ASME B 18.6.3 (T12-I/T12-IA+T40) - 2013 Undercut Oval 82-deg Countersunk Head Tapping Screws - Type AB and ABR

Unit:

Thread Size
d

d
PP
M₁	Ref.
M₂	Ref.
P	Type I	max
		min
	Type IA	max
		min
Socket No.	Type I
	Type IA
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
0.068	0.070	0.106
0.068	0.070	0.106
0.038	0.041	0.062
0.020	0.023	0.045
0.040	0.043	0.062
0.024	0.027	0.046
0	0	1
0	0	1
0.112	0.137	0.162
0.096	0.120	0.144
0.025	0.031	0.036
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,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.
③,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.
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 (T8-I/T8-IA+T40) - 2013

Cross recessed raised 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 (R2010)

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

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 18.6.4 - 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]