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

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Flat washers are used with threaded fasteners for distributing the load uniformly and reducing frictional losses during screw tightening. These units are used for providing spacing and...Read more

APPROVED VENDOR -

Steel Thru Hardened Flat Washer

Style	Model	Fits Bolt Sizes	Inside Dia.	Outside Dia.	Thickness	Price (inc. VAT)
A	U38405.137.0001	1.375"	1.437"	2.75"	0.25"	£14.37
B	U38405.025.0001	1/4"	9/32"	5/8"	0.094"	£7.21
C	U38405.037.0001	3/8"	13/32"	13/16"	0.125"	£12.79
D	U38405.062.0001	5/8"	21/32"	1 5/16"	0.219"	£13.15
E	U38405.031.0001	5/16"	11/32"	11/16"	0.094"	£6.80
F	U38405.087.0001	7/8"	15/16"	1.75"	0.25"	£20.59
G	U38405.043.0001	7/16"	15/32"	29/32"	0.125"	£7.30
H	U38405.056.0001	9/16"	19/32"	1.156"	0.172"	£7.68

DYNAFORM -

Nylon Flat Washers

Style	Model	Fits Bolt Sizes	Inside Dia.	Outside Dia.	Size	Thickness	Price (inc. VAT)
A	874340	1/2"	1/2"	3/4"	1/2"	0.058"	£2.56
B	874350	3/4"	3/4"	1"	3/4"	0.063"	£2.83

METRIC BLUE -

Flat Washers

Style	Model	Fits Bolt Sizes	Inside Dia.	Outside Dia.	Rockwell Hardness	Thickness	Price (inc. VAT)
A	UST202003	M6	6.87mm	13mm	RC38-45	1.75mm	£15.18
A	UST202005	M8	9.12mm	18.8mm	RC38-45	2.3mm	£31.51
A	UST202006	M10	11.12mm	20 mm	RC38-45	2.3mm	£17.97
A	UST202007	M12	13.57mm	25.4mm	RC38-45	2.8mm	£7.79
B	UST194163	M14	15mm	28mm	200-300HV	2.5mm	£26.03
A	UST202009	M16	17.52mm	32 mm	RC38-45	3.5mm	£3.76
A	UST202010	M20	22.32mm	39mm	RC38-45	4mm	£4.18
A	UST202011	M24	26.12mm	44mm	RC38-45	4.6mm	£4.36

FABORY -

Plain Washers

Style	Model	Fastener Finish	Finish	Fits Bolt Sizes	Thickness	Washer Inside Dia.	Washer Material Grade	Washer O.D.	Price (inc. VAT)
A	L55420.070.0001	Plain	Plain	M7	1.6 mm	7.4 mm	A4	14 mm	£720.46
A	L51532.120.0001	Plain	Plain	M12	6 mm	13.0 mm	A2	30 mm	£401.57
A	L51532.100.0001	Plain	Plain	M10	4 mm	10.5 mm	A2	25 mm	£600.41
A	L51532.060.0001	Plain	Plain	M6	3 mm	6.4 mm	A2	17 mm	£534.19
A	L51532.080.0001	Plain	Plain	M8	4 mm	8.4 mm	A2	21 mm	£537.17
A	L38430.060.0001	Zinc Plated	Zinc Plated	M6	3 mm	6.4 mm	Low Carbon	17 mm	£968.19
A	L38250.080.0001	Zinc Plated	Zinc Plated	M8	1.6 mm	8.4 mm	Low Carbon	15 mm	£579.76
A	L38250.060.0001	Zinc Plated	Zinc Plated	M6	1.6 mm	6.4 mm	Low Carbon	11 mm	£426.21
A	L38250.030.0001	Zinc Plated	Zinc Plated	M3	0.5 mm	3.2 mm	Low Carbon	6 mm	£1,584.85
A	L38430.300.0001	Zinc Plated	Zinc Plated	M30	1 mm	31.0 mm	Low Carbon	68 mm	£341.03
A	L38430.160.0001	Zinc Plated	Zinc Plated	M16	6 mm	17.0 mm	Low Carbon	40 mm	£296.06
A	L38430.120.0001	Zinc Plated	Zinc Plated	M12	6 mm	13.0 mm	Low Carbon	30 mm	£791.43
A	L38430.080.0001	Zinc Plated	Zinc Plated	M8	4 mm	8.4 mm	Low Carbon	21 mm	£813.89
A	L38250.200.0001	Zinc Plated	Zinc Plated	M20	3 mm	21.0 mm	Low Carbon	34 mm	£318.45
A	L38250.040.0001	Zinc Plated	Zinc Plated	M4	0.5 mm	4.3 mm	Low Carbon	8 mm	£713.65
A	L38430.100.0001	Zinc Plated	Zinc Plated	M10	4 mm	10.5 mm	Low Carbon	25 mm	£459.33
A	L38430.270.0001	Zinc Plated	Zinc Plated	M27	1 mm	28.0 mm	Low Carbon	60 mm	£793.14
A	L38430.240.0001	Zinc Plated	Zinc Plated	M24	1 mm	25.0 mm	Low Carbon	50 mm	£913.62
A	L38430.040.0001	Zinc Plated	Zinc Plated	M4	1.6 mm	4.3 mm	Low Carbon	12 mm	£1,194.79
A	L38250.180.0001	Zinc Plated	Zinc Plated	M18	2.5 mm	19.0 mm	Low Carbon	30 mm	£1,370.68
A	L38430.050.0001	Zinc Plated	Zinc Plated	M5	2 mm	5.3 mm	Low Carbon	15 mm	£965.04
A	L38430.030.0001	Zinc Plated	Zinc Plated	M3	1 mm	3.2 mm	Low Carbon	9 mm	£730.68
A	L38250.160.0001	Zinc Plated	Zinc Plated	M16	2.5 mm	17.0 mm	Low Carbon	28 mm	£351.51
A	L38250.120.0001	Zinc Plated	Zinc Plated	M12	2 mm	13.0 mm	Low Carbon	20 mm	£766.43
A	L38250.100.0001	Zinc Plated	Zinc Plated	M10	1.6 mm	10.5 mm	Low Carbon	18 mm	£968.93

MASTER PRODUCTS -

Flat Washers

Style	Model	Fits Bolt Sizes	Inside Dia.	Item	Material	Outside Dia.	Rockwell Hardness	Size	Thickness	Price (inc. VAT)
A	HS-1000SAEHZYBAGGR	1"	1-1/16"	SAE Washer	Through Hardened Steel	2"	RC38 to 45	-	0.136 to 0.177"	£14.29
B	HU-1000USSHZYB	1"	1-1/16"	USS Washer	Steel	2.5"	Rc 38-45	1"	0.164"	£578.25
C	HS-1000SAEHZYB	1"	1-1/16"	SAE Washer	Steel	2"	Rc 38-45	1"	0.156"	£519.96
A	HU-1000USSHZYBAGGR	1"	1-1/16"	USS Washer	Through Hardened Steel	2.5"	RC38 to 45	-	0.136 to 0.192"	£23.74
A	HS-1500SAEHZYBAGGR	1.5"	1.625"	SAE Washer	Through Hardened Steel	3"	RC38 to 45	-	0.136 to 0.177"	£19.25
D	HU-1500USSHZYBAGGR	1.5"	1.625"	Flat Washer	Steel	3.5"	Rc 38-45	1.5"	0.164"	£1,336.35
A	HU-1500USSHZYBAGGR	1.5"	1.625"	USS Washer	Through Hardened Steel	3.5"	RC38 to 45	-	0.136 to 0.192"	£28.86
A	HS-1250SAEHZYBAGGR	1.25"	1.375"	SAE Washer	Through Hardened Steel	2.5"	RC38 to 45	-	0.136 to 0.177"	£26.07
A	HU-1250USSHZYBAGGR	1.25"	1.375"	USS Washer	Through Hardened Steel	3"	RC38 to 45	-	0.136 to 0.192"	£17.45
A	HS-1125SAEHZYBAGGR	1.125"	1.187"	SAE Washer	Through Hardened Steel	2.25"	RC38 to 45	-	0.136 to 0.177"	£20.79
A	HU-1125USSHZYBAGGR	1.125"	1.25"	USS Washer	Through Hardened Steel	2.75"	RC38 to 45	-	0.136 to 0.192"	£17.55
A	HS-0500SAEHZYBAGGR	1/2"	17/32"	SAE Washer	Through Hardened Steel	1 1/16"	RC38 to 45	-	0.097 to 0.121"	£7.38
A	HU-0500USSHZYBAGGR	1/2"	9/16"	USS Washer	Through Hardened Steel	1.375"	RC38 to 45	-	0.086 to 0.132"	£7.98
E	HU-0500USSHZYB	1/2"	9/16"	USS Washer	Steel	1.375"	Rc 38-45	1/2"	0.109"	£295.33
F	HS-0500SAEHZYB	1/2"	17/32"	SAE Washer	Through Hardened Steel	1 1/16"	C38 to C45	-	0.097 to 0.121"	£994.33
A	HU-0250USSHZYBAGGR	1/4"	5/16"	USS Washer	Through Hardened Steel	3/4"	RC38 to 45	-	0.051 to 0.08"	£14.70
G	HU-0250USSHZYBAGGR	1/4"	5/16"	Flat Washer	Steel	3/4"	Rc 38-45	1/4"	0.066"	£492.75
A	HS-0250SAEHZYBAGGR	1/4"	9/32"	SAE Washer	Through Hardened Steel	5/8"	RC38 to 45	-	0.051 to 0.08"	£10.77
A	HU-0750USSHZYBAGGR	3/4"	13/16"	USS Washer	Through Hardened Steel	2"	RC38 to 45	-	0.122 to 0.177"	£30.83
A	HS-0750SAEHZYBAGGR	3/4"	13/16"	SAE Washer	Through Hardened Steel	1 15/32"	RC38 to 45	-	0.122 to 0.177"	£14.39
H	HU-0750USSHZYBAGGR	3/4"	13/16"	Flat Washer	Steel	2"	Rc 38-45	3/4"	0.149"	£650.04
A	HU-0375USSHZYBAGGR	3/8"	7/16"	USS Washer	Through Hardened Steel	1"	RC38 to 45	-	0.064 to 0.104"	£12.16
A	HS-0375SAEHZYBAGGR	3/8"	13/32"	SAE Washer	Through Hardened Steel	13/16"	RC38 to 45	-	0.051 to 0.08"	£7.43
I	HU-0375USSHZYB	3/8"	7/16"	USS Washer	Steel	1"	Rc 38-45	3/8"	0.084"	£285.90
J	HU-0625USSHZYBAGGR	5/8"	11/16"	Flat Washer	Steel	1.75"	Rc 38-45	5/8"	0.134"	£539.21

FABORY -

SAE Washers

Style	Model	Fits Bolt Sizes	Thickness	Washer Inside Dia.	Washer O.D.	Price (inc. VAT)
A	U38206.150.0001	1 1/2	0.165"	1 5/8"	3"	£11.02
A	B38206.150.0001	1 1/2	0.165"	1 5/8"	3"	£211.44
A	B38206.125.0001	1 1/4	0.165"	1 3/8"	2 1/2"	£251.07
A	U38206.125.0001	1 1/4	0.165"	1 3/8"	2 1/2"	£7.91
A	B38206.112.0001	1 1/8	0.134"	1 1/4"	2 1/4"	£270.33
A	U38206.112.0001	1 1/8	0.134"	1 1/4"	2 1/4"	£5.52
A	U38206.137.0001	1 3/8	0.165"	1 1/2"	2 3/4"	£8.72
A	B38206.137.0001	1 3/8	0.165"	1 1/2"	2 3/4"	£229.30
A	B38206.100.0001	1"	0.134"	1 1/16"	2"	£244.58
A	U38206.100.0001	1"	0.134"	1 1/16"	2"	£4.00
A	B38206.050.0001	1/2"	0.095"	17/32"	1 1/16"	£223.47
A	U38206.050.0001	1/2"	0.095"	17/32"	1 1/16"	£6.47
A	U38206.025.0001	1/4"	0.065"	9/32"	5/8"	£5.14
A	B38206.025.0001	1/4"	0.065"	9/32"	5/8"	£317.00
A	B38206.075.0001	3/4"	0.134"	13/16"	1 15/32"	£248.76
A	U38206.075.0001	3/4"	0.134"	13/16"	1 15/32"	£7.61
A	U38206.037.0001	3/8"	0.065"	13/32"	13/16"	£7.77
A	B38206.037.0001	3/8"	0.065"	13/32"	13/16"	£280.13
A	U38206.062.0001	5/8"	0.095"	21/32"	1 5/16"	£7.71
A	B38206.062.0001	5/8"	0.095"	21/32"	1 5/16"	£258.30
A	U38206.031.0001	5/16"	0.065"	11/32"	11/16"	£6.04
A	B38206.031.0001	5/16"	0.065"	11/32"	11/16"	£285.39
A	U38206.087.0001	7/8"	0.134"	15/16"	1 3/4"	£6.51
A	B38206.087.0001	7/8"	0.134"	15/16"	1 3/4"	£234.93
A	U38206.043.0001	7/16"	0.065"	15/32"	59/64"	£4.67

FOREVERBOLT -

Flat Washers

Style	Model	Fits Bolt Sizes	Grade	Inside Dia.	Outside Dia.	Package Weight	System of Measurement	Thickness	Thickness Tolerance	Price (inc. VAT)
A	FBFLWASH34SOD2	3/4"	18-8	13/16"	1.5"	0.04	Inch	0.108 to 0.16"	0.108 to 0.160"	£4.99
B	FBFEWASHT34158	3/4"	18-8	25/32"	1.625"	0.11	Inch	1/4"	+/-0.010"	£7.37
C	FB3FLWASH34SOD2	3/4"	316	13/16"	1.5"	0.05	Inch	0.108 to 0.16"	0.108 to 0.160"	£9.03
D	FB3FLWASH34LOD2P10	3/4"	316	13/16"	2"	1.1	Inch	0.122 to 0.177"	0.122 to 0.177"	£60.00
E	FBFLWASH38LOD2P25	3/8"	18-8	7/16"	1"	0.31	Inch	0.064 to 0.104"	0.064 to 0.104"	£24.89
F	FB3FLWASH38LOD2P10	3/8"	316	7/16"	1"	0.15	Inch	0.064 to 0.104"	0.064 to 0.104"	£17.69
G	FB3FLWASH38LOD3P100	3/8"	316	7/16"	1"	1.3	Inch	0.064 to 0.104"	0.064 to 0.104"	£140.32
H	FBFLWASH78SOD3P25	7/8"	18-8	15/16"	2"	1.7	Inch	0.11"	+/-0.010"	£54.88
I	FBFEWASHT78134	7/8"	18-8	29/32"	1.75"	0.12	Inch	1/4"	+/-0.010"	£8.38
J	FB3MWASH6P100	M6	316	6.40mm	12 mm	0.25	Metric	1.6mm	+/-0.20mm	£60.77
K	FB3MWASH8P100	M8	316	8.40mm	16 mm	0.47	Metric	1.6mm	+/-0.20mm	£68.67
L	FB3MWASH12P25	M12	316	13.00mm	24mm	0.35	Metric	2.5mm	+/-0.20mm	£25.97

FABORY -

Fender Washers

Style	Model	Fastener Finish	Finish	Fits Bolt Sizes	Thickness	Thickness Tolerance	Washer Inside Dia.	Washer Material Grade	Washer O.D.	Price (inc. VAT)
A	B51530.037.0150	Plain	Plain	3/8"	0.065"	0.047" to 0.080"	13/32"	18-8	1 1/2"	£530.16
B	B55530.015.0087	Plain	Plain	5/32"	0.065"	0.047" to 0.080"	5/32"	316	7/8"	£3,239.27
B	B38213.037.0125	Plain	Plain	3/8"	0.0625"	+0.08" /-0.047"	13/32"	Low Carbon	1 1/4"	£9,149.13
B	B38213.031.0250	Plain	Plain	5/16"	0.0625"	+0.08" /-0.047"	11/32"	Low Carbon	2 1/2"	£360.66
B	B38213.025.0250	Plain	Plain	1/4"	0.0625"	+0.08" /-0.047"	9/32"	Low Carbon	2 1/2"	£325.85
B	B38213.025.0150	Plain	Plain	1/4"	0.0625"	+0.08" /-0.047"	9/32"	Low Carbon	1 1/2"	£3,678.60
B	B38213.015.0087	Plain	Plain	5/32"	0.0625"	+0.08" /-0.047"	3/16"	Low Carbon	7/8"	£554.57
A	B55530.050.0200	Plain	Plain	1/2"	0.065"	0.047" to 0.080"	17/32"	316	2"	£623.05
B	B55530.031.0250	Plain	Plain	5/16"	0.065"	0.047" to 0.080"	5/16"	316	2 1/2"	£890.45
A	B55530.031.0200	Plain	Plain	5/16"	0.065"	0.047" to 0.080"	11/32"	316	2"	£559.15
B	B55530.031.0162	Plain	Plain	5/16"	0.065"	0.047" to 0.080"	5/16"	316	1 5/8"	£1,284.08
A	B55530.018.0100	Plain	Plain	3/16"	0.065"	0.047" to 0.080"	3/16"	316	1"	£750.34
A	B55530.018.0050	Plain	Plain	3/16"	0.065"	0.047" to 0.080"	3/16"	316	1/2"	£2,338.40
B	B51530.050.0250	Plain	Plain	1/2"	0.065"	0.047" to 0.080"	1/2"	18-8	2 1/2"	£636.54
B	B51530.025.0250	Plain	Plain	1/4"	0.065"	0.047" to 0.080"	9/32"	18-8	2 1/2"	£497.99
B	B51530.037.0300	Plain	Plain	3/8"	0.065"	0.047" to 0.080"	3/8"	18-8	3"	£520.56
A	B51530.037.0200	Plain	Plain	3/8"	0.065"	0.047" to 0.080"	13/32"	18-8	2"	£408.77
B	B51530.025.0175	Plain	Plain	1/4"	0.065"	0.047" to 0.080"	9/32"	18-8	1 49/64"	£1,019.26
A	B51530.025.0125	Plain	Plain	1/4"	0.065"	0.047" to 0.080"	9/32"	18-8	1 1/4"	£443.20
A	B51530.025.0100	Plain	Plain	1/4"	0.065"	0.047" to 0.080"	9/32"	18-8	1"	£484.34
B	B38213.037.0200	Plain	Plain	3/8"	0.0625"	+0.08" /-0.047"	13/32"	Low Carbon	2"	£484.18
A	B51530.031.0125	Plain	Plain	5/16"	0.065"	0.047" to 0.080"	11/32"	18-8	1 1/4"	£476.64
B	B51530.018.0150	Plain	Plain	3/16"	0.065"	0.047" to 0.080"	3/16"	18-8	1 1/2"	£817.44
C	B51530.018.0100	Plain	Plain	3/16"	0.065"	0.047" to 0.080"	3/16"	18-8	1"	£748.41
B	B51530.015.0087	Plain	Plain	5/32"	0.065"	0.047" to 0.080"	3/16"	18-8	7/8"	£938.43

ARMOR COAT -

Flat Washers

Style	Model	Fits Bolt Sizes	Inside Dia.	Item	Outside Dia.	Size	Thickness	Type	Price (inc. VAT)
A	UST236043	1/2"	17/32"	SAE Washer	1 1/16"	1/2"	7/64"	SAE	£5.74
B	UST237823	1/2"	9/16"	USS Washer	1.375"	1/2"	1/8"	USS	£11.83
C	UST237819	1/4"	5/16"	USS Washer	3/4"	1/4"	5/64"	USS	£14.35
D	UST236039	1/4"	9/32"	SAE Washer	5/8"	1/4"	5/64"	SAE	£10.10
E	UST237825	3/4"	13/16"	USS Washer	2"	3/4"	5/32"	USS	£22.77
F	UST236045	3/4"	13/16"	SAE Washer	1 15/32"	3/4"	9/64"	SAE	£7.83
G	UST236041	3/8"	13/32"	SAE Washer	13/16"	3/8"	3/32"	SAE	£7.16
H	UST237821	3/8"	7/16"	USS Washer	1"	3/8"	3/32"	USS	£9.55
I	UST237824	5/8"	21/32"	USS Washer	1.75"	5/8"	5/32"	USS	£17.52
J	UST236044	5/8"	11/16"	SAE Washer	1 5/16"	5/8"	1/8"	SAE	£8.48
K	UST237820	5/16"	3/8"	USS Washer	7/8"	5/16"	3/32"	USS	£7.68
L	UST236040	5/16"	11/32"	SAE Washer	11/16"	5/16"	3/32"	SAE	£4.89
M	UST237822	7/16"	1/2"	USS Washer	1.25"	7/16"	3/32"	USS	£8.57
N	UST236042	7/16"	15/32"	SAE Washer	59/64"	7/16"	3/32"	SAE	£4.54

SUPER-STRUT -

ZE147 Series Flat Washer

Style	Model	Finish	Inside Dia.	Thickness
A	ZE147-1/4EG	Electro-Galvanized	5/16"	0.08"	RFQ
A	ZE147-3/8EG	Gold Galvanized	3/8"	0.104"	RFQ

L9 -

Flat Washers

Style	Model	Fits Bolt Sizes	Thickness	Thickness Tolerance	Washer Inside Dia.	Washer O.D.	Price (inc. VAT)
A	448026	1 1/2	0.25"	+/-0.016"	1 9/16"	1"	£278.88	RFQ
A	447026	1 1/2	0.203125"	+/-0.016"	1 41/64"	1"	£709.88	RFQ
A	447024	1 1/4	0.182"	+/-0.016"	1 25/64"	1"	£543.27	RFQ
A	448024	1 1/4	0.25"	+/-0.016"	1 5/16"	1"	£232.70	RFQ
A	448022	1 1/8	0.16"	+/-0.014"	1 3/16"	1"	£331.40	RFQ
A	447022	1 1/8	0.182"	+/-0.014"	1 17/64"	2 3/4"	£818.53	RFQ
A	447020	1"	0.162"	+/-0.014"	1 3/32"	2 1/2"	£296.99	RFQ
A	448020	1"	0.16"	+/-0.014"	1 1/16"	2 1/32"	£227.27	RFQ
A	447010	1/2"	0.140625"	+/-0.011"	17/32"	1 3/8"	£183.81	RFQ
A	448010	1/2"	0.109375"	+/-0.011"	17/32"	1 3/4"	£132.20	RFQ
A	447002	1/4"	0.078125"	+/-0.008"	17/64"	1"	£78.32	RFQ
A	448002	1/4"	0.063"	+/-0.008"	9/32"	5/8"	£67.46	RFQ
A	448016	3/4"	0.16"	+/-0.014"	13/16"	1 31/64"	£228.17	RFQ
A	447016	3/4"	0.162"	+/-0.014"	25/32"	2"	£376.67	RFQ
A	447006	3/8"	0.086"	+/-0.011"	13/32"	1"	£137.63	RFQ
A	448006	3/8"	0.109375"	+/-0.011"	27/64"	13/16"	£106.84	RFQ
A	447014	5/8"	0.162"	+/-0.014"	41/64"	1 3/4"	£360.37	RFQ
A	448014	5/8"	0.16"	+/-0.014"	21/32"	1"	£229.08	RFQ
A	448004	5/16"	0.063"	+/-0.008"	11/32"	11/16"	£85.11	RFQ
A	447004	5/16"	0.086"	+/-0.008"	11/32"	7/8"	£106.84	RFQ
A	448018	7/8"	0.16"	+/-0.014"	15/16"	1 49/64"	£265.30	RFQ
A	447018	7/8"	0.162"	+/-0.014"	15/16"	2 1/4"	£398.40	RFQ
A	448008	7/16"	0.109375"	+/-0.011"	15/32"	59/64"	£66.55	RFQ
A	447008	7/16"	0.109375"	+/-0.011"	15/32"	1 1/8"	£82.40	RFQ
A	448012	9/16"	0.109375"	+/-0.011"	19/32"	1 11/64"	£184.71	RFQ

SUPER-STRUT -

EF147 Series Flat Washer

Style	Model	Finish	Inside Dia.	Material	Outside Dia.	Thickness
A	EF147-3/8ATT	-	-	-	-	-	RFQ
A	EF147-1/2SS316	-	17/32"	Stainless Steel	2"	0.051"	RFQ
A	EF147-1/4SS316	-	5/16"	Stainless Steel	1 1/4"	-	RFQ
A	EF147-1/2EG	Electro-Galvanized	-	Steel	2"	-	RFQ
A	EF147-1/4EG	Electro-Galvanized	-	Steel	1 1/4"	-	RFQ
A	EF147-3/8EG	Electro-Galvanized	-	Steel	1 1/2"	-	RFQ
A	EF147-3/8	Gold Galvanized	13/32"	Steel	1 1/2"	0.08"	RFQ
A	EF147-1/4	Gold Galvanized	5/16"	Steel	1 1/4"	-	RFQ
A	EF147-1/2	Gold Galvanized	-	Steel	2"	-	RFQ

SUPER-STRUT -

E147 Series Flat Washer

Style	Model	Color	Finish	Inside Dia.	Material	Outside Dia.	Thickness	Price (inc. VAT)
A	E147-3/8SS6	-	-	0.438"	Stainless Steel	1"	0.104"	-	RFQ
A	E147-1/4SS6	-	-	1/4"	Stainless Steel	-	-	-	RFQ
A	E147-1/2SS6	-	-	1/2"	Stainless Steel	-	-	-	RFQ
B	E147-1/4	-	Gold Galvanized	-	Steel	-	-	-	RFQ
A	E147-3/8SS	-	-	0.438"	Stainless Steel	1"	0.104"	-	RFQ
B	E147-1/2	-	Gold Galvanized	0.562"	Steel	1.375"	0.132"	-	RFQ
A	E147-1/2-SS	-	-	0.562"	Stainless Steel	1.375"	0.132"	-	RFQ
C	E147 3/8	Gold	Gold Galvanized	-	Steel	-	1/4"	£57.49
A	E147-5/8EG	Silver	Electro-Galvanized	0.688"	Steel	1.75"	0.16"	-	RFQ
A	E147-5/16SS6	Silver	-	0.375"	Stainless Steel	0.875"	0.104"	-	RFQ
A	E147-1/4SS	Silver	-	0.312"	Stainless Steel	0.734"	0.8"	-	RFQ
B	E147-5/8	Silver	Electro-Galvanized	0.688"	Steel	1.75"	0.16"	-	RFQ
B	E147-5/16	Silver	Electro-Galvanized	0.375"	Steel	0.875"	0.104"	-	RFQ
B	E147-3/4	Silver	Electro-Galvanized	0.812"	Steel	2"	0.177"	-	RFQ
B	E147-7/8	Silver	Electro-Galvanized	0.938"	Steel	2.25"	0.192"	-	RFQ

SUPER-STRUT -

AB241 Series Square Washer

Style	Model	Color	Finish	Material	Thickness	Width
A	AB241-5/8SS316	-	-	Stainless Steel	1/4"	-	RFQ
B	AB241L-3/8	-	Gold Galvanized	Steel	3/8"	1-9/16"	RFQ
C	AB241L-5/16	-	Gold Galvanized	Steel	-	-	RFQ
B	AB241L-5/16EG	-	Electro-Galvanized	Steel	-	-	RFQ
D	AB241-5/8	-	Gold Galvanized	Steel	1/8"	1-1/2"	RFQ
E	AB241L-1/2EG	-	Electro-Galvanized	Steel	1/2"	1-9/16"	RFQ
B	AB241L-1/2	-	Gold Galvanized	Steel	1/2"	1-9/16"	RFQ
B	AB241L-1/4	-	Gold Galvanized	Steel	-	1-9/16"	RFQ
A	AB241-5/16SS	-	-	Stainless Steel	1/8"	-	RFQ
B	AB241L-1/4EG	-	Silver Galvanized	Steel	-	-	RFQ
E	AB241L-3/8EG	-	Electro-Galvanized	Steel	3/8"	1-9/16"	RFQ
B	AB241L-5/8	-	Gold Galvanized	Steel	-	-	RFQ
B	AB241L-5/8EG	-	Electro-Galvanized	Steel	-	-	RFQ
F	AB241-1/2-HDG	-	Hot-Dip Galvanized	Steel	1/4"	1-1/2"	RFQ
F	AB241-3/4	-	Gold Galvanized	Steel	1/4"	1-1/2"	RFQ
F	AB241-3/8-HDG	-	Hot-Dip Galvanized	Steel	3/16"	1-1/2"	RFQ
D	AB241-5/16	-	Gold Galvanized	Steel	1/8"	1-1/2"	RFQ
A	AB241-5/16GR	-	-	Steel	1/8"	-	RFQ
D	AB241-3/8-GR	Green	Urethane Powder	Steel	3/16"	1-1/2"	RFQ
D	AB241-1/2-GR	Green	-	Steel	1/4"	1-1/2"	RFQ
D	AB241-3/8-WH	White	Urethane Powder	Steel	3/16"	1-1/2"	RFQ
D	AB241-1/2-WH	White	-	Steel	1/4"	1-1/2"	RFQ

SUPER-STRUT -

C781 Series Square Washer

Style	Model	Finish	Material	Width
A	C-781-1/2-SS	-	Stainless Steel	3"	RFQ
A	C781-5/8SS6	-	Stainless Steel	3"	RFQ
A	C781-3/8B	Black	Steel	-	RFQ
A	C781-3/4B	Black	Steel	-	RFQ
A	C781-1/2B	Black	Steel	-	RFQ
A	C781-1B	Black	Steel	4"	RFQ
A	C781-3/8EG	Electro-Galvanized	Steel	-	RFQ
A	C781-5/8EG	Electro-Galvanized	Steel	3"	RFQ
A	C781-1/2-EG	Electro-Galvanized	Steel	-	RFQ

TE-CO -

Flat Washers, Black Oxide

Style	Model	Fits Bolt Sizes	Inside Dia.	Item	Material	Outside Dia.	Size	Thickness	Price (inc. VAT)
A	42612	#4	1/8"	Flat Washer	Steel	5/16"	-	5/64	£0.06
B	42614	#8	3/16"	Flat Washer	Steel	7/16"	-	5/64	£0.02
C	42600	#10	13/64"	Flat Washer	Steel	1/2"	-	3/32"	-	RFQ
D	42609	1"	1"	Flat Washer	Steel	2"	1"	3/16"	£14.93
E	42627	1"	1.030"	Heavy Duty Washer	Hardened Steel	2"	1"	9/32"	-	RFQ
F	42611	1.25"	1.300"	Flat Washer	Steel	2.5"	1 1/4 Lbs.	9/32"	-	RFQ
G	42610	1.125"	1"	Flat Washer	Steel	2.25"	1 1/8"	7/32"	£0.56
H	42605	1/2"	17/32"	Flat Washer	Steel	1.125"	1/2"	1/8"	£14.38
I	42619	1/4"	9/32"	Heavy Duty Washer	Hardened Steel	5/8"	1/4"	3/16"	£0.12
J	42607	3/4"	25/32"	Flat Washer	Steel	1.625"	3/4"	5/32	£0.17
K	42621	3/8"	13/32"	Heavy Duty Washer	Hardened Steel	7/8"	3/8"	3/16"	-	RFQ
L	42620	5/16"	11/32"	Heavy Duty Washer	Hardened Steel	3/4"	5/16"	3/16"	£14.23
M	42626	7/8"	29/32"	Heavy Duty Washer	Hardened Steel	1.75"	7/8"	1/4"	-	RFQ
N	42604	7/16"	15/32"	Flat Washer	Steel	1"	7/16"	1/8"	£0.11

GRAINGER -

18-8 Stainless Steel Fender Washer

Style	Model	Fits Bolt Sizes	Grade	Inside Dia.	Outside Dia.	Thickness	Price (inc. VAT)
A	U55530.019.0002	#10	316	3/16"	11/16"	0.047"	£36.90
B	U51530.050.0250	1/2"	18-8	1/2"	2.5"	0.065"	£46.87
C	U55530.050.0125	1/2"	316	1/2"	1.25"	0.065"	£13.60
D	U55530.050.0300	1/2"	316	1/2"	3"	0.065"	£68.01
E	U51530.050.0125	1/2"	18-8	1/2"	1.25"	0.065"	£7.86
F	U55530.050.0175	1/2"	316	1/2"	1.75"	0.065"	£25.52
G	U51530.050.0175	1/2"	18-8	1/2"	1.75"	0.065"	£19.63
H	U55530.050.0250	1/2"	316	1/2"	2.5"	0.065"	£36.89
I	U51530.050.0300	1/2"	18-8	1/2"	3"	0.065"	£42.72
J	U51530.025.0175	1/4"	18-8	9/32"	1 49/64"	0.065"	£52.02
K	U55530.025.0300	1/4"	316	1/4"	3"	0.065"	£138.33
L	U55530.025.0250	1/4"	316	1/4"	2.5"	0.065"	£116.38
M	U55530.025.0175	1/4"	316	1/4"	1.75"	0.065"	£49.05
N	U51530.025.0250	1/4"	18-8	9/32"	2.5"	0.065"	£66.05
O	U51530.025.0300	1/4"	18-8	9/32"	3"	0.065"	£98.94
P	U55530.012.0062	1/8"	316	1/8"	5/8"	0.065"	£22.24
Q	U51530.012.0062	1/8"	18-8	5/32"	5/8"	0.065"	£42.64
R	U55530.012.0075	1/8"	316	5/32"	3/4"	0.065"	£11.34
S	U51530.037.0300	3/8"	18-8	3/8"	3"	0.065"	£121.25
T	U55530.037.0175	3/8"	316	3/8"	1.75"	0.065"	£58.19
U	U51530.037.0175	3/8"	18-8	3/8"	1.75"	0.065"	£59.19
V	U55530.037.0300	3/8"	316	3/8"	3"	0.065"	£155.28
W	U55530.018.0150	3/16"	316	3/16"	1.5"	0.065"	£47.45
X	U51530.018.0150	3/16"	18-8	3/16"	1.5"	0.065"	£26.89
Y	U55530.018.0100	3/16"	316	3/16"	1"	0.065"	£14.32

GRAINGER -

Steel Fender Washer

Style	Model	Fits Bolt Sizes	Inside Dia.	Outside Dia.	Thickness	Price (inc. VAT)
A	U38160.013.0002	#6	5/32"	9/16"	0.047"	£3.69
B	U38160.019.0002	#10	3/16"	11/16"	0.047"	£5.08
C	U38160.025.0002	1/4"	9/32"	9/16"	0.047"	£4.27
D	U38210.018.0050	3/16"	3/16"	1/2"	0.065"	£2.00
E	U38160.031.0001	5/16"	11/32"	5/8"	0.047"	£2.85
F	U38160.087.0002	7/8"	15/16"	3.25"	0.125"	£27.12

GRAINGER -

18-8 Stainless Steel Flat Washer

Style	Model	Fits Bolt Sizes	Grade	Inside Dia.	Item	Outside Dia.	Package Weight	System of Measurement	Thickness	Price (inc. VAT)
A	U55410.062.0001	5/8"	316	21/32"	Flat Washer	1 5/16"	-	Inch	0.063"	£17.49
B	U55410.031.0001	5/16"	316	11/32"	Flat Washer	11/16"	-	Inch	0.047"	£6.09
C	M51532.060.0001	M6	A2	6.40mm	Plain Washer	17mm	0.882 Lbs.	Metric	3mm	£7.53
D	M55420.070.0001	M7	A4	7.40mm	Plain Washer	14mm	0.153 Lbs.	Metric	1.6mm	£3.09
E	M51532.080.0001	M8	A2	8.40mm	Plain Washer	21mm	1.764 Lbs.	Metric	4mm	£40.74
F	M51532.100.0001	M10	A2	10.50mm	Plain Washer	25 mm	2.426 Lbs.	Metric	4mm	£50.25
G	M51532.120.0001	M12	A2	13.00mm	Plain Washer	30mm	2.646 Lbs.	Metric	6mm	£47.27

GRAINGER -

Steel Flat Washer

Style	Model	Finish	Fits Bolt Sizes	Inside Dia.	Item	Outside Dia.	Package Weight	System of Measurement	Thickness	Price (inc. VAT)
A	B38100.087.0001	Plain	7/8"	15/16"	Flat Washer	2.25"	22.00 Lbs.	Inch	0.165"	£122.30
B	B38100.100.0001	Plain	1"	1-1/16"	Flat Washer	2.5"	21.21 Lbs.	Inch	0.165"	£122.71
C	B38100.062.0001	Plain	5/8"	11/16"	Flat Washer	1.75"	20.48 Lbs.	Inch	0.134"	£129.11
D	B38100.075.0001	Plain	3/4"	13/16"	Flat Washer	2"	14.68 Lbs.	Inch	0.148"	£204.42
E	B38100.050.0001	Plain	1/2"	9/16"	Flat Washer	1.375"	21.34 Lbs.	Inch	0.109"	£122.01
F	U38400.011.0005	Zinc-Plated	#4	1/8"	Flat Washer	7/16"	-	Inch	0.047"	£2.54
G	M38430.060.0001	Zinc-Plated	M6	6.40mm	Plain Washer	17mm	0.882 Lbs.	Metric	3mm	£3.65
H	M38430.100.0001	Zinc-Plated	M10	10.50mm	Plain Washer	25 mm	2.426 Lbs.	Metric	4mm	£12.72
I	M38430.120.0001	Zinc-Plated	M12	13.00mm	Plain Washer	30mm	5.292 Lbs.	Metric	6mm	£21.89
J	M38430.160.0001	Zinc-Plated	M16	17.00mm	Plain Washer	40mm	9.923 Lbs.	Metric	6mm	£91.41
K	M38430.180.0001	Zinc-Plated	M18	19.00mm	Plain Washer	44mm	17.067 Lbs.	Metric	8mm	£284.16
L	U38400.008.0002	Zinc-Plated	#2	3/32"	Flat Washer	1/4"	-	Inch	0.031"	£3.57
M	M38250.200.0001	Zinc-Plated	M20	21.00mm	Plain Washer	34mm	2.911 Lbs.	Metric	3mm	£15.08
N	M38250.050.0001	Zinc-Plated	M5	5.30mm	Plain Washer	9mm	0.064 Lbs.	Metric	1 mm	£3.46
O	M38430.040.0001	Zinc-Plated	M4	4.30mm	Plain Washer	12 mm	0.243 Lbs.	Metric	1.6mm	£4.02
P	M38430.080.0001	Zinc-Plated	M8	8.40mm	Plain Washer	21mm	1.764 Lbs.	Metric	4mm	£10.92
Q	M38250.026.0001	Zinc-Plated	M2.6	2.70mm	Plain Washer	5.5"	0.013 Lbs.	Metric	0.5 mm	£3.19
R	M38430.220.0001	Zinc-Plated	M22	23.00mm	Plain Washer	50mm	10.705 Lbs.	Metric	8mm	£180.35
S	M38430.050.0001	Zinc-Plated	M5	5.30mm	Plain Washer	15mm	0.485 Lbs.	Metric	2mm	£6.52
T	M38250.160.0001	Zinc-Plated	M16	17.00mm	Plain Washer	28mm	1.682 Lbs.	Metric	2.5mm	£11.23
U	M38250.180.0001	Zinc-Plated	M18	19.00mm	Plain Washer	30mm	1.832 Lbs.	Metric	2.5mm	£67.96
V	U38400.037.0003	Zinc-Plated	3/8"	13/32"	Flat Washer	1.25"	-	Inch	0.109"	£24.53
W	M38250.140.0001	Zinc-Plated	M14	15.00mm	Plain Washer	24mm	1.103 Lbs.	Metric	2.5mm	£14.26
X	M38250.040.0001	Zinc-Plated	M4	4.30mm	Plain Washer	8mm	0.031 Lbs.	Metric	0.5 mm	£3.25
Y	M38250.030.0001	Zinc-Plated	M3	3.20mm	Plain Washer	6mm	0.015 Lbs.	Metric	0.5 mm	£2.12

APPROVED VENDOR -

Thick Fender Washer, Steel

Style	Model	Fits Bolt Sizes	Inside Dia.	Outside Dia.	Thickness	Thickness Tolerance	Price (inc. VAT)
A	Z9678	#10	7/32"	1"	1/8"	+/-0.013"	£14.16
B	Z9679	#10	7/32"	1"	1/4"	+/-0.025"	£18.13
C	Z9696	1"	1-1/16"	3.5"	1/8"	+/-0.013"	£8.59
D	Z9697	1"	1-1/16"	3.5"	1/4"	+/-0.025"	£7.86
E	Z9677	1"	1-1/16"	3.5"	3/8"	+/-0.037"	£33.54
F	Z9674	1"	1-1/16"	3.25"	1/4"	+/-0.025"	£11.11
G	Z9675	1.25"	1.375"	4"	1/2"	+/-0.050"	£38.57
H	Z9688	1/2"	17/32"	2"	1/8"	+/-0.013"	£16.23
I	Z9670	1/2"	9/16"	3"	1/4"	+/-0.025"	£21.61
J	Z9689	1/2"	17/32"	2"	1/4"	+/-0.025"	£18.58
K	Z9680	1/4"	9/32"	1.5"	1/8"	+/-0.013"	£15.15
L	Z9681	1/4"	9/32"	1.5"	1/4"	+/-0.025"	£17.45
M	Z9692	3/4"	13/16"	3"	1/8"	+/-0.013"	£19.35
N	Z9693	3/4"	13/16"	3"	1/4"	+/-0.025"	£20.64
O	Z9698	3/4"	13/16"	3"	3/8"	+/-0.037"	£12.79
P	Z9685	3/8"	13/32"	2"	1/4"	+/-0.025"	£49.03
Q	Z9684	3/8"	13/32"	2"	1/8"	+/-0.013"	£14.73
R	Z9690	5/8"	11/16"	2.5"	1/8"	+/-0.013"	£18.49
S	Z9691	5/8"	11/16"	2.5"	1/4"	+/-0.025"	£20.41
T	Z9671	5/8"	11/16"	3"	1/4"	+/-0.025"	£20.16
U	Z9683	5/16"	11/32"	2"	1/4"	+/-0.025"	£42.26
V	Z9682	5/16"	11/32"	2"	1/8"	+/-0.013"	£12.62
W	Z9695	7/8"	15/16"	3.25"	1/4"	+/-0.025"	£26.43
X	Z9699	7/8"	15/16"	3.25"	3/8"	+/-0.037"	£10.91
Y	Z9694	7/8"	15/16"	3.25"	1/8"	+/-0.013"	£22.34

12...6 7

Flat Washers

Flat washers are used with threaded fasteners for distributing the load uniformly and reducing frictional losses during screw tightening. These units are used for providing spacing and electrical insulation in control boxes. Raptor Supplies offers a wide array of flat washers from Accurate Mfd Products, Apollo, Armor Coat, C. Sherman Johnson, Dynaform, Earnest, Fabory, Foreverbolt, Grainger, Master Products, Metric Blue, TE-CO and Micro Plastics.

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ZE147 Series Flat Washer

Flat Washers

EF147 Series Flat Washer

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AB241 Series Square Washer

C781 Series Square Washer

Flat Washers, Black Oxide

18-8 Stainless Steel Fender Washer

Steel Fender Washer

18-8 Stainless Steel Flat Washer

Steel Flat Washer

Thick Fender Washer, Steel

Flat Washers

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