Mechanical Tables - Single Coil Rectangular Section Spring Washers : Metric Series, Type B and BP

Single Coil Rectangular Section Spring Washers : Metric Series, Type B and BP

		(Dimensions in milimetres)


Nominal	Inside				Outside
size	diameter				diameter	radius	k
diameter	d1		width	Thickness	d2	r	(type BP
d	max	min	b	s	max	max	only)

M1.6	1.9	1.7	0.7+0.1	0.4+0.1	3.5	0.15
M2	2.3	2.1	0.9+0.1	0.5+0.1	0.5+0.1	4.3	0.15
(M2.2)	2.5	2.3	1.0+0.1	0.6+0.1	4.7	0.2	-
M2.5	2.8	2.6	1.0+0.1	0.6+0.1	5.0	0.2	-
M3	3.3	3.1	1.3+0.1	0.8+0.1	6.1	0.25	-
(M3.5)	3.8	3.6	1.3+0.1	0.8+0.1	6.6	0.25	-
M4	4.35	4.1	1.5+0.1	0.9+0.1	7.55	0.3	0.15
M5	5.35	5.1	1.8+0.1	1.2+0.1	9.15	0.3	0.15
M8	8.55	8.2	3+0.15	2+0.1	14.85	0.65	0.3
M10	10.6	10.2	3.5+0.2	2.2+0.15	18.0	0.7	0.3
M12	12.6	12.2	4+0.2	2.5+0.15	21.0	0.8	0.4
(M14)	14.7	14.2	4.5+0.2	3+0.15	24.1	1.0	0.4
M16	16.9	16.3	5+0.2	3.5+0.15	27.3	1.0	0.4
(M18)	19.0	18.3	5+0.2	3.5+0.2	29.4	1.15	0.4
M20	21.1	20.3	6+0.2	4+0.2	33.5	1.3	0.4
(M22)	23.3	22.4	6+0.2	4+0.2	35.7	1.3	0.4
M24	25.3	24.4	7+0.25	5+0.2	39.8	1.65	0.5
(M27)	28.5	27.5	7+0.25	5+0.2	43.0	1.65	0.5
M30	31.5	30.5	8+0.25	6+0.25	48.0	2.0	0.8
(M33)	34.6	33.5	10+0.25	6+0.25	55.1	2.0	0.8
M36	37.6	36.5	10+0.25	6+0.25	58.1	2.0	0.8
(M39)	40.8	39.6	10+0.25	6+0.25	61.3	2.0	0.8
M42	43.8	42.6	12+0.25	7+0.25	68.3	2.3	0.8
(M45)	46.8	45.6	12+0.25	7+0.25	71.3	2.3	0.8
M48	50.0	48.8	12+0.25	7+0.25	74.5	2.3	0.8
(M52)	54.1	52.8	14+0.25	8+0.25	82.6	2.65	1.0
M56	58.1	56.8	14+0.25	8+0.25	86.6	2.65	1.0
(M60)	62.3	60.9	14+0.25	8+0.25	90.8	2.65	1.0
M64	66.3	64.9	14+0.25	8+0.25	93.8	2.65	1.0
(M68)	70.5	69.0	14+0.25	8+0.25	99.00	2.65	1.0


Non-preferred and not usually stock sizes in brackets().