Solid Ceramic Fasteners

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ZTA (Zirconia Toughened Alumina) Fasteners Now Available - Complete List

Slotted Flat Head Machine Screws & BoltsU.S. Inch  |  Metric

stock ceramic flat head slotted fasteners - U.S. InchCeramic flat head slotted U.S. inch bolts and machine screws, as with all our ceramic fasteners, are chemically stable, fully dense (no open porosity), high purity oxides, exhibiting high mechanical strength.

To Order Fasteners:
  1. Find the correct Size
  2. Click-on the Composition you require
  3. Available lengths displayed on next page
Flat head slotted U.S. Inch fastener dimensional reference

Available sizes, compositions and lengths vary and may be dependent upon material properties and performance characteristics.

    A B C D
Size Com­posi­tion Head Diam­eter Head Height Slot Width Slot Depth
#0-80 alumina .099 - .119 .035 .016 - .023 .010 - .015
ZTA
zirconia
#2-56 alumina .147 - .172 .051 .023 - .031 .015 - .023
ZTA
zirconia
#4-40 alumina .195 - .225 .067 .031 - .039 .020 - .030
ZTA
zirconia
#5-40 alumina .220 - .252 .075 .035 - .043 .022 - .034
ZTA
zirconia
#6-32 alumina .244 - .279 .083 .039 - .048 .024 - .038
ZTA
zirconia
#8-32 alumina .292 - .332 .100 .045 - .054 .029 - .045
ZTA
zirconia
#10-24 alumina .340 - .385 .116 .050 - .060 .034 - .053
ZTA
zirconia
#10-32 alumina .340 - .385 .116 .050 - .060 .034 - .053
ZTA
zirconia
1/4"-20 alumina .452 - .507 .153 .064 - .075 .046 - .070
ZTA
zirconia
1/4"-28 alumina .452 - .507 .153 .064 - .075 .046 - .070
ZTA
zirconia
5/16"-18 alumina .568 - .635 .191 .072 - .084 .058 - .088
ZTA
zirconia
3/8"- 16 alumina .685 - .762 .230 .081 - .094 .070 - .106
ZTA
zirconia

Dimensions Per ANSI B18.6.3-1972 (R1991)

Material Properties Which is the best choice for your application?

Torque Values for applications dependent on specific torque or preload requirements.

Threads 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 threads on any male fastener.

Notice Ceramic materials are inherently brittle and display catastrophic failure if impacted or stressed beyond material limits.

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