Holiday Schedule: Offices & manufacturing closed 11/23 & 11/24 for Thanksgiving.

Solid Ceramic

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

stock ceramic hex head fasteners - U.S. InchU.S. inch hex head solid ceramic bolts and machine screws are fully threaded. Our solid ceramic fasteners are produced under ISO 9001:2015 compliance and ideally suited for laser chamber assemblies. Heat resistant, non out-gassing and dust free.

Produced in America. Inventoried stock fasteners ready for immediate shipping.

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 U.S. Inch 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
#0-80 alumina 5/32" .171 min. .043 - .050
zirconia
#2-56 alumina 1/8" .134 min. .040 - .050
zirconia
#4-40 alumina 3/16" .202 min. .049 - .060
zirconia
#5-40 alumina 3/16" .202 min. .058 - .070
zirconia
#6-32 alumina 1/4" .272 min. .080 - .093
zirconia
#8-32 alumina 1/4" .272 min. .096 - .110
zirconia
#10-24 alumina 5/16" .340 min. .105 - .120
zirconia
#10-32 alumina 5/16" .340 min. .105 - .120
zirconia
1/4"-20 alumina 7/16" .484 min. .150 - .188
zirconia
1/4"-28 alumina 7/16" .484 min. .150 - .188
zirconia
5/16"-18 alumina 1/2" .545 min. .208 - .230
zirconia
3/8"- 16 alumina 9/16" .614 min. .270 - .295
zirconia

Dimensions Per ANSI B18.6.3-1972 (R1991)

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 Assistance is 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.