Inch Size Alumina Shoulder Washers

Inch size Alumina shoulder washers (also called ceramic hat washers) electrically help to isolate components from one another. For instance, you can isolate one sample holder from another sample holder . Available in standard screw sizes. Made from 99.7%+ Al2O3 (alumina), these non-porous washers are fully vacuum compatible and bakable to over 400oC.

Can't find the exact size or shape you need? Please fill out our Custom Size Quote Form. We welcome custom product and fabrication projects.

Sort by
Display per page
Picture of 11052-1010

11052-1010

Item Name: Alumina Washer Shoulder for # 0 Screw
Screw Size: 0
(A) Large Diameter: 1/4
(B) Small Diameter: 0.154
(C) Small Diameter Thickness: 0.030
(D) Total Thickness: 0.062
(H) Inner Diameter: 0.060
Material Purity: Alumina Oxide Ceramic (Al2O3) 99.8% Pure (AD 998)
Picture of 11052-1020

11052-1020

Item Name: Alumina Washer Shoulder for # 1 screw
Screw Size: 1
(A) Large Diameter: 1/4
(B) Small Diameter: 0.154
(C) Small Diameter Thickness: 0.030
(D) Total Thickness: 0.062
(H) Inner Diameter: 0.073
Material Purity: Alumina Oxide Ceramic (Al2O3) 99.8% Pure (AD 998)
Picture of 11052-1030

11052-1030

Item Name: Alumina Washer Shoulder for # 2 Screw
Screw Size: 2
(A) Large Diameter: 0.281
(B) Small Diameter: 0.169
(C) Small Diameter Thickness: 0.030
(D) Total Thickness: 0.078
(H) Inner Diameter: 0.086
Material Purity: Alumina Oxide Ceramic (Al2O3) 99.8% Pure (AD 998)
Picture of 11052-1040

11052-1040

Item Name: Alumina Washer Shoulder for # 4 Screw
Screw Size: 4
(A) Large Diameter: 0.354
(B) Small Diameter: 0.249
(C) Small Diameter Thickness: 0.030
(D) Total Thickness: 0.078
(H) Inner Diameter: 0.112
Material Purity: Alumina Oxide Ceramic (Al2O3) 99.8% Pure (AD 998)
Picture of 11052-1050

11052-1050

Item Name: Alumina Washer Shoulder for # 5 Screw
Screw Size: 5
(A) Large Diameter: 0.440
(B) Small Diameter: 0.279
(C) Small Diameter Thickness: 0.046
(D) Total Thickness: 0.093
(H) Inner Diameter: 0.125
Material Purity: Alumina Oxide Ceramic (Al2O3) 99.8% Pure (AD 998)
Picture of 11052-1060

11052-1060

Item Name: Alumina Washer Shoulder for # 6 Screw
Screw Size: 6
(A) Large Diameter: 0.468
(B) Small Diameter: 0.310
(C) Small Diameter Thickness: 0.046
(D) Total Thickness: 0.093
(H) Inner Diameter: 0.138
Material Purity: Alumina Oxide Ceramic (Al2O3) 99.8% Pure (AD 998)
Picture of 11052-1070

11052-1070

Item Name: Alumina Washer Shoulder for # 8 Screw
Screw Size: 8
(A) Large Diameter: 1/2
(B) Small Diameter: 0.341
(C) Small Diameter Thickness: 0.062
(D) Total Thickness: 0.125
(H) Inner Diameter: 0.164
Material Purity: Alumina Oxide Ceramic (Al2O3) 99.8% Pure (AD 998)
Picture of 11052-1080

11052-1080

Item Name: Alumina Washer Shoulder for #10 Screw
Screw Size: 10
(A) Large Diameter: 0.562
(B) Small Diameter: 0.373
(C) Small Diameter Thickness: 0.062
(D) Total Thickness: 0.125
(H) Inner Diameter: 0.190
Material Purity: Alumina Oxide Ceramic (Al2O3) 99.8% Pure (AD 998)