Click Specification

80° Slotted Undercut Oval Countersunk Head Tapping Screws [Table 11]

ASME B 18.6.3 (T11t) - 2013

Display drawing:

Thread Size
d

d	Nominal Size
PP
d_k	max
	min
k	Ref
f	Ref.
n	max
	min
t	max
	min
α	max
	min
L₀ ^①	Nominal
Y ^①	Fully Threaded	max
b ^①	Thread Length (Long screws)	min

0.0600	0.0730	0.0860	0.0990	0.1120	0.1250	0.1380	0.1510
48	42	32	28	24	20	20	19
0.112	0.137	0.162	0.187	0.212	0.237	0.262	0.287
0.096	0.120	0.144	0.167	0.191	0.215	0.238	0.262
0.025	0.031	0.036	0.042	0.047	0.053	0.059	0.064
0.021	0.025	0.029	0.033	0.037	0.041	0.045	0.049
0.023	0.026	0.031	0.035	0.039	0.043	0.048	0.048
0.016	0.019	0.023	0.027	0.031	0.035	0.039	0.039
0.028	0.034	0.040	0.047	0.053	0.059	0.065	0.071
0.022	0.027	0.033	0.038	0.043	0.048	0.053	0.059
82°	82°	82°	82°	82°	82°	82°	82°
80°	80°	80°	80°	80°	80°	80°	80°
7/16	9/16	5/8	3/4	13/16	15/16	1	1-1/8
0.021	0.024	0.031	0.036	0.042	0.050	0.050	0.053
0.360	0.440	0.520	0.590	0.670	0.750	0.830	0.910

Thread Size
d

10#

12#

1/4

5/16

3/8

7/16

1/2

d	Nominal Size
PP
d_k	max
	min
k	Ref
f	Ref.
n	max
	min
t	max
	min
α	max
	min
L₀ ^①	Nominal
Y ^①	Fully Threaded	max
b ^①	Thread Length (Long screws)	min

0.1640	0.1900	0.2160	0.2500	0.3125	0.3750	0.4375	0.5000
18	16	14	14	12	12	10	10
0.312	0.362	0.412	0.477	0.597	0.717	0.760	0.815
0.285	0.333	0.380	0.442	0.556	0.670	0.715	0.765
0.070	0.081	0.092	0.107	0.134	0.161	0.156	0.156
0.052	0.060	0.068	0.079	0.099	0.117	0.122	0.131
0.054	0.060	0.067	0.075	0.084	0.094	0.094	0.106
0.045	0.050	0.056	0.064	0.072	0.081	0.081	0.091
0.078	0.090	0.103	0.119	0.149	0.179	0.184	0.204
0.064	0.074	0.085	0.098	0.124	0.149	0.154	0.169
82°	82°	82°	82°	82°	82°	82°	82°
80°	80°	80°	80°	80°	80°	80°	80°
1-1/4	1-3/8	1-5/8	1-13/16	1-13/16	1-7/8	1-7/8	1-7/8
0.056	0.062	0.071	0.071	0.083	0.083	0.100	0.100
0.980	1.140	1.300	1.500	1.500	1.500	1.500	1.500

①,For screws of norminal lengths equal to or shorter than the nominal screw lengths, L0, listed in Table, the full-form threads shall extend close to the head such that the minor diamter limits of the specified thread are maintained to within Y daistance from the underside of the head, or closer if practicable. Screws of nominal lengths, L0, longer than those tabulated in table shall have a minimum length of full-form thread as shown in the "b Min" column of table, unless otherwise specified by the purchaser.

Alternative history

ASME B 18.6.3T11t - 2013 ASME B 18.6.3H3C+T1A - 2024

Send Inquiry

Similar Standards

1	[DIN] DIN 7973 - 1990	Slotted Raised Countersunk Head Tapping Screws View Suppliers
2	[DIN EN ISO] DIN EN ISO 1483 - 2011	Slotted Raised Countersunk (Oval) Head Tapping Screws View Suppliers
3	[ISO] ISO 1483 - 2011	Slotted Raised Countersunk (Oval) Head Tapping Screws
4	[IFI] IFI 502 - 1982	Metric Slotted Oval Countersunk Head Tapping Screws
5	[ASME] ASME B 18.6.3 (H3C+T1A) - 2024	80° Slotted Undercut Oval Countersunk Head Tapping Screws - Type AB、ABR
6	[ASME] ASME B 18.6.4 - 1998 (R2005)	slotted Oval Countersunk Head Tapping Screws - Type AB Thread Forming [Table 20]
7	[ASME] ASME B 18.6.4 - 1998 (R2005)	slotted Oval Countersunk Head Tapping Screws - Type A Thread Forming [Table 20]
8	[ASME] ASME B 18.6.4 - 1998 (R2005)	slotted Oval Countersunk Head Tapping Screws - Type B and BP Thread Forming [Table 20]
9	[ASME] ASME B 18.6.3 (T7+T40) - 2013	82° Slotted Oval Countersunk Head Tapping Screws [Table 7]
10	[ISO] ISO 1483 - 1983	Slotted Raised Countersunk Head Tapping Screws
11	[ASME] ASME B 18.6.4 - 1998 (R2005)	slotted Oval Countersunk Head Tapping Screws - Type C Thread Forming [Table 20]
12	[ISO] ISO 9268 (F1) - 1988	Metal Bone Screw with Single-slot Recess, with Symmetrical Thread Form HC [Figure 1]
13	[ASME/ANSI] ASME/ANSI B 18.6.3 - 2010	80° Machine Screw and Tapping Screw Nuts (Inch Seires)
14	[ASME] ASME B 18.6.5M (T12) - 2000 (R2010)	Metrice Slotted Raised Countersunk Head Tapping Screws [Table 12]
15	[ASME] ASME B 18.6.3 (H2A+T1A) - 2024	82° Dimensions of Slotted Oval Countersunk Head Tapping Screws
16	[NF] NF E 25-661 - 1994	Slotted Raised Countersunk (Oval) Head Tapping Screws
17	[JIS] JIS B 1115 (T3) - 1996	Slotted Raised Countersunk Head Tapping Screws [Table 3]
18	[BS] BS 4174 - 1972	80°Slotted Raised Countersunk Head Tapping Screws [Table 12]
19	[GB] GB /T 5284 - 2017	Slotted Raised Countersunk (Oval) Head Tapping Screws
20	[BS] BS 4174 - 1972	Cross Recess 80° Raised Countersunk Head Tapping Screws [Table 13]
21	[JIS] JIS B 1115 (JA5) - 2015	Slotted Raised Countersunk Head Tapping Screws [Table JA5]
22	[JIS] JIS B 1115 (T9) - 2015	Slotted Raised Countersunk Head Tapping Screws [Table 9]
23	[GB] GB /T 5284 - 1985	Slotted Raised Countersunk Head Tapping Screws
24	[JIS] JIS B 1115 (AT3) - 1996	Slotted Raised Countersunk Head Tapping Screws [Annex Table 3]
25	[BS] BS 4174 - 1972	Slotted 80° Truncated Raised Countersunk Head Screws [Table 14]
26	[GOST] GOST 1483 - 2013	Slotted Raised Countersunk Head Tapping Screws
27	[AS] AS /NZS 4405 - 1996	ISO Metric Slotted Raised Countersunk Head Tapping Screws