Click Specification

Cross recessed round head screws With Collar

ASME B 18.6.3 (T39-I) - 2013

Display drawing:

Download CAD Model

Thread Size
d

10#

12#

14#

d	Nominal Size
PP
M	Ref.
Socket No.
P	max
P	min
d_k	Ref.
d_c	max
d_c	min
k	max
k	min
c	Ref.

0.0860	0.0990	0.1120	0.1250	0.1380	0.1510	0.1640	0.1900	0.2160	0.2420
56	48	40	40	32	/	32	24	24	/
0.099	0.107	0.116	0.139	0.147	0.150	0.161	0.177	0.228	0.241
1	1	1	2	2	2	2	2	3	3
0.046	0.056	0.065	0.054	0.061	0.065	0.076	0.093	0.094	0.105
0.021	0.033	0.044	0.026	0.033	0.037	0.048	0.066	0.066	0.077
0.136	0.156	0.177	0.198	0.218	0.238	0.259	0.300	0.341	0.382
0.202	0.232	0.261	0.291	0.321	0.350	0.380	0.439	0.498	0.558
0.186	0.215	0.243	0.272	0.301	0.330	0.358	0.416	0.473	0.531
0.062	0.070	0.079	0.088	0.096	0.105	0.113	0.130	0.148	0.165
0.050	0.058	0.067	0.075	0.084	0.092	0.101	0.118	0.134	0.151
0.030	0.030	0.030	0.040	0.040	0.040	0.040	0.050	0.050	0.050

Thread Size
d

1/4

16#

18#

5/16

20#

24#

3/8

7/16

1/2

d	Nominal Size
PP
M	Ref.
Socket No.
P	max
P	min
d_k	Ref.
d_c	max
d_c	min
k	max
k	min
c	Ref.

0.2500	0.2680	0.2940	0.3125	0.3200	0.3720	0.3750	0.4375	0.5000
20	/	/	18	/	/	16	14	13
0.244	0.261	0.279	0.292	0.325	0.347	0.348	0.366	0.383
3	3	3	3	4	4	4	4	4
0.107	0.126	0.144	0.156	0.145	0.170	0.170	0.190	0.210
0.080	0.096	0.118	0.129	0.118	0.144	0.144	0.165	0.184
0.396	0.423	0.661	0.494	0.505	0.587	0.593	0.691	0.790
0.576	0.617	0.676	0.719	0.736	0.854	0.861	1.004	1.146
0.548	0.588	0.646	0.687	0.703	0.818	0.825	0.963	1.101
0.170	0.182	0.199	0.211	0.216	0.251	0.253	0.294	0.335
0.157	0.168	0.185	0.197	0.202	0.236	0.238	0.278	0.319
0.050	0.060	0.060	0.060	0.060	0.060	0.060	0.070	0.090

①,Where specifying nominal size in decimals, zeros preceding the decimal and in the fourth decimal place shall be omitted.
②,Sizes 7, 14, 16, 18, 20, and 24 are for tapping screws only.

Send Inquiry

Similar Standards

1	[ASME/ANSI] ASME/ANSI B 18.6.3 - 2003	Cross recessed round head screws View Suppliers
2	[JIS] JIS B 1111 (A6) - 2006	Cross Recessed Round Head Screws View Suppliers
3	[JIS] JIS B 1111 (A6) - 1996	Cross recessed round head screws View Suppliers
4	[JIS] JIS B 1111 (JA8) - 2017	Cross Recessed Round Head Screws View Suppliers
5	[ASME] ASME B 18.6.3 (T36-I/T36-IA) - 2013	Cross recessed round head screws
6	[DIN] DIN 967 - 1994	Cross recessed pan head screws with collar—Product grade A
7	[DIN] DIN 34812 - 1999	Plastic Pan Head Screws With Cross Recess
8	[NF] NF E 25-122 - 1984	PZ Drives Round Head Screws With Collar
9	[GOST] GOST 17473 - 1980	Half-rounded head screws, product grades A and B
10	[CNS] CNS 9676 - 1988	Cross Recessed Round Head Screws