .413 - .433 .117 - .130
zirconia
#10-32 alumina 3/8" .413 - .433 .117 - .130
zirconia
1/4"-20 alumina 7/16" .488 - .505 7/32"
zirconia
1/4"-28 alumina 7/16" .488 - .505 7/32"
zirconia
5/16"-18 alumina 1/2" .557 - .577 17/64"
zirconia
3/8"- 16 alumina 9/16" .628 - .650 21/64"
zirconia

Dimensions Per ANSI B18.2.4.1M-1979 (R1995)

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.