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82° Slotted Undercut 82-deg Flat Countersunk Head Tapping Screws [Table 9]

For precise and reliable tapping operations, choose 82° Slotted Undercut 82-deg Flat Countersunk Head Tapping Screws. Compliant with ASME B 18.6.3 - 2013 standards, these screws ensure optimal performance and durability in various applications.

Model:ASME B 18.6.3

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Product Description

Optimized Design: ASME B 18.6.3 - 2013 specifies 82° Slotted Undercut 82-deg Flat Countersunk Head Tapping Screws, featuring an optimized design for efficient tapping operations. The undercut design enhances thread formation, promoting secure and reliable fastening in various materials.

Enhanced Stability: With a flat countersunk head and an 82° angle, these screws ensure flush installation, minimizing surface protrusion and optimizing the appearance of assembled components. This design feature also enhances stability and prevents snagging in applications where aesthetics and functionality are crucial.

Precision Tapping: Engineered for precision tapping, these screws deliver consistent and accurate thread formation, facilitating smooth installation and reliable fastening. The slotted head design enables efficient tightening and removal, enhancing productivity in assembly processes.

Durable Performance: Crafted from high-quality materials, these tapping screws offer durability and resilience in demanding environments. They withstand torque and shear forces, providing long-lasting performance and contributing to the structural integrity of assemblies.

Thread Size
d

10#

12#

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

0.0600	0.0730	0.0860	0.0990	0.1120	0.1250	0.1380	0.1510	0.1640	0.1900	0.2160
●◆▲	●◆▲	●◆▲■	●◆▲■	●◆▲■	●◆▲■	●◆▲■	●◆▲	●◆▲■	●◆▲■	●◆▲■
3/16	3/16	3/16	7/32	1/4	1/4	5/16	3/8	7/16	1/2	9/16
1/8	5/32	3/16	7/32	1/4	1/4	5/16	3/8	7/16	1/2	9/16
0.112	0.137	0.162	0.187	0.212	0.237	0.262	0.287	0.312	0.362	0.412
0.096	0.120	0.144	0.167	0.191	0.215	0.238	0.262	0.285	0.333	0.380
0.025	0.031	0.036	0.042	0.047	0.053	0.059	0.064	0.070	0.081	0.092
0.018	0.023	0.028	0.033	0.038	0.043	0.048	0.053	0.058	0.068	0.078
0.023	0.026	0.031	0.035	0.039	0.043	0.048	0.048	0.054	0.060	0.067
0.016	0.019	0.023	0.027	0.031	0.035	0.039	0.039	0.045	0.050	0.056
0.011	0.014	0.016	0.019	0.022	0.024	0.027	0.030	0.032	0.037	0.043
0.007	0.009	0.011	0.012	0.014	0.016	0.017	0.019	0.021	0.024	0.028

Thread Size
d

14#

1/4

16#

18#

5/16

20#

24#

3/8

7/16

1/2

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

0.2420	0.2500	0.2680	0.2940	0.3125	0.3200	0.3720	0.3750	0.4375	0.5000
◆	●▲■	◆	◆	●▲■	◆	◆	▲■	▲	▲
5/8	5/8	11/16	3/4	13/16	13/16	7/8	/	/	/
/	5/8	/	/	5/8	/	/	5/8	3/4	3/4
0.462	0.477	0.512	0.581	0.597	0.611	0.711	0.717	0.760	0.815
0.427	0.442	0.475	0.522	0.556	0.569	0.664	0.670	0.715	0.765
0.103	0.107	0.114	0.126	0.134	0.137	0.159	0.161	0.156	0.156
0.089	0.092	0.099	0.109	0.116	0.119	0.139	0.140	0.133	0.130
0.075	0.075	0.075	0.084	0.084	0.084	0.094	0.094	0.094	0.106
0.064	0.064	0.064	0.072	0.072	0.072	0.081	0.081	0.081	0.091
0.047	0.050	0.053	0.058	0.062	0.063	0.074	0.075	0.072	0.072
0.032	0.032	0.035	0.039	0.041	0.042	0.049	0.049	0.045	0.046

①,Edge of head may be rounded or flat.
②,Screws of these lengths and shorter shall have undercut heads.
③,● Type AB thread-forming , see table [Table 40]
◆ Type A thread-forming, see table [Table 42]
▲ Type B and BP thread forming, see table [Table 41]; Type BF and BT thread cutting, see table [Table 43]
■ 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 45]

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