Flat Washers Aluminum

Aluminum Flat Washers

Standard Round Washers in 2024-T4 Aluminum Alloy


An aluminum, or aluminium, flat washer is a round outer diameter thin plate with a center hole (inner diameter) punched to the size of the bolt or screw diameter.

  • Used to distribute fastener pressure evenly
  • Can act as a flat surface area for nut or bolt to tighten against
  • Washer Specifications may vary +/- .007 depending on production run
  • IFI Tolerances Apply

Aluminum flat washers are corrosion resistant, lightweight, and non-magnetic. Our aluminum washers are made of 2024-T4 Aluminum Alloy which is a high strength aluminum alloy with good fatigue resistence and strength-to-weight ratio. Note that, while aluminum 2024-T4 is resistant to atmospheric corrosion, it is not as corrosive resistant as stainless steel and is ill suited for marine enviroments.

Important: We recommend not mixing metals; aluminum fasteners should be used with aluminum fasteners. For more information, please read our article on the subject HERE.


Flat Washer Sizes Inner Diameter (ID) Outer Diameter (OD) Washer Thickness
#6 0.149" 0.375" 0.031"
#8 0.174" 0.375" 0.031"
#10 0.203" 0.437" 0.031"
1/4" 0.265" 0.687" 0.045"
5/16" 0.343" 0.750" 0.062"
3/8" 0.406" 0.875" 0.062"
1/2" 0.562" 1.250" 0.078"
5/8" 0.687" 1.500" 0.078"
3/4" 0.812" 1.875" 0.091"
Select Products Below See Product Specifications

NA = "Not Sold In Single Quantity"

Size
Select Package Quantity
SubTotal
Aluminum Flat Washers - #6
SKU #1000-106-002
Aluminum Flat Washers - #6
SKU #1000-106-002
1
NA
25
$2.25 (0.09/ea)
100
$8.00 (0.08/ea)
1000
$60.00 (0.06/ea)
Subtotal: $0.00 /
Aluminum Flat Washers - #8
SKU #1000-106-004
Aluminum Flat Washers - #8
SKU #1000-106-004
1
NA
25
$2.25 (0.09/ea)
100
$8.00 (0.08/ea)
1000
$60.00 (0.06/ea)
Subtotal: $0.00 /
Aluminum Flat Washers - #10
SKU #1000-106-006
Aluminum Flat Washers - #10
SKU #1000-106-006
1
NA
25
$2.00 (0.08/ea)
100
$7.00 (0.07/ea)
1000
$60.00 (0.06/ea)
Subtotal: $0.00 /
Aluminum Flat Washers - 1/4"
SKU #1000-106-008
Aluminum Flat Washers - 1/4"
SKU #1000-106-008
1
NA
25
$2.50 (0.1/ea)
100
$9.00 (0.09/ea)
1000
$70.00 (0.07/ea)
Subtotal: $0.00 /
Aluminum Flat Washers - 5/16"
SKU #1000-106-010
Aluminum Flat Washers - 5/16"
SKU #1000-106-010
1
NA
25
$2.75 (0.11/ea)
100
$10.00 (0.1/ea)
1000
$80.00 (0.08/ea)
Subtotal: $0.00 /
Aluminum Flat Washers - 3/8"
SKU #1000-106-012
Aluminum Flat Washers - 3/8"
SKU #1000-106-012
1
NA
25
$4.75 (0.19/ea)
100
$17.00 (0.17/ea)
1000
$150.00 (0.15/ea)
Subtotal: $0.00 /
Aluminum Flat Washers - 1/2"
SKU #1000-106-014
Aluminum Flat Washers - 1/2"
SKU #1000-106-014
1
NA
25
$10.50 (0.42/ea)
100
$37.00 (0.37/ea)
1000
$340.00 (0.34/ea)
Subtotal: $0.00 /
Aluminum Flat Washers - 5/8"
SKU #1000-106-016
Aluminum Flat Washers - 5/8"
SKU #1000-106-016
1
NA
25
$14.25 (0.57/ea)
100
$51.00 (0.51/ea)
1000
$470.00 (0.47/ea)
Subtotal: $0.00 /
Aluminum Flat Washers - 3/4"
SKU #1000-106-018
Aluminum Flat Washers - 3/4"
SKU #1000-106-018
1
$1.26 (1.26/ea)
25
$29.50 (1.18/ea)
100
$109.00 (1.09/ea)
1000
$1,000.00 (1/ea)
Subtotal: $0.00 /

Product Specifications
Material
Aluminum
System of Measurement (Unit)
Inch
Tolerance (IFI)
Actual measurements may vary slightly +/- depending on production run within IFI Tolerances