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Type D Double Coil Spring Washers

BS 1802 (D) - 1951

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Thread Size
d

1/8
6 B.A.

5/32
4 B.A.

3/16
2 B.A.

1/4

5/16

3/8

7/16

1/2

9/16

D	in.
w	in.
w	S.W.G.
T	in.
T	S.W.G.

0.237	0.300	0.364	0.513	0.576	0.694	0.757	0.851	1.008
0.048	0.064	0.080	0.116	0.116	0.144	0.144	0.160	0.192
18	16	14	11	11	9	9	8	6
0.032	0.032	0.032	0.040	0.048	0.048	0.064	0.064	0.064
21	21	21	19	18	18	16	16	16

Thread Size
d

5/8

3/4

7/8

1-1/8

1-1/4

1-3/8

1-1/2

D	in.
w	in.
w	S.W.G.
T	in.
T	S.W.G.

1.071	1.236	1.401	1.566	1.749	1.936	2.061	2.312
0.192	0.212	0.232	0.252	0.281	0.312	0.312	0.375
6	5	4	3	/	/	/	/
0.080	0.080	0.092	0.128	0.128	0.128	0.128	0.128
14	14	13	10	10	10	10	10

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Similar Standards

1	[GB] GB /T 93 - 1987	Single Coil Spring Lock Washers, Normal Type View Suppliers
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33	[BS] BS 4464 - 1969	Metric Spring Lock Washers - Type B
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35	[JIS] JIS B 1251 (SW/No.3) - 2001	Spring Washers - Heavy Type [Table 2] SW/No.3
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43	[IS] IS 6755 - 1980 (R2001)	Double Coil Helical Spring Washers
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47	[CNS] CNS 4255 - 1978	Spring Lock Washers with Safety Ring
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