Plain Washers B

Metric Washers

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Nominal Washer Size	Type	Type Code	T Thickness	Thickness Code	A Inside Diameter	Inside Diameter Code	B Outside Diameter	Outside Diameter Code
1.6	Narrow Regular Wide	NAR REG WIDE	0.70 / 0.50 0.70 / 0.50 0.90 / 0.60	0.60 0.60 0.75	2.09 / 1.95 2.09 / 1.95 2.09 / 1.95	2.02 2.02 2.02	4.00 / 3.70 5.00 / 4.70 6.00 / 5.70	3.85 4.85 5.85
2	Narrow Regular Wide	NAR REG WIDE	0.90 / 0.60 0.90 / 0.60 0.90 / 0.60	0.75 0.75 0.75	2.64 / 2.50 2.64 / 2.50 2.64 / 2.50	2.57 2.57 2.57	5.00 / 4.70 6.00 / 5.70 8.00 / 7.64	4.85 5.85 7.82
2.5	Narrow Regular Wide	NAR REG WIDE	0.90 / 0.60 0.90 / 0.60 1.20 / 0.80	0.75 0.75 1.00	3.14 / 3.00 3.14 / 3.00 3.14 / 3.00	3.07 3.07 3.07	6.00 / 5.70 8.00 / 7.64 10.00 / 9.64	5.85 7.82 9.82
3	Narrow Regular Wide	NAR REG WIDE	0.90 / 0.60 1.20 / 0.80 1.40 / 1.00	0.75 1.00 1.20	3.68 / 3.50 3.68 / 3.50 3.68 / 3.50	3.59 3.59 3.59	7.00 / 6.64 10.00 / 9.64 12.00 / 11.57	6.82 9.82 11.78
3.5	Narrow Regular Wide	NAR REG WIDE	1.20 / 0.80 1.40 / 1.00 1.75 / 1.20	1.00 1.20 1.47	4.18 / 4.00 4.18 / 4.00 4.18 / 4.00	4.09 4.09 4.09	9.00 / 8.64 10.00 / 9.64 15.00 / 14.57	8.82 9.82 14.78
4	Narrow Regular Wide	NAR REG WIDE	1.20 / 0.80 1.40 / 1.00 2.30 / 1.60	1.00 1.20 1.95	4.88 / 4.70 4.88 / 4.70 4.88 / 4.70	4.79 4.79 4.79	10.00 / 9.64 12.00 / 11.57 16.00 / 15.57	9.82 11.78 15.78
5	Narrow Regular Wide	NAR REG WIDE	1.40 / 1.00 1.75 / 1.20 2.30 / 1.60	1.20 1.47 1.95	5.78 / 5.50 5.78 / 5.50 5.78 / 5.50	5.64 5.64 5.64	11.00 / 10.57 15.00 / 14.57 20.00 / 19.48	10.78 14.78 19.47
6	Narrow Regular Wide	NAR REG WIDE	1.75 / 1.20 1.75 / 1.20 2.30 / 1.60	1.47 1.47 1.95	6.87 / 6.65 6.87 / 6.65 6.87 / 6.65	6.67 6.67 6.67	13.00 / 12.57 18.80 / 18.37 25.40 / 24.88	12.78 18.58 25.14
8	Narrow Regular Wide	NAR REG WIDE	2.30 / 1.60 2.30 / 1.60 2.80 / 2.00	1.95 1.95 2.40	9.12 / 8.90 9.12 / 8.90 9.12 / 8.90	9.01 9.01 9.01	18.80 / 18.37 25.40 / 24.48 32.00 / 31.38	18.58 24.93 31.69
10	Narrow Regular Wide	NAR REG WIDE	2.30 / 1.60 2.80 / 2.00 3.50 / 2.50	1.95 2.40 3.00	11.12 / 10.85 11.12 / 10.85 11.12 / 10.85	10.98 10.98 10.98	20.00 / 19.48 28.00 / 27.48 39.00 / 38.38	19.74 27.74 38.69
12	Narrow Regular Wide	NAR REG WIDE	2.80 / 2.00 3.50 / 2.50 3.50 / 2.50	2.40 3.00 3.00	13.57 / 13.30 13.57 / 13.30 13.57 / 13.30	13.43 13.43 13.43	25.40 / 24.88 34.00 / 33.38 44.00 / 43.38	25.14 33.69 43.69
14	Narrow Regular Wide	NAR REG WIDE	2.80 / 2.00 3.50 / 2.50 4.00 / 3.00	2.40 3.00 3.75	15.52 / 15.25 15.52 / 15.25 15.52 / 15.25	15.38 15.38 15.38	28.00 / 27.48 39.00 / 38.38 50.00 / 49.38	27.74 38.69 49.69
16	Narrow Regular Wide	NAR REG WIDE	3.50 / 2.50 4.00 / 3.00 4.60 / 3.50	3.00 3.75 4.05	17.52 / 17.25 17.52 / 17.25 17.52 / 17.25	17.39 17.39 17.39	32.00 / 31.38 44.00 / 43.38 56.00 / 54.80	31.69 43.69 55.40
20	Narrow Regular Wide	NAR REG WIDE	4.00 / 3.00 4.60 / 3.50 5.10 / 4.00	3.75 4.05 4.55	22.32 / 21.80 22.32 / 21.80 22.32 / 21.80	22.06 22.06 22.06	39.00 / 38.38 50.00 / 49.38 66.00 / 64.80	38.69 49.69 65.40

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