BS 2470 - 1973 Hexagon Socket Countersunk Head Screws - Unified Thread

Unit: inch

英标BS 2470 - 1973 BS2470 2470BS Hexagon Socket Countersunk Head Screws - Unified Thread

Screw Thread
d

d_s	max
d_s	min
d_k	max
d_k	min
s	Nominal Size
t	min
b	min
k	Ref.

0.0600	0.0730	0.0860	0.0990	0.1120	0.1250	0.1380	0.1640
0.0568	0.0695	0.0822	0.0949	0.1075	0.1202	0.1329	0.1585
0.138	0.168	0.197	0.226	0.255	0.281	0.307	0.359
0.117	0.143	0.168	0.193	0.218	0.240	0.263	0.311
0.035	0.050	0.050	1/16	1/16	5/64	5/64	3/32
0.025	0.031	0.038	0.044	0.055	0.061	0.066	0.076
0.500	0.625	0.625	0.625	0.750	0.750	0.750	0.875
0.046	0.057	0.066	0.075	0.085	0.093	0.1	0.116

Screw Thread
d

10#

1/4

5/16

3/8

7/16

1/2

5/8

3/4

d_s	max
d_s	min
d_k	max
d_k	min
s	Nominal Size
t	min
b	min
k	Ref.

0.1900	0.2500	0.3125	0.3750	0.4375	0.5000	0.6250	0.7500
0.1840	0.2435	0.3053	0.3678	0.4294	0.4919	0.6163	0.7406
0.411	0.531	0.656	0.781	0.844	0.937	1.188	1.438
0.359	0.476	0.589	0.704	0.755	0.857	1.065	1.293
1/8	5/32	3/16	7/32	1/4	5/16	3/8	1/2
0.087	0.111	0.135	0.159	0.159	0.172	0.220	0.220
0.875	1.000	1.125	1.250	1.375	1.500	1.750	2.000
0.131	0.167	0.205	0.241	0.242	0.260	0.335	0.41

Similar Standards

1	[GB] GB /T 70.3 - 2008	Hexagon Socket Countersunk Head Screws Suppliers(1)
2	[GB] GB /T 70.3 - 2000	Hexagon socket countersunk head screws Suppliers(1)
3	[DIN] DIN 7991 - 1986	Hexagon Socket Countersunk Head Cap Screws Suppliers(8)
4	[ISO] ISO 10642 - 2019	Hexagon Socket Countersunk Head Screws With Reduced Loadability Suppliers(2)
5	[ISO] ISO 10642 - 2004	Hexagon Socket Countersunk Head Screws Suppliers(2)
6	[ISO] ISO 10642 - 1997	Hexagon socket countersunk head screws Suppliers(2)
7	[JIS] JIS B 1194 - 2006	Hexagon Socket Countersunk Head Screws
8	[ANSI/ASME] ANSI/ASME B 18.3.5M - 1993	Metric hexagon socket countersunk head screws
9	[ANSI/ASME] ANSI/ASME B 18.3.5M - 1986	Metric hexagon socket countersunk head screws
10	[ANSI/ASME] ANSI/ASME B 18.3.5M - 1986 (R2008)	Metric Hexagon Socket Countersunk Head Cap Screws (ASTM F835M / F879M / A1-70)
11	[ANSI/ASME] ANSI/ASME B 18.3 - 2003	Spline socket flat countersunk head cap screws
12	[UNI] UNI 5933 - 1988	Hexagon Socket Countersunk Head Screws - ISO Metric Coarse Pitch Thread - Product Grade A
13	[NF] NF E 25-146 - 2004	Hexagon Socket Countersunk Head Screws
14	[BS] BS 4168-8 - 1982	Metric Hexagon Socket Countersunk Head Screws
15	[CNS] CNS 4558 - 1981	Hexagon Socket Countersunk Head Screws
16	[DIN EN ISO] DIN EN ISO 10642 - 2013	Hexagon socket countersunk head screws Suppliers(8)
17	[DIN EN ISO] DIN EN ISO 10642 - 2004	Hexagon Socket Countersunk Head Screws Suppliers(8)
18	[DIN EN ISO] DIN EN ISO 10642 - 2020	Hexagon Socket Countersunk Head Screws
19	[ASME] ASME B 18.3 - 2012	Hexagon Socket Flat Countersunk Head Cap Screws [Table 8] (ASTM F835 / F879)
20	[ASME] ASME B 18.3 - 2003 (R2008)	Hexagon Socket Flat Countersunk Head Cap Screws