Products: Negative CTE Washers
Negative CTE thermal compensating washers and spacers from ALLVAR compensate for the natural expansion and contraction of other materials with variations in temperature. ALLVAR Alloy washers and spacers combat other materials’ thermal displacement to keep constant force loads – whether it’s 80°C or -150°C. Athermalization of fastened assemblies can be achieved by eliminating the thermal changes in clamping force induced by different materials’ CTEs.
ALLVAR is pleased to introduce commercially off-the-shelf (COTS) washers sizes #2, #4, #6, and #8. Other sizes and thickness are available upon request.
Washer Specifications
| Nominal Washer size | Washer Inside Diameter | Washer Outside Diameter | Thickness | Washer Standards | ASME B18.24 Part Number | Item Number | |
|---|---|---|---|---|---|---|---|
|
Nominal Washer Size |
Washer Inner Diameter |
Washer Outer Diameter |
Thickness |
Washer Standard |
ASME B18.22.1 Part No. |
ALLVAR Item No. |
|
|
#2 |
0.094" |
0.250" |
0.032" |
ASME B18.22.1 |
AEW26X08R000GY0A1 |
AW30-0002 |
|
|
#4 |
0.125" |
0.375" |
0.040" |
AEW26X11R000GY0A1 |
AW30-0004 |
||
|
#6 |
0.156" |
0.438" |
0.040"" |
AEW26X13R000GY0A1 |
AW30-0006 |
||
|
#8 |
0.188" |
0.500" |
0.040"" |
AEW26X16R000GY0A1 |
AW30-0008 |
||
|
Other |
Custom |
Custom |
Custom |
N/A |
Custom |
Custom Item |
Custom Washers and Spacers Available
Need pricing for custom washers or spacers? Please fill out the washer order request form and specify nominal washer size, inner diameter, outer diameter, and thickness. An ALLVAR representative will contact you within 2 business days with a quote for your request.
Request a Quote for Washers
Please fill out the following information. We will follow up with a formal quote for the above washers. If custom sizes are needed, please list each in the additional information field.