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SAE Flat Washer, Plated

Plated SAE flat washers are used under bolt heads or nuts to increase the bearing surface area, or to offer protection so that the nut or bolt can be rotated without distortion of the bearing surface. Flat washers are also used to give tightness to a joint, to prevent leakage, and especially to distribute pressure under the head of a bolt or nut. Dimensional specifications are governed by ASME B18.21.1. USS (United States Standard) flat washers have a larger outer diameter than SAE (Society of Automotive Engineers) flat washers, and can be utilized in nearly any application. These fasteners are available in zinc plated finish. Zinc plating sacrifices itself, corroding before the base material, offering added corrosion resistance.

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Governing Standards
Dimensional Specifications

Dimensional Specifications

Dimensional SpecificationsSAE Flat Washer

Per ASME B18.21.1-2009
Size	Nominal	A			B			C
		Inside Diameter			Outside Diameter			Thickness
		Basic	Tolerance Plus	Tolerance Minus	Basic	Tolerance Plus	Tolerance Minus	Basic	Max	Min
1/4	0.2500	0.2810	0.0150	0.0050	0.6250	0.0150	0.0070	0.0650	0.0800	0.0510
5/16	0.3125	0.3440	0.0150	0.0050	0.6880	0.0150	0.0070	0.0650	0.0800	0.0510
3/8	0.3750	0.4060	0.0150	0.0050	0.8120	0.0150	0.0070	0.0650	0.0800	0.0510
7/16	0.4375	0.4690	0.0150	0.0050	0.9220	0.0150	0.0070	0.0650	0.0800	0.0510
1/2	0.5000	0.5310	0.0150	0.0050	1.0620	0.0300	0.0070	0.0950	0.1210	0.0740
9/16	0.5625	0.5940	0.0150	0.0050	1.1560	0.0300	0.0070	0.0950	0.1210	0.0740
5/8	0.6250	0.6560	0.0300	0.0070	1.3120	0.0300	0.0070	0.0950	0.1210	0.0740
3/4	0.7500	0.8120	0.0300	0.0070	1.4690	0.0300	0.0070	0.1340	0.1600	0.1080
7/8	0.8750	0.9380	0.0300	0.0070	1.7500	0.0300	0.0070	0.1340	0.1600	0.1080
1	1.0000	1.0620	0.0300	0.0070	2.0000	0.0300	0.0070	0.1340	0.1600	0.1080
1 1/8	1.1250	1.2500	0.0300	0.0070	2.2500	0.0300	0.0070	0.1340	0.1600	0.1080
1 1/4	1.2500	1.3750	0.0300	0.0070	2.5000	0.0300	0.0070	0.1650	0.1920	0.1360
1 3/8	1.3750	1.5000	0.0300	0.0070	2.7500	0.0300	0.0070	0.1650	0.1920	0.1360
1 1/2	1.5000	1.6250	0.0300	0.0070	3.0000	0.0300	0.0070	0.1650	0.1920	0.1360

All dimensions are in inches.

SAE Flat Washer, Plated

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Diameter Inside Diameter Outside Diameter Thickness Item # Availability Price Quantity UOM

1/4

0.2810

0.6250

0.0650

WFPL025SAE

In Stock

$0.02382/EA

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1/4 LOW CARBON STEEL SAE FLAT WASHER, PLATED

$0.02382/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.02382/EA
1090	$0.0223/EA
4350	$0.01989/EA
17370	$0.0131/EA

5/16

0.3440

0.6880

0.0650

WFPL031SAE

In Stock

$0.01868/EA

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5/16 LOW CARBON STEEL SAE FLAT WASHER, PLATED

$0.01868/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.01868/EA
1930	$0.0175/EA
7690	$0.01558/EA
34570	$0.01033/EA

3/8

0.4060

0.8120

0.0650

WFPL037SAE

In Stock

$0.03402/EA

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3/8 LOW CARBON STEEL SAE FLAT WASHER, PLATED

$0.03402/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.03402/EA
1390	$0.03195/EA
5530	$0.02857/EA
24850	$0.01891/EA

7/16

0.4690

0.9220

0.0650

WFPL043SAE

In Stock

$0.05051/EA

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7/16 LOW CARBON STEEL SAE FLAT WASHER, PLATED

$0.05051/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.05051/EA
1090	$0.04738/EA
4330	$0.04205/EA
19450	$0.02821/EA

1/2

0.5310

1.0620

0.0950

WFPL050SAE

In Stock

$0.07485/EA

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1/2 LOW CARBON STEEL SAE FLAT WASHER, PLATED

$0.07485/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.07485/EA
530	$0.07026/EA
2120	$0.06229/EA
9540	$0.04197/EA

9/16

0.5940

1.1560

0.0950

WFPL056SAE

In Stock

$0.10269/EA

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9/16 LOW CARBON STEEL SAE FLAT WASHER, PLATED

$0.10269/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.10269/EA
460	$0.0964/EA
1840	$0.08546/EA
8250	$0.05758/EA

5/8

0.6560

1.3120

0.0950

WFPL062SAE

In Stock

$0.15736/EA

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5/8 LOW CARBON STEEL SAE FLAT WASHER, PLATED

$0.15736/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.15736/EA
360	$0.14783/EA
1410	$0.13085/EA
6310	$0.08889/EA

3/4

0.8120

1.4690

0.1340

WFPL075SAE

In Stock

$0.20539/EA

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3/4 LOW CARBON STEEL SAE FLAT WASHER, PLATED

$0.20539/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.20539/EA
220	$0.19308/EA
880	$0.17075/EA
3960	$0.11667/EA

7/8

0.9380

1.7500

0.1340

WFPL087SAE

In Stock

$0.17248/EA

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7/8 LOW CARBON STEEL SAE FLAT WASHER, PLATED

$0.17248/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.17248/EA
160	$0.16225/EA
610	$0.14333/EA
2740	$0.09866/EA

1.0620

2.0000

0.1340

WFPL100SAE

In Stock

$0.81926/EA

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1 LOW CARBON STEEL SAE FLAT WASHER, PLATED

$0.81926/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.81926/EA
120	$0.77126/EA
460	$0.68079/EA
2070	$0.47096/EA

1 1/8

1.2500

2.2500

0.1340

WFPL112SAE

In Stock

$0.41058/EA

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1 1/8 LOW CARBON STEEL SAE FLAT WASHER, PLATED

$0.41058/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.41058/EA
100	$0.38692/EA
390	$0.34141/EA
1720	$0.23828/EA

1 1/4

1.3750

2.5000

0.1650

WFPL125SAE

In Stock

$0.30954/EA

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1 1/4 LOW CARBON STEEL SAE FLAT WASHER, PLATED

$0.30954/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.30954/EA
70	$0.2917/EA
250	$0.25739/EA
1120	$0.17964/EA

1 1/2

1.6250

3.0000

0.1650

WFPL150SAE

In Stock

$1.51898/EA

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1 1/2 LOW CARBON STEEL SAE FLAT WASHER, PLATED

$1.51898/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$1.51898/EA
50	$1.43298/EA
170	$1.26348/EA
760	$0.88895/EA

SAE Flat Washer, Plated

Technical Data

Governing Standards

Governing StandardsSAE Flat Washer

Dimensional Specifications

Dimensional SpecificationsSAE Flat Washer

Grade

Diameter

Thickness

Outside Diameter

Inside Diameter

1/4 LOW CARBON STEEL SAE FLAT WASHER, PLATED

5/16 LOW CARBON STEEL SAE FLAT WASHER, PLATED

3/8 LOW CARBON STEEL SAE FLAT WASHER, PLATED

7/16 LOW CARBON STEEL SAE FLAT WASHER, PLATED

1/2 LOW CARBON STEEL SAE FLAT WASHER, PLATED

9/16 LOW CARBON STEEL SAE FLAT WASHER, PLATED

5/8 LOW CARBON STEEL SAE FLAT WASHER, PLATED

3/4 LOW CARBON STEEL SAE FLAT WASHER, PLATED

7/8 LOW CARBON STEEL SAE FLAT WASHER, PLATED

1 LOW CARBON STEEL SAE FLAT WASHER, PLATED

1 1/8 LOW CARBON STEEL SAE FLAT WASHER, PLATED

1 1/4 LOW CARBON STEEL SAE FLAT WASHER, PLATED

1 1/2 LOW CARBON STEEL SAE FLAT WASHER, PLATED