ASME B 18.6.3 (H2A+T1A) - 2024 82° Dimensions of Slotted Oval Countersunk Head Tapping Screws

Unit:

Thread Size
d

d	Nominal Size
Series ^②	Symbol
L ^③	Type A & Type AB
L ^③	Other Types
d_k	max
d_k	min
k	Ref
f	Ref.
n	max
n	min
t	max
t	min

0.0600	0.0730	0.0860
●◆▲	●◆▲	●◆▲■
3/16	3/16	3/16
1/8	5/32	3/16
0.112	0.137	0.162
0.096	0.120	0.144
0.035	0.043	0.051
0.021	0.025	0.029
0.023	0.026	0.031
0.016	0.019	0.023
0.030	0.038	0.045
0.025	0.031	0.037

①,Edge of head may be rounded or flat.
②,● Type AB thread-forming , see table [[Table 4.1.1.1-1] ◆ Type A thread-forming, see table [Table 4.1.1.4-1] ▲ Type B and BP thread forming, see table [Table 4.1.1.2-1]; Type BF and BT thread cutting, see table [Table 4.1.2.1-1] ■ Type C thread forming, see table [Table VI-1]; Type D, F, G and T thread cutting, see table [Table 44]; and Type TRS thread-rolling ,see table [Table 4.1.2.2-1]
③,Screws of these lengths and shorter shall have undercut heads. For tapping screws, use Type AB undercut head screws in place of Type A screws for these lengths and shorter.

GB /T 5284 - 2017

Slotted Raised Countersunk(Oval) Head Tapping Screws

GB /T 5284 - 1985

Slotted Raised Countersunk Head Tapping Screws

IFI 502 - 1982

Metric Slotted Oval Countersunk Head Tapping Screws

DIN 7973 - 1990

Slotted Raised Countersunk Head Tapping Screws
Suppliers(1)

ISO 1483 - 2011

Slotted Raised Countersunk (Oval) Head Tapping Screws

ISO 1483 - 1983

Slotted raised countersunk head tapping screws

JIS B 1115 (JA5) - 2015

Slotted Raised countersunk head tapping screws [Table JA5]

JIS B 1115 (T9) - 2015

Slotted Raised Countersunk Head Tapping Screws [Table 9]

JIS B 1115 (T3) - 1996

Slotted raised countersunk head tapping screws [Table 3]

JIS B 1115 (AT3) - 1996

Slotted Raised countersunk head tapping screws [Annex Table 3]

ASME/ANSI B 18.6.3 - 2010

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

NF E 25-661 - 1994

Slotted Raised Countersunk (Oval) Head Tapping Screws

BS 4174 - 1972

80°Slotted Raised Countersunk Head Tapping Screws [Table 12]

BS 4174 - 1972

Cross Recess 80° Raised Countersunk Head Tapping Screws [Table 13]

BS 4174 - 1972

Slotted 80° truncated Raised Countersunk Head Screws [Table 14]

AS /NZS 4405 - 1996

ISO metric slotted raised countersunk head tapping screws

DIN EN ISO 1483 - 2011

Slotted Raised Countersunk (Oval) Head Tapping Screws
Suppliers(1)

ASME B 18.6.3 (H3C+T1A) - 2024

80° Slotted Undercut Oval Countersunk Head Tapping Screws - Type AB、ABR

ASME B 18.6.3 (T7+T40) - 2013

82° Dimensions of Slotted Oval Countersunk Head Tapping Screws [Table 7]

ASME B 18.6.3 (T11t) - 2013

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

ASME B 18.6.5M (T12) - 2000 (R2010)

Metrice slotted raised countersunk head tapping screws [Table 12]

ASME B 18.6.4 - 1998 (R2005)

slotted Oval Countersunk Head Tapping Screws - Type B and BP Thread Forming [Table 20]

ASME B 18.6.4 - 1998 (R2005)

slotted Oval Countersunk Head Tapping Screws - Type C Thread Forming [Table 20]

ASME B 18.6.4 - 1998 (R2005)

slotted Oval Countersunk Head Tapping Screws - Type AB Thread Forming [Table 20]

ASME B 18.6.4 - 1998 (R2005)

slotted Oval Countersunk Head Tapping Screws - Type A Thread Forming [Table 20]