Flat Washers Black Oxide 18-8 Stainless Steel

Black Oxide Stainless Steel Flat Washers

Chemically Treated Black Oxide Stainless Steel Round Flat Washers


  • Black Oxide flat washers are used mostly on black tools
  • Commonly picked for their sleek black look
  • Used on gun and knife builds, and by car and motorcycle enthusiasts alike
  • Black Oxide Flat Washers are 18-8 stainless steel that are chemically treated to create their black oxide finish

Call our toll-free number for more options and information on Black Oxide Stainless Steel fasteners and custom orders: 866-573-0445


Flat Washer Sizes Inner Diameter (ID) Outer Diameter (OD) Washer Thickness
#2 0.099" 0.250" 0.031"
#4 0.125" 0.312" 0.031"
#6 0.150" 0.312" 0.031"
#8 0.174" 0.375" 0.031"
#10 0.203" 0.437" 0.031"
1/4" 0.281" 5/8" 0.050"
5/16" 0.343" 3/4" 0.050"
3/8" 0.406" 7/8" 0.050"
1/2" 0.531" 1-1/4" 0.062"
5/8" 0.687" 1-1/2" 0.078"
3/4" 0.812" 1-7/8" 0.109"

Select Products Below
Qty
Size
Select Package Quantity
SubTotal
#2
SKU #12290002
#2
SKU #12290002
1
$0.15 (0.15/ea)
25
$2.00 (0.08/ea)
100
$7.00 (0.07/ea)
1000
$60.00 (0.06/ea)
 
#4
SKU #12290014
#4
SKU #12290014
1
$0.15 (0.15/ea)
25
$2.25 (0.09/ea)
100
$8.00 (0.08/ea)
1000
$70.00 (0.07/ea)
 
#6
SKU #12290026
#6
SKU #12290026
1
$0.15 (0.15/ea)
25
$2.25 (0.09/ea)
100
$8.00 (0.08/ea)
1000
$70.00 (0.07/ea)
 
#8
SKU #12290038
#8
SKU #12290038
1
$0.15 (0.15/ea)
25
$2.50 (0.10/ea)
100
$9.00 (0.09/ea)
1000
$70.00 (0.07/ea)
 
#10
SKU #12290050
#10
SKU #12290050
1
$0.15 (0.15/ea)
25
$2.75 (0.11/ea)
100
$10.00 (0.10/ea)
1000
$80.00 (0.08/ea)
 
1/4"
SKU #12290062
1/4"
SKU #12290062
1
$0.15 (0.15/ea)
25
$2.75 (0.11/ea)
100
$10.00 (0.10/ea)
1000
$80.00 (0.08/ea)
 
5/16"
SKU #12290074
5/16"
SKU #12290074
1
$0.15 (0.15/ea)
25
$3.50 (0.14/ea)
100
$12.00 (0.12/ea)
1000
$110.00 (0.11/ea)
 
3/8"
SKU #12290086
3/8"
SKU #12290086
1
$0.17 (0.17/ea)
25
$4.00 (0.16/ea)
100
$14.00 (0.14/ea)
1000
$120.00 (0.12/ea)
 
1/2"
SKU #12290098
1/2"
SKU #12290098
1
$0.32 (0.32/ea)
25
$7.50 (0.30/ea)
100
$27.00 (0.27/ea)
1000
$230.00 (0.23/ea)
 
5/8"
SKU #12290110
5/8"
SKU #12290110
1
$0.63 (0.63/ea)
25
$14.25 (0.57/ea)
100
$52.00 (0.52/ea)
1000
$440.00 (0.44/ea)
 
3/4"
SKU #12290122
3/4"
SKU #12290122
1
$1.65 (1.65/ea)
25
$37.75 (1.51/ea)
100
$138.00 (1.38/ea)
1000
$1,170.00 (1.17/ea)