Spring Lock Washer Spring Washer No. 2

Brand :

SUNCO

Caution

Product Description

A portion of the flat washer is cut off, with a twisted shape. This twisted shape helps prevent loosening or falling if it is loosened. No. 2 is the most widely available type of spring washer.

Drawing

Specifications Table

Nominal		Inner diameter (d)		Outer diameter (D) Max.	Width (b) x Thickness (t)
For metric thread	For Whitworth thread	Reference dimension	Tolerance	Outer diameter (D) Max.	Width (b) x Thickness (t)
2	—	2.1	+0.25 0	4.4	0.9	0.5
2.3	—	2.4	+0.25 0	4.9	1	0.6
2.5	—	2.6	+0.3 0	5.2	1	0.6
2.6	—	2.7		5.3	1	0.6
3	—	3.1		5.9	1.1	0.7
3.5	—	3.6		6.6	1.2	0.8
4	—	4.2	+0.4 0	7.6	1.4	1
5	—	5.1		9.2	1.7	1.3
6	—	6.1		12.2	2.7	1.5
—	1/4	6.5		12.5	2.8	1.6
7	—	7.1		13.4	2.8	1.6
8	5/16	8.2	+0.5 0	15.4	3.2	2
—	3/8	9.8		17.8	3.6	2.4
10	—	10.2		18.4	3.7	2.5
—	7/16	11.4		20.2	4	2.8
12	—	12.2	+0.6 0	21.5	4.2	3
—	1/2	13		22.7	4.4	3.2
14	—	14.4		24.7	4.7	3.5
16	5/8	16.2	+0.8 0	28	5.2	4
18	—	18.2		31	5.7	4.6
—	3/4	19.5		32.7	5.9	4.8
20	—	20.2		33.8	6.1	5.1
22	7/8	22.5	+1.0 0	37.7	6.8	5.6
24	—	24.5	+1.0 0	40.3	7.1	5.9
—	1"	26	+1.0 0	42.8	7.5	6.4
27	—	27.5	+1.2 0	45.3	7.9	6.8
—	1"-1/8	29.3		47.9	8.3	7.1
30	—	30.5		49.9	8.7	7.5
—	1"-1/4	32.5		52.7	9.1	7.9
33	—	33.5	+1.4 0	54.7	9.5	8.2
—	1"-3/8	35.8		57.8	9.9	8.7
36	—	36.5		59.1	10.2	9
39	1"-1/2	39.5		63.1	10.7	9.5
42	—	45	+0 -1.4	65	10	8
45	—	48	+0 -1.5	72	12	9
48	—	51		75	12	9
52	—	55		79	12	9
56	—	60	+0 -2.0	85	12	9
60	—	63	+0 -2.0	88	12	9
64	—	68	+0 -3.0	92	12	9
68	—	72		96	12	9.2
72	—	76		100	12	9.2
76	—	80		106	12.6	9.2
80	—	85	+0 4.0	111	12.6	9.2
90	—	95		121	12.6	9.2
100	—	105		131	12.6	9.2