What is the difference between flat washers and lock washers?

Flat washers are ideal for increasing surface area and distributing the applied force when tightening a fastener. They can be used on the fastener's bolt & nut sides, or used as spacers when using a bolt may not be appropriate. Lock washers produce tension during tightening to control the loosening of nuts. They are commonly used on the fastener's nut side for applications involving vibrations.

How to install a flat washer?

Place the flat washer between the threaded fastener (like a nut) and the screw / bolt head. Make sure that the washer presses against the fastener & other adjacent surfaces to form a tight connection. Press the fastener down to lock the grooves of a serrated washer with the grooves of the nut. Use a wrench or ratchet to tighten the nut / threaded fastener. Ensure that the teeth of a serrated washer are covered completely by the nut / fastener head, or that a split washer is slightly out of alignment. This indicates tension on the threaded fastener. Users may loosen the nut / threaded fastener to adjust the washer if it is not operating correctly.

How to remove a flat washer?

Simply remove the nut / threaded fastener that is holding the washer in place using a vice-grip or pipe wrench.Use a flat screwdriver to pry a lock washer off. When removing a split washer, the screwdriver head should be placed inside the split or beneath the washer and pushed. When removing a washer having teeth, the screwdriver head should be placed under a tooth and pushed up, repeating the procedure with more teeth if required. For other flat washer types, the screwdriver head can be placed below the washer and pushed up. The washer may break during removal, depending on the amount of pressure being applied.If the flat washer does not budge, use penetrating oil and repeat the previous step.Some flat washers can be used multiple times easily. Other washers (split lock) can be used only 1 or 2 times. Users should not reuse a split flat washer or other damaged washers. Do not use old washers in high-stress joint applications.

Flat Washers- Page 2 |

APPROVED VENDOR -

18-8 Stainless Steel Flat Washer

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

V

W

X

Y

Style	Model	Fits Bolt Sizes	Inside Dia.	Outside Dia.	Package Weight	Rockwell Hardness	Thickness	Thickness Tolerance	Type	Price (ex. VAT)
A	U51410.011.0002	#4	1/8"	5/16"	-	-	0.031"	-	Standard	€2.92
B	WAS404#4	#4	1/8"	5/16"	0.2	B70	0.025 to 0.04"	-	Standard	€5.64
C	Z0538-188	#4	1/8"	5/16"	-	B70	0.032"	+/-0.07"	Standard	€4.20
D	U51410.013.0003	#6	5/32"	3/8"	-	-	0.031"	-	Standard	€7.57
E	WAS404#6	#6	5/32"	3/8"	0.4	B70	0.036 to 0.065"	-	Standard	€3.23
F	U51410.013.0001	#6	5/32"	3/8"	-	-	0.049"	-	Standard	€1.46
G	Z0539-188	#6	5/32"	3/8"	-	B70	0.032"	+/-0.010"	Standard	€16.99
H	U51410.016.0002	#8	3/16"	7/16"	-	-	0.049"	-	Standard	€1.70
I	Z0540-188	#8	11/64"	3/8"	-	B70	0.032"	+/-0.010"	Standard	€4.32
J	WAS404#8	#8	3/16"	7/16"	0.4	B70	0.036 to 0.065"	-	Standard	€21.52
K	Z0541-188	#10	13/64"	7/16"	-	B70	0.032"	+/-0.010"	Standard	€19.71
L	WAS404#10	#10	7/32"	1/2"	0.8	B70	0.036 to 0.065"	-	Standard	€9.23
M	U51410.019.0002	#10	7/32"	1/2"	-	-	0.049"	-	Standard	€5.92
N	WAS504#10	#10	1/4"	9/16"	0.1	B70	0.036 to 0.065"	-	Standard	€10.08
O	U51410.021.0002	#12	1/4"	1/2"	-	-	0.047"	-	Standard	€12.44
P	WAS404#12	#12	1/4"	9/16"	0.15	B70	0.051 to 0.08"	-	Standard	€14.71
Q	Z0542-188	#12	1/4"	1/2"	-	B70	0.045"	+/-0.005"	Standard	€7.44
R	U51410.021.0001	#12	1/4"	9/16"	-	-	0.065"	-	Standard	€9.91
S	WAS40401	1"	1-1/16"	2"	0.1	B70	0.108 to 0.16"	-	Standard	€8.36
T	Z0623-188	1"	1-1/16"	2"	-	B70	0.11"	+/-0.010"	Standard	€32.57
U	U51205.100.0001	1"	1-1/16"	2"	-	-	0.134"	-	Narrow	€4.73
V	WAS50401	1"	1-1/16"	2.5"	0.03	B70	0.136 to 0.192"	-	Standard	€12.40
W	U51205.150.0001	1.5"	1.625"	3"	-	-	0.165"	-	Narrow	€11.88
X	Z0626-188	1.5"	1-9/16"	3.25"	-	B70	0.125"	+/-0.010"	Standard	€48.02
Y	U51205.125.0001	1.25"	1.375"	2.5"	-	-	0.165"	-	Narrow	€8.74

APPROVED VENDOR -

Through Hardened Steel Thick Washer

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Style	Model	Fits Bolt Sizes	Inside Dia.	Outside Dia.	Thickness	Thickness Tolerance	Price (ex. VAT)
A	Z9279	1"	1-1/16"	2"	1/4"	+0.014/-0.015"	€38.90
B	Z9283	1.5"	1-9/16"	3"	1/4"	+0.014/-0.015"	€7.70
C	Z9281	1.25"	1.375"	2.5"	1/4"	+0.014/-0.015"	€76.42
D	Z9280	1.125"	1.187"	2.25"	1/4"	+0.014/-0.015"	€50.60
E	Z9282	1.375"	1.437"	2.75"	1/4"	+0.014/-0.015"	€37.70
F	U38405.050.0001	1/2"	17/32"	1 1/16"	13/64"	+0.005/-0.013"	€52.34
G	Z9270	1/4"	9/32"	5/8"	3/32"	+0.015/-0.004"	€21.49
H	Z9277	3/4"	13/16"	1 15/32"	7/32"	+0.011/-0.012"	€19.16
I	2KKF5	3/8"	13/32"	13/16"	1/8"	+0.001/-0.015"	€7,155.56
J	Z9272	3/8"	13/32"	13/16"	1/8"	+0.001/-0.015"	€220.51
K	Z9276	5/8"	21/32"	1 5/16"	7/32"	+0.011/-0.012"	€63.62
L	2KKF4	5/16"	11/32"	11/16"	3/32"	+0.015/-0.004"	€3,437.77
M	Z9271	5/16"	11/32"	11/16"	3/32"	+0.015/-0.004"	€56.50
N	Z9278	7/8"	15/16"	1.75"	1/4"	+0.014/-0.015"	€39.49
O	Z9273	7/16"	15/32"	59/64"	1/8"	+0.001/-0.015"	€19.85
P	Z9275	9/16"	19/32"	1 11/64"	11/64"	+0.020/-0.003"	€42.58

APPROVED VENDOR -

18-8 Stainless Steel Thick Fender Washer

A

B

C

D

E

F

G

H

I

J

K

L

M

N

Style	Model	Fits Bolt Sizes	Inside Dia.	Outside Dia.	Thickness	Thickness Tolerance	Price (ex. VAT)
A	Z9678SS	#10	7/32"	1"	1/8"	+/-0.015"	€8.66
B	Z9696SS	1"	1-1/16"	3.5"	1/8"	+/-0.015"	€48.97
C	Z9675SS	1.25"	1.375"	4"	1/2"	+/-0.050"	€111.27
D	Z9688SS	1/2"	17/32"	2"	1/8"	+/-0.015"	€10.24
E	Z9689SS	1/2"	17/32"	2"	1/4"	+/-0.025"	€23.27
F	Z9680SS	1/4"	9/32"	1.5"	1/8"	+/-0.015"	€8.80
G	Z9693SS	3/4"	13/16"	3"	1/4"	+/-0.025"	€36.43
H	Z9684SS	3/8"	13/32"	2"	1/8"	+/-0.015"	€9.92
I	Z9685SS	3/8"	13/32"	2"	1/4"	+/-0.025"	€24.71
J	Z9690SS	5/8"	11/16"	2.5"	1/8"	+/-0.015"	€12.61
K	Z9691SS	5/8"	11/16"	2.5"	1/4"	+/-0.025"	€26.72
L	Z9682SS	5/16"	11/32"	2"	1/8"	+/-0.015"	€9.20
M	Z9683SS	5/16"	11/32"	2"	1/4"	+/-0.025"	€23.16
N	Z9695SS	7/8"	15/16"	3.25"	1/4"	+/-0.025"	€41.56

APPROVED VENDOR -

18-8 Stainless Steel Thick Washer

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

V

W

X

Y

Style	Model	Fits Bolt Sizes	Inside Dia.	Outside Dia.	Thickness	Thickness Tolerance	Price (ex. VAT)
A	Z9150	#0	1/16"	1/8"	1/64"	+/-0.010"	€10.48
B	Z9151	#1	5/64"	5/32"	1/64"	+/-0.010"	€9.61
C	Z9152	#2	3/32"	3/16"	1/32"	+/-0.010"	€8.68
D	Z9154	#4	1/8"	1/4"	1/16"	+/-0.010"	€11.04
E	Z9085SS	#4	1/8"	5/16"	5/64"	+/-0.010"	€18.55
F	Z9156	#6	5/32"	5/16"	1/16"	+/-0.010"	€10.15
G	Z9086SS	#6	5/32"	3/8"	5/64"	+/-0.010"	€17.28
H	Z9158	#8	11/64"	3/8"	1/16"	+/-0.010"	€10.03
I	Z9160	#8	3/16"	7/16"	5/64"	+/-0.010"	€10.99
J	Z9094SS	#10	13/64"	1/2"	3/32"	+/-0.010"	€18.57
K	Z9103SS	1"	1.031"	2"	3/16"	+/-0.010"	€9.82
L	Z9105SS	1.25"	1-9/32"	2.5"	9/32"	+/-0.010"	€10.71
M	Z9104SS	1.125"	1.156"	2.25"	7/32"	+/-0.010"	€10.62
N	Z9099SS	1/2"	17/32"	1.125"	1/8"	+/-0.010"	€20.96
O	Z9161	1/4"	9/32"	1/2"	5/64"	+/-0.010"	€11.35
P	Z9095SS	1/4"	9/32"	5/8"	1/8"	+/-0.010"	€11.86
Q	Z9101SS	3/4"	25/32"	1.625"	1/8"	+/-0.010"	€28.79
R	Z9163	3/8"	13/32"	3/4"	3/32"	+/-0.010"	€14.04
S	Z9097SS	3/8"	13/32"	7/8"	1/8"	+/-0.010"	€14.77
T	Z9100SS	5/8"	21/32"	1.375"	1/8"	+/-0.010"	€28.03
U	Z9130	5/16"	11/32"	11/16"	3/32"	+/-0.010"	€11.31
V	Z9162	5/16"	11/32"	5/8"	3/32"	+/-0.010"	€10.82
W	Z9096SS	5/16"	11/32"	3/4"	1/8"	+/-0.010"	€8.60
X	Z9102SS	7/8"	29/32"	1.75"	5/32"	+/-0.010"	€31.98
Y	Z9098SS	7/16"	15/32"	1"	1/8"	+/-0.010"	€13.82

APPROVED VENDOR -

18-8 Stainless Steel Fender Washer

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

V

W

X

Y

Style	Model	Fits Bolt Sizes	Inside Dia.	Outside Dia.	Package Weight	Size	Thickness	Thickness Tolerance	Type	Price (ex. VAT)
A	U51530.013.0002	#6	5/32"	9/16"	-	-	0.047"	-	Fender	€10.99
B	Z0448-188	#6	9/64"	5/8"	0.15 Lbs.	-	0.031"	+/-0.007	Standard	€6.75
C	U51530.013.0001	#6	1/8"	5/8"	-	-	0.031"	-	Fender	€2.32
D	Z0449-188	#6	5/32"	9/16"	0.18 Lbs.	-	0.047"	+/-0.007	Standard	€12.83
E	U51530.012.0075	#8	5/32"	3/4"	-	-	0.047"	-	Fender	€3.45
F	Z0451-188	#8	3/16"	3/4"	0.33 Lbs.	-	0.05"	+/-0.007	Standard	€15.94
G	Z0450-188	#8	11/64"	3/4"	0.32 Lbs.	-	0.04"	+/-0.007	Standard	€6.94
H	U51530.018.0125	#10	7/32"	1.25"	-	-	0.047"	-	Standard	€10.58
I	Z0456-188	#10	7/32"	1.25"	0.90 Lbs.	-	0.05"	+/-0.007	Standard	€13.50
J	U51530.019.0002	#10	3/16"	11/16"	-	-	0.047"	-	Fender	€3.80
K	Z0455-188	#10	13/64"	3/4"	0.35 Lbs.	-	0.04"	+/-0.007	Standard	€8.09
L	U51530.018.0075	#10	3/16"	3/4"	-	-	0.047"	-	Fender	€4.04
M	U51530.018.0100	#10	3/16"	1"	-	-	0.047"	-	Fender	€7.64
N	Z0453-188	#10	13/64"	11/16"	0.26 Lbs.	-	0.04"	+/-0.007	Standard	€6.35
O	U51530.019.0001	#10	3/16"	1/2"	-	-	0.047"	-	Fender	€2.34
P	Z0452-188	#10	13/64"	1/2"	0.13 Lbs.	-	0.04"	+/-0.007	Standard	€4.75
Q	Z0454-188	#10	13/64"	1"	0.60 Lbs.	-	0.04"	+/-0.007	Standard	€10.48
R	U51530.050.0150	1/2"	17/32"	1.5"	-	-	0.063"	-	Standard	€9.23
S	U51530.050.0200	1/2"	17/32"	2"	-	-	0.063"	-	Standard	€16.57
T	Z0473-188	1/2"	17/32"	2"	2.15 Lbs.	1/2"	0.062"	+/-0.010"	Standard	€14.45
U	Z0472-188	1/2"	17/32"	1.5"	1.15 Lbs.	1/2"	0.062"	+/-0.010"	Standard	€8.95
V	U51530.025.0150	1/4"	9/32"	1.5"	-	-	0.063"	-	Standard	€14.17
W	Z0458-188	1/4"	17/64"	9/16"	0.20 Lbs.	1/4"	0.063"	+/-0.007	Standard	€5.76
X	U51530.025.0002	1/4"	9/32"	9/16"	-	-	0.063"	-	Standard	€21.52
Y	U51530.025.0087	1/4"	9/32"	7/8"	-	-	0.063"	-	Standard	€5.72

APPROVED VENDOR -

Case Hardened Steel Flat Washer

A

B

C

Style	Model	Fits Bolt Sizes	Inside Dia.	Outside Dia.	Thickness	Price (ex. VAT)
A	U38403.100.0001	1"	1.031"	2"	0.188"	€5.20
B	U38403.125.0001	1.25"	1-9/32"	2.5"	0.281"	€7.34
C	U38403.112.0001	1.125"	1.156"	2.25"	0.219"	€8.91

APPROVED VENDOR -

Steel Thru Hardened Flat Washer

A

B

C

D

E

F

G

H

Style	Model	Fits Bolt Sizes	Inside Dia.	Outside Dia.	Thickness	Price (ex. VAT)
A	U38405.137.0001	1.375"	1.437"	2.75"	0.25"	€10.71
B	U38405.025.0001	1/4"	9/32"	5/8"	0.094"	€6.26
C	U38405.037.0001	3/8"	13/32"	13/16"	0.125"	€9.54
D	U38405.062.0001	5/8"	21/32"	1 5/16"	0.219"	€11.41
E	U38405.031.0001	5/16"	11/32"	11/16"	0.094"	€4.38
F	U38405.087.0001	7/8"	15/16"	1.75"	0.25"	€15.35
G	U38405.043.0001	7/16"	15/32"	29/32"	0.125"	€5.27
H	U38405.056.0001	9/16"	19/32"	1.156"	0.172"	€6.67

APPROVED VENDOR -

Steel Square Washer

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

Style	Model	Finish	Fits Bolt Sizes	Inside Dia.	Outside Dia.	Package Weight	Rockwell Hardness	Size	Thickness	Price (ex. VAT)
A	Z8950D	Galvanized	1/4"	5/16"	2"	-	B49	-	1/4"	€15.35
B	Z8954D	Galvanized	1/2"	9/16"	2"	-	B49	-	1/4"	€15.97
C	Z8884-HDG	Galvanized	1"	1-1/16"	3"	0.61	B40	1"	1/4"	€12.81
D	Z8883-HDG	Galvanized	7/8"	15/16"	3"	0.61	B40	7/8"	1/4"	€13.43
E	Z8948G	Galvanized	3/4"	13/16"	3"	0.61	B40	3/4"	1/4"	€17.43
F	Z8947G	Galvanized	3/4"	13/16"	3"	0.61	B40	3/4"	3/16"	€16.26
G	Z8881-HDG	Galvanized	5/8"	11/16"	3"	0.61	B40	5/8"	1/4"	€13.00
H	Z8956D	Galvanized	5/8"	11/16"	2"	-	B49	-	1/4"	€15.97
I	Z8958D	Galvanized	3/4"	13/16"	2"	-	B49	-	1/4"	€16.69
J	Z8952D	Galvanized	3/8"	7/16"	2"	-	B49	-	1/4"	€15.35
K	Z8895-HDG	Galvanized	1"	1-1/16"	4"	1.07	B40	1"	1/4"	€26.35
L	Z8893-HDG	Galvanized	3/4"	13/16"	4"	1.07	B40	3/4"	1/4"	€23.98
M	Z8892-HDG	Galvanized	5/8"	11/16"	4"	1.07	B40	5/8"	1/4"	€26.04
N	Z8880-HDG	Galvanized	1/2"	9/16"	3"	0.61	B40	1/2"	1/4"	€17.17
O	Z8962D	Galvanized	1"	1-1/16"	2"	-	B49	-	1/4"	€16.69
P	Z8894-HDG	Galvanized	7/8"	15/16"	4"	1.07	B40	7/8"	1/4"	€26.35
Q	Z8882-HDG	Hot Dipped Galvanized	3/4"	13/16"	3"	0.61	B40	3/4"	1/4"	€13.00	RFQ

APPROVED VENDOR -

Steel Fender Washer

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

V

W

X

Y

Style	Model	Fits Bolt Sizes	Inside Dia.	Outside Dia.	Package Weight	Rockwell Hardness	Size	Thickness	Thickness Tolerance	Price (ex. VAT)
A	U38210.012.0062	#6	1/8"	5/8"	-	-	-	0.031"	-	€2.21
B	U38210.012.0075	#6	5/32"	3/4"	-	-	-	0.051"	+0.029"	€3.82
C	Z0480	#6	5/32"	3/4"	0.05 Lbs.	B40	-	0.051"	+/-0.015"	€2.61
D	Z0448	#6	9/64"	5/8"	0.14 Lbs.	B40	-	0.031"	+/-0.005"	€4.34
E	Z0449	#6	5/32"	9/16"	0.17 Lbs.	B40	-	0.047"	+/-0.005"	€2.15
F	Z0448-316	#6	9/64"	5/8"	0.15 Lbs.	B80	-	0.031"	+/-0.007	€5.35
G	U38160.016.0001	#8	3/16"	3/4"	-	-	-	0.051"	+0.029"	€2.86
H	Z0481	#8	3/16"	1"	0.09 Lbs.	B40	-	0.051"	+/-0.015"	€3.10
I	Z0450	#8	11/64"	3/4"	0.31 Lbs.	B40	-	0.047"	+/-0.004"	€8.77
J	Z0451	#8	3/16"	3/4"	0.30 Lbs.	B40	-	0.047"	+/-0.005"	€6.12
K	Z0627	#10	13/64"	3/4"	-	B40 to B50	-	0.051"	+0.029"	€10.42
L	Z0628	#10	7/32"	3/4"	-	B40 to B50	-	0.051"	+0.029"	€13.48
M	U38160.019.0008	#10	7/32"	1"	-	-	-	0.125"	-	€33.91
N	U38210.018.0150	#10	7/32"	1.5"	-	-	-	0.047"	-	€10.13
O	Z0482	#10	7/32"	1.5"	0.21 Lbs.	B40	-	0.051"	+/-0.015"	€4.01
P	Z0453	#10	13/64"	11/16"	0.25 Lbs.	B40	-	0.047"	+/-0.004"	€9.27
Q	U38210.018.0075	#10	7/32"	3/4"	-	-	-	0.047"	-	€4.65
R	Z0452	#10	13/64"	1/2"	0.12 Lbs.	B40	-	0.047"	+/-0.005"	€5.02
S	Z0455	#10	13/64"	3/4"	0.30 Lbs.	B40	-	0.047"	+/-0.004"	-	RFQ
T	Z0456	#10	7/32"	1.25"	0.87 Lbs.	B40	-	0.047"	+/-0.005"	€5.01
U	Z0454	#10	13/64"	1"	0.55 Lbs.	B40	-	0.047"	+/-0.005"	€7.10
V	U38160.019.0009	#10	7/32"	1"	-	-	-	0.25"	-	€31.57
W	U38160.100.0001	1"	1-1/16"	3.25"	-	-	-	0.25"	-	€12.67
X	U38160.100.0003	1"	1-1/16"	3.5"	-	-	-	0.25"	-	€18.48
Y	U38160.100.0002	1"	1-1/16"	3.5"	-	-	-	0.125"	-	€10.74

GRAINGER -

Carbon Steel Fender Washer

A

B

C

D

E

F

G

H

Style	Model	Fits Bolt Sizes	Inside Dia.	Outside Dia.	Package Weight	Size	Price (ex. VAT)
A	U38210.050.0125	1/2"	0.535"	1.25"	0.91 Lbs.	1/2 x 1 1/4"	€4.41
B	U38210.050.0175	1/2"	0.535"	1.75"	1.40 Lbs.	1/2 x 1 3/4"	€59.22
C	U38210.050.0250	1/2"	0.535"	2.5"	3.70 Lbs.	1/2 x 2 1/2"	€20.86
D	U38210.025.0175	1/4"	0.285"	1.75"	3.02 Lbs.	1/4 x 1 3/4"	€18.71
E	U38210.037.0175	3/8"	0.410"	1.75"	3.08 Lbs.	3/8 x 1 3/4"	€123.65
F	U38210.031.0100	5/16"	0.348"	1"	1.15 Lbs.	5/16 x 1"	€7.01
G	U38210.031.0175	5/16"	0.348"	1.75"	4.03 Lbs.	5/16 x 1 3/4"	€20.34
H	U38210.031.0087	5/16"	0.348"	7/8"	0.90 Lbs.	5/16 x 7/8"	€5.62

APPROVED VENDOR -

Steel Beveled Washer

A

B

C

D

E

F

G

H

I

J

K

L

Style	Model	Fits Bolt Sizes	Inside Dia.	Outside Dia.	Thickness	Price (ex. VAT)
A	Z9180-BEV	#10	13/64"	1/2"	3/32"	€15.87
B	Z9189-BEV	1"	1.031"	2"	5/16"	€5.51
C	Z9191-BEV	1.25"	1-9/32"	2.25"	5/16"	€7.86
D	Z9190-BEV	1.125"	1.156"	2.25"	5/16"	€7.20
E	Z9185-BEV	1/2"	17/32"	1"	3/16"	€18.23
F	Z9181-BEV	1/4"	9/32"	5/8"	1/8"	€10.34
G	Z9187-BEV	3/4"	25/32"	1.5"	1/4"	€43.82
H	Z9183-BEV	3/8"	13/32"	7/8"	1/8"	€13.77
I	Z9186-BEV	5/8"	21/32"	1.25"	1/4"	€28.28
J	Z9182-BEV	5/16"	11/32"	3/4"	1/8"	€14.67
K	Z9188-BEV	7/8"	29/32"	1.75"	1/4"	€22.18
L	Z9184-BEV	7/16"	15/32"	1"	5/32"	€18.21

COOPER B-LINE -

Washer Splice Kits

A

Style	Model
A	WASHER SPL KIT	RFQ
A	WASHER SPL KIT SS	RFQ
A	WASHER SPL KIT BLE	RFQ

COOPER B-LINE -

B450 Series U Washers

A

Style	Model
A	B450-1/2GRN	RFQ
A	B450-3/8HDG	RFQ
A	B450-5/8GRN	RFQ
A	B450-5/8ZN	RFQ
A	B450-1/2ZN	RFQ
A	B450-1/4GRN	RFQ
A	B450-1/2HDG	RFQ
A	B450-1/2SS4	RFQ
A	B450-1/4ZN	RFQ
A	B450-3/4GRN	RFQ
A	B450-3/4ZN	RFQ
A	B450-3/8GRN	RFQ
A	B450-3/8ZN	RFQ
A	B450-3/8SS4	RFQ
A	B450-3/8YZN	RFQ
A	B450-5/8YZN	RFQ

COOPER B-LINE -

Flat Fender Washers

A

Style	Model
A	1/2X2FFWZN	RFQ
A	1/4X11/2FFWZN	RFQ
A	1/4X11/4FFWZN	RFQ
A	3/8X11/2FFWZN	RFQ
A	3/8X1 1/4 FFW YZN	RFQ
A	3/8X11/4FFWZN	RFQ

COOPER B-LINE -

Washers

A

B

Style	Model
A	SUPT WASHER SS	RFQ
A	SUPT WASHER BLE	RFQ
B	TOP WASHER	RFQ

GORLITZ -

Lock Washers

A

Style	Model	Price (ex. VAT)
A	T01 125	€0.40	RFQ
A	T01A 125	€0.40	RFQ

GORLITZ -

Flat Washers

A

Style	Model	Price (ex. VAT)
A	T01 124	€0.40	RFQ
A	T01A 124	€0.40	RFQ

PS DOORS -

Flat Washers

A

Style	Model	Finish	Material	Size
A	512986	-	-	5/16" x 1 1/4"	RFQ
A	501949	Hot Dipped Galvanized	Steel	5/16"	RFQ
A	500296	Mill Finish	Stainless Steel	3/8"	RFQ
A	508053	Mill Finish	Stainless Steel	5/16"	RFQ
A	501945	Mill Finish	Stainless Steel	3/8"	RFQ
A	501948	Mill Finish	Stainless Steel	5/16"	RFQ
A	501955	Powder Coated Yellow	Steel	0.4" x 1" x 0.06"	RFQ
A	501939	Powder Coated Yellow	Steel	1/4"	RFQ
A	501947	Powder Coated Yellow	Steel	3/8"	RFQ
A	508032	Stainless Steel	Steel	1/4"	RFQ

GRAINGER -

Steel Fender Washer, Plain Fastener Finish

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

V

W

X

Y

Style	Model	Fits Bolt Sizes	Inside Dia.	Outside Dia.	Price (ex. VAT)
A	U38213.050.0200	1/2"	17/32"	2"	€22.32
B	U38213.050.0300	1/2"	17/32"	3"	€57.21
C	U38213.050.0150	1/2"	17/32"	1.5"	€12.16
D	U38213.025.0125	1/4"	9/32"	1.25"	€10.44
E	U38213.025.0100	1/4"	9/32"	1"	€5.12
F	U38213.025.0087	1/4"	9/32"	7/8"	€17.23
G	U38213.025.0250	1/4"	9/32"	2.5"	€116.46
H	U38213.025.0300	1/4"	9/32"	3"	€109.92
I	U38213.025.0150	1/4"	9/32"	1.5"	€21.11
J	U38213.025.0200	1/4"	9/32"	2"	€131.18
K	U38213.012.0062	1/8"	5/32"	5/8"	€24.79
L	U38213.012.0075	1/8"	5/32"	3/4"	€25.12
M	U38213.037.0125	3/8"	13/32"	1.25"	€18.05
N	U38213.037.0162	3/8"	13/32"	1.625"	€93.78
O	U38213.037.0150	3/8"	13/32"	1.5"	€21.24
P	U38213.037.0300	3/8"	13/32"	3"	€70.55
Q	U38213.037.0200	3/8"	13/32"	2"	€166.67
R	U38213.018.0125	3/16"	3/16"	1.25"	€19.46
S	U38213.018.0050	3/16"	3/16"	1/2"	€5.76
T	U38213.018.0150	3/16"	3/16"	1.5"	€120.45
U	U38213.018.0075	3/16"	3/16"	3/4"	€6.66
V	U38213.018.0100	3/16"	3/16"	1"	€11.54
W	U38213.031.0150	5/16"	11/32"	1.5"	€23.81
X	U38213.031.0125	5/16"	11/32"	1.25"	€16.45
Y	U38213.031.0162	5/16"	11/32"	1.625"	€45.33

GRAINGER -

18-8 Stainless Steel Fender Washer

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

V

W

X

Y

Style	Model	Fits Bolt Sizes	Grade	Inside Dia.	Outside Dia.	Thickness	Price (ex. VAT)
A	U55530.019.0002	#10	316	3/16"	11/16"	0.047"	€46.26
B	U51530.050.0125	1/2"	18-8	1/2"	1.25"	0.065"	€6.83
C	U55530.050.0300	1/2"	316	1/2"	3"	0.065"	€55.41
D	U55530.050.0175	1/2"	316	1/2"	1.75"	0.065"	€22.16
E	U55530.050.0250	1/2"	316	1/2"	2.5"	0.065"	€42.31
F	U55530.050.0125	1/2"	316	1/2"	1.25"	0.065"	€11.07
G	U51530.050.0300	1/2"	18-8	1/2"	3"	0.065"	€34.80
H	U51530.050.0250	1/2"	18-8	1/2"	2.5"	0.065"	€40.70
I	U51530.050.0175	1/2"	18-8	1/2"	1.75"	0.065"	€17.05
J	U51530.025.0300	1/4"	18-8	9/32"	3"	0.065"	€80.61
K	U51530.025.0175	1/4"	18-8	9/32"	1 49/64"	0.065"	€42.38
L	U55530.025.0300	1/4"	316	1/4"	3"	0.065"	€112.70
M	U55530.025.0250	1/4"	316	1/4"	2.5"	0.065"	€101.07
N	U55530.025.0175	1/4"	316	1/4"	1.75"	0.065"	€42.60
O	U51530.025.0250	1/4"	18-8	9/32"	2.5"	0.065"	€49.24
P	U55530.012.0075	1/8"	316	5/32"	3/4"	0.065"	€9.24
Q	U51530.012.0062	1/8"	18-8	5/32"	5/8"	0.065"	€35.00
R	U55530.012.0062	1/8"	316	1/8"	5/8"	0.065"	€19.31
S	U55530.037.0175	3/8"	316	3/8"	1.75"	0.065"	€47.41
T	U55530.037.0300	3/8"	316	3/8"	3"	0.065"	€141.52
U	U51530.037.0175	3/8"	18-8	3/8"	1.75"	0.065"	€48.22
V	U51530.037.0300	3/8"	18-8	3/8"	3"	0.065"	€105.30
W	U55530.018.0150	3/16"	316	3/16"	1.5"	0.065"	€41.20
X	U51530.018.0050	3/16"	18-8	3/16"	1/2"	0.065"	€2.61
Y	U51530.018.0150	3/16"	18-8	3/16"	1.5"	0.065"	€22.07

APPROVED VENDOR -

Flat Washer 18-8 Sst

A

B

C

D

E

F

Style	Model	Fits Bolt Sizes	Inside Dia.	Outside Dia.	Thickness	Type	Price (ex. VAT)
A	U51420.050.0001	1/2"	9/16"	1.375"	0.109"	USS	€10.42
B	U51420.025.0001	1/4"	5/16"	47/64"	0.065"	USS	€3.56
C	U51420.037.0001	3/8"	7/16"	1"	0.083"	USS	€7.96
D	U51420.031.0001	5/16"	3/8"	7/8"	0.083"	USS	€4.39
E	U51410.087.0001	7/8"	29/32"	1.75"	0.156"	Thick	€9.41
F	U51420.043.0001	7/16"	5"	11/4"	0.083"	USS	€9.92

Strictly Necessary Cookies

Advertising

Recommendations

Functionality

Analytics

Categories

Brands

Flat Washers

18-8 Stainless Steel Flat Washer

Through Hardened Steel Thick Washer

18-8 Stainless Steel Thick Fender Washer

18-8 Stainless Steel Thick Washer

18-8 Stainless Steel Fender Washer

Case Hardened Steel Flat Washer

Steel Thru Hardened Flat Washer

Steel Square Washer

Steel Fender Washer

Carbon Steel Fender Washer

Steel Beveled Washer

Washer Splice Kits

B450 Series U Washers

Flat Fender Washers

Washers

Lock Washers

Flat Washers

Flat Washers

Steel Fender Washer, Plain Fastener Finish

18-8 Stainless Steel Fender Washer

Flat Washer 18-8 Sst

Flat Washers

Frequently Asked Questions

We are here to help!

Looking for a part not listed here?

Popular Search Queries

Explore More

Select your cookie preferences

Strictly Necessary Cookies

Advertising

Recommendations

Functionality

Analytics

Categories

Brands

Flat Washers

Flat Washers

Frequently Asked Questions

What is the difference between flat washers and lock washers?

How to install a flat washer?

How to remove a flat washer?

We are here to help!

Looking for a part not listed here?

Popular Search Queries

Explore More