Click Specification

Metric 90°Countersunk Square Bolts

BS 4933 - 1973

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d

M10

M12

M16

M20

M24

P	Pitch
d_s	max
d_s	min
d_k	max
d_k	min
k	max
k	min
s	max
s	min

0.8	1	1.25	1.5	1.75	2	2.5	3
5.48	6.48	8.58	10.58	12.7	16.7	20.84	24.84
4.52	5.52	7.42	9.42	11.3	15.3	19.16	23.16
10	12	16	20	24	32	40	48
8.5	10.2	13.6	17	20.4	27.2	34	40.8
4.75	5.75	7.9	9.4	10.9	14.1	18.1	21.3
4	5	7	8.5	10	13	17	20
5.48	6.48	8.58	10.58	12.7	16.7	20.84	24.84
4.52	5.52	7.42	9.42	11.3	15.3	19.16	23.16

①,if L≤125mm时，then b=2d+6；
if 125＜L≤200mm时，then b=2d+12；
if L＞200mm时，then b=2d+25；
②,Standard nominal lengths are not specified in this standard, it may however, as a result of experience of usage,be possible to include these details at a future revision.

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Similar Standards

1	[DIN] DIN 608 - 1981	Flat Countersunk Square Neck Bolts With Short Square View Suppliers
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6	[DIN] DIN 605 - 2010	Flat Countersunk Head Square Neck Bolts With Long Square
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13	[ASME/ANSI] ASME/ANSI B 18.5 - 2012	114-deg Countersunk Square Neck Bolts,(Inch Series) [Table 8] (A307, SAE J429, F468, F593)
14	[ASME/ANSI] ASME/ANSI B 18.5 - 2012	Large Countersunk Square Neck Bolts [Table9]
15	[ASME/ANSI] ASME/ANSI B 18.5 - 2008	114° Countersunk square neck bolts
16	[UNI] UNI 6104 - 1975	Flat Countersunk Square Neck Bolts - Grade C
17	[GB] GB 10 - 1976	Countersunk head square neck bolts
18	[GB] GB /T 10 - 2013	Countersunk Head Square Neck Bolts
19	[BS] BS 4933 - 1973	Metric 120°Countersunk Head Square Neck Bolts
20	[GB] GB /T 10 - 1988	Flat Countersunk Square Neck Bolts
21	[BS] BS 325 - 1947	Black Countersunk Square Neck Bolts For Iron
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23	[GB] GB /T 21934 - 2008	Earth-Moving Machinery - Plough Bolt
24	[CNS] CNS 4418 - 1981	Countersunk Head Square Neck Bolt
25	[CNS] CNS 4419 - 1981	120°Flat Countersunk Head Short Square Neck Bolts