Solid Ceramic Fasteners

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

Flat Washers U.S. Inch | Metric

stock ceramic flat washer - U.S. InchU.S. inch ceramic flat washers, as with all our ceramic fasteners, are ideally suited for applications requiring robust insulating properties and chemical resistance.

To Order Fasteners:
  1. Find the correct Size
  2. Click-on the Composition you require
  3. Available lengths displayed on next page
U.S. inch flat washer dimensional reference

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

    A B C
Size Com­posi­tion Inside Diam­eter Outside Diam­eter Thickness
#0 alumina .063 - .068 .183 - .188 .022 - .028
ZTA
zirconia
#2 alumina .089 - .094 .245 - .250 .028 - .036
ZTA
zirconia
#4 alumina .120 - .133 .370 - .383 .036 - .045
ZTA
zirconia
#5 alumina .136 - .149 .401 - .414 .036 - .045
ZTA
zirconia
#6 alumina .151 - .164 .433 - .446 .036 - .045
ZTA
zirconia
#8 alumina .183 - .196 .495 - .508 .036 - .045
ZTA
zirconia
#10 alumina .198 - .211 .557 - .570 .036 - .045
ZTA
zirconia
#12 alumina .229 - .242 .620 - .640 .056 - .071
ZTA
zirconia
1/4" alumina .276 - 296 .727 - .749 .056 - .071
ZTA
zirconia
5/16" alumina .339 - .359 .868 - .890 .056 - .071
ZTA
zirconia
3/8" alumina .401 - .421 .993 - 1.015 .056 - .071
ZTA
zirconia
7/16" alumina .464 - .484 1.118 - 1.140 .056 - .071
ZTA
zirconia
1/2" alumina .526 - .546 1.243 - 1.280 .090 - .112
ZTA
zirconia
9/16" alumina .589 - .609 1.462 - 1.499 .090 - .112
ZTA
zirconia
5/8" alumina .649 - .686 1.743 - 1.780 .090 - .112
ZTA
zirconia
3/4" alumina .805 - .842 1.993 - 2.030 .090 - .112
ZTA
zirconia
7/8" alumina .931 - .968 2.243 - 2.280 .146 - .174
ZTA
zirconia
1.0" alumina 1.055 - 1.092 2.493 - 2.530 .146 - .174
ZTA
zirconia

Dimensions Per ANSI B18.22.1-1965 (R2008) Standard

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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