ASME B 18.6.3 (H2B-I/H2B-IA+T1A) - 2024 Cross recessed raised countersunk head tapping screws - Type AB and ABR

Unit:

Thread Size
d

d	Nominal Size
PP
Socket No.
M₁	Ref.
M₂	Ref.
P	Type I	max
		min
	Type IA	max
		min
d_k	max
	min
k	Ref.
f	Ref.
α	max
	min
L₀ ^④	Nominal
Y ^④	Fully Threaded	max
b ^④	Thread Length (Long screws)	min

0.0600	0.0730	0.0860
48	42	32
0	0	1
0.068	0.070	0.106
0.068	0.070	0.106
0.038	0.041	0.062
0.020	0.023	0.045
0.042	0.043	0.062
0.024	0.027	0.046
0.112	0.137	0.162
0.096	0.120	0.144
0.035	0.043	0.051
0.021	0.025	0.029
82°	82°	82°
80°	80°	80°
7/16	9/16	5/8
0.021	0.024	0.031
0.360	0.440	0.520

①,Where specifying nominal size in decimals, zeros preceding the decimal and in the fourth decimal place shall be omitted.
②,No extrusion of excess metal beyond the apex of the point resulting from thread rolling shall be permissible . A slight rounding or truncation of the point is desirable.
③,The width of flat at crest of thread shall not exceed 0.004 in. for sizes up to and including No. 8, and 0.006 in. for larger sizes.
④,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.

GB /T 847 - 2017

Cross Recessed Raised Countersunk(Oval) Head Tapping Screws
Suppliers(1)

GB 847 - 1985

Cross Recessed Raised Countersunk Head Tapping Screws
Suppliers(1)

DIN 7983 - 1990

Cross recessed raised countersunk head tapping screws
Suppliers(1)

ISO 7051 - 2011

Cross Recessed Raised Countersunk Head Tapping Screws
Suppliers(1)

ISO 7051 - 1983

Cross recessed raised countersunk head tapping screws
Suppliers(1)

JIS B 1122 (AAT3) - 1996

Cross Recessed Raised Countersunk Head Tapping Screws - threaded portion are of class 1 to 4 [Annex attached table 3]

JIS B 1122 (AT3) - 1996

Cross recessed raised countersunk head tapping screws [Table 3]

Q 276

Cross recessed raised countersunk head tapping screws

Q 277

Cross recessed raised countersunk head tapping screws

ASME/ANSI B 18.6.3 - 2010

80° Machine Screw and Tapping Screw Nuts (Inch Seires)

NF E 25-657 - 1994

Cross Recessed Raised Countersunk (Oval) Head Tapping Screws

BS 4174 - 1972

Cross Recess 80° truncated Raised Countersunk Head Screws [Table 15]

AS /NZS 4408 - 1996

ISO metric cross recessed raised countersunk head tapping screws

KS B 1032 - 2016 (R2021)

Cross-Recessed Raised Countersunk (Oval) Head Tapping Screws

KS B 1032 - 2001

Cross-Recessed Raised Countersunk (Oval) Head Tapping Screws

DIN EN ISO 7051 - 2011

Cross-Recessed Raised Countersunk(oval) Head Tapping Screws
Suppliers(1)

ASME B 18.6.3 (H3D-I/H3D-IA+T1A) - 2024

Undercut Oval 82-deg Countersunk Head Tapping Screws - Type AB and ABR

ASME B 18.6.3 (H4D-I/H4D-IA+T1A) - 2024

Oval 82° Countersunk Trim Head Tapping Screws - Type AB and ABR

ASME B 18.6.3 (T8-I/T8-IA+T40) - 2013

Cross recessed raised countersunk head tapping screws - Type AB and ABR

ASME B 18.6.3 (T12-I/T12-IA+T40) - 2013

Undercut Oval 82-deg Countersunk Head Tapping Screws - Type AB and ABR

ASME B 18.6.3 (T16-I/T16-IA+T40) - 2013

Oval 82° Countersunk Trim Head Tapping Screws - Type AB and ABR

ASME B 18.6.5M (T14) - 2000

Mtrice PZ drives raised countersunk head tapping screws [Table 14]

ASME B 18.6.5M (T13) - 2000 (R2010)

Metric Type I Cross-Recessed Oval Countersunk Head Tapping Screws [Table 13]

ASME B 18.6.5M (T14) - 2000 (R2010)

Metric Type IA Cross-Recessed Oval Countersunk Head Tapping Screws [Table 14]

ASME B 18.6.4 - 1998

Type I Cross Recessed Oval Countersunk Head Tapping Screws - Type B and BP Thread Forming [Table 21]

ASME B 18.6.4 - 1998

Type I Cross Recessed Oval Countersunk Head Tapping Screws - Type C Thread Forming [Table 21]

ASME B 18.6.4 - 1998

Type I Cross Recessed Oval Countersunk Head Tapping Screws - Type AB Thread Forming [Table 21]

ASME B 18.6.4 - 1998

Type I Cross Recessed Oval Countersunk Head Tapping Screws - Type A Thread Forming [Table 21]

ASME B 18.6.4 - 1998

Type IA Cross Recessed Oval Countersunk Head Tapping Screws - Type B and BP Thread Forming [Table 22]

ASME B 18.6.4 - 1998

Type IA Cross Recessed Oval Countersunk Head Tapping Screws - Type C Thread Forming [Table 22]

ASME B 18.6.4 - 1998

Type IA Cross Recessed Oval Countersunk Head Tapping Screws - Type AB Thread Forming [Table 22]

ASME B 18.6.4 - 1998

Type IA Cross Recessed Oval Countersunk Head Tapping Screws - Type A Thread Forming [Table 22]

ASME B 18.6.4 - 1998

Type II Cross Recessed Oval Countersunk Head Tapping Screws - Type B and BP Thread Forming [Table 23]

ASME B 18.6.4 - 1998

Type II Cross Recessed Oval Countersunk Head Tapping Screws - Type C Thread Forming [Table 23]

ASME B 18.6.4 - 1998

Type II Cross Recessed Oval Countersunk Head Tapping Screws - Type AB Thread Forming [Table 23]

ASME B 18.6.4 - 1998

Type II Cross Recessed Oval Countersunk Head Tapping Screws - Type A Thread Forming [Table 23]

ASME B 18.6.4 - 1998

Slotted Undercut Oval Countersunk Head Tapping Screws - Type B and BP Thread Forming [Table 24]

ASME B 18.6.4 - 1998

Slotted Undercut Oval Countersunk Head Tapping Screws - Type C Thread Forming [Table 24]

ASME B 18.6.4 - 1998

Slotted Undercut Oval Countersunk Head Tapping Screws - Type AB Thread Forming [Table 24]

ASME B 18.6.4 - 1998

Type I cross recessed undercut oval countersunk head tapping screws - Type B and BP Thread Forming [Table 25]

ASME B 18.6.4 - 1998

Type I cross recessed undercut oval countersunk head tapping screws - Type C Thread Forming [Table 25]

ASME B 18.6.4 - 1998

Type I cross recessed undercut oval countersunk head tapping screws - Type AB Thread Forming [Table 25]

ASME B 18.6.4 - 1998

Type IA cross recessed undercut oval countersunk head tapping screws - Type B and BP Thread Forming [Table 26]

ASME B 18.6.4 - 1998

Type IA cross recessed undercut oval countersunk head tapping screws - Type C Thread Forming [Table 26]

ASME B 18.6.4 - 1998

Type IA cross recessed undercut oval countersunk head tapping screws - Type AB Thread Forming [Table 26]

ASME B 18.6.4 - 1998

Type II cross recessed undercut oval countersunk head tapping screws - Type B and BP Thread Forming [Table 27]

ASME B 18.6.4 - 1998

Type II cross recessed undercut oval countersunk head tapping screws - Type C Thread Forming [Table 27]

ASME B 18.6.4 - 1998

Type II cross recessed undercut oval countersunk head tapping screws - Type AB Thread Forming [Table 27]

ASME B 18.6.4 - 1998

Type I Cross Recessed Oval Countersunk Trim Head Tapping Screws - Type B and BP Thread Forming [Table 28]

ASME B 18.6.4 - 1998

Type I Cross Recessed Oval Countersunk Trim Head Tapping Screws - Type C Thread Forming [Table 28]

ASME B 18.6.4 - 1998

Type I Cross Recessed Oval Countersunk Trim Head Tapping Screws - Type AB Thread Forming [Table 28]

ASME B 18.6.4 - 1998

Type I Cross Recessed Oval Countersunk Trim Head Tapping Screws - Type A Thread Forming [Table 28]

ASME B 18.6.4 - 1998

Type IA Cross Recessed Oval Countersunk Trim Head Tapping Screws - Type B and BP Thread Forming [Table 29]

ASME B 18.6.4 - 1998

Type IA Cross Recessed Oval Countersunk Trim Head Tapping Screws - Type C Thread Forming [Table 29]

ASME B 18.6.4 - 1998

Type IA Cross Recessed Oval Countersunk Trim Head Tapping Screws - Type AB Thread Forming [Table 29]

ASME B 18.6.4 - 1998

Type IA Cross Recessed Oval Countersunk Trim Head Tapping Screws - Type A Thread Forming [Table 29]

ASME B 18.6.4 - 1998

Type II Cross Recessed Oval Countersunk Trim Head Tapping Screws - Type B and BP Thread Forming [Table 30]

ASME B 18.6.4 - 1998

Type II Cross Recessed Oval Countersunk Trim Head Tapping Screws - Type C Thread Forming [Table 30]

ASME B 18.6.4 - 1998

Type II Cross Recessed Oval Countersunk Trim Head Tapping Screws - Type AB Thread Forming [Table 30]

ASME B 18.6.4 - 1998

Type II Cross Recessed Oval Countersunk Trim Head Tapping Screws - Type A Thread Forming [Table 30]