ASME B18.6.3 (H5D-I+T1A):2024 Pan Head Combination Phillips AB/ABR Tapping Screw combines a combination drive, pan head, and tapping thread, making it suitable for light assemblies requiring tool flexibility and fast thread-forming installation.
The combination Phillips drive accommodates different tool options, helping keep production and maintenance flexible. The AB/ABR tapping thread is suitable for sheet metal, plastic, and light materials, while the pan head provides a wider bearing surface for more stable clamping.
This product can be used in appliance housings, electronic equipment, control panels, light brackets, and general industrial assemblies. Point form, material, and coating options can be selected according to the final application to improve assembly efficiency, corrosion protection, and appearance consistency.

Dimensions unit: inch
|
Thread size d |
0# |
1# |
2# |
3# |
4# |
5# |
6# |
7# |
||
|
d |
0.0600 |
0.0730 |
0.0860 |
0.0990 |
0.1120 |
0.1250 |
0.1380 |
0.1510 |
||
|
PP |
48 |
42 |
32 |
28 |
24 |
20 |
20 |
19 |
||
|
dk |
Max. |
0.116 |
0.142 |
0.167 |
0.193 |
0.219 |
0.245 |
0.270 |
0.296 |
|
|
Min. |
0.104 |
0.130 |
0.155 |
0.180 |
0.205 |
0.231 |
0.256 |
0.281 |
||
|
k |
Max. |
0.044 |
0.053 |
0.062 |
0.071 |
0.080 |
0.089 |
0.097 |
0.106 |
|
|
Min. |
0.036 |
0.044 |
0.053 |
0.062 |
0.070 |
0.079 |
0.087 |
0.096 |
||
|
R |
Min. |
0.005 |
0.005 |
0.010 |
0.010 |
0.010 |
0.015 |
0.015 |
0.015 |
|
|
n |
Max. |
0.023 |
0.026 |
0.031 |
0.035 |
0.039 |
0.043 |
0.048 |
0.048 |
|
|
Min. |
0.016 |
0.019 |
0.023 |
0.027 |
0.031 |
0.035 |
0.039 |
0.039 |
||
|
t |
Max. |
0.022 |
0.027 |
0.031 |
0.036 |
0.040 |
0.045 |
0.050 |
0.054 |
|
|
Min. |
0.013 |
0.016 |
0.020 |
0.023 |
0.027 |
0.030 |
0.033 |
0.036 |
||
|
Slot number |
0 |
0 |
1 |
1 |
1 |
2 |
2 |
2 |
||
|
M |
Reference |
0.060 |
0.067 |
0.097 |
0.105 |
0.115 |
0.152 |
0.159 |
0.170 |
|
|
P |
Max. |
0.032 |
0.040 |
0.052 |
0.061 |
0.071 |
0.072 |
0.080 |
0.089 |
|
|
Min. |
0.014 |
0.022 |
0.034 |
0.043 |
0.053 |
0.046 |
0.055 |
0.064 |
||
|
L0 ④ |
Nominal |
7/16 |
9/16 |
5/8 |
3/4 |
13/16 |
15/16 |
1 |
1-1/8 |
|
|
Y ④ |
Thread transition length (full thread) |
Max. |
0.021 |
0.024 |
0.031 |
0.036 |
0.042 |
0.050 |
0.050 |
0.053 |
|
b ④ |
Thread length (long screws) |
Min. |
0.360 |
0.440 |
0.520 |
0.590 |
0.670 |
0.750 |
0.830 |
0.910 |
|
Thread size d |
8# |
10# |
12# |
1/4 |
5/16 |
3/8 |
7/16 |
1/2 |
||
|
d |
0.1640 |
0.1900 |
0.2160 |
0.2500 |
0.3125 |
0.3750 |
0.4375 |
0.5000 |
||
|
PP |
18 |
16 |
14 |
14 |
12 |
12 |
10 |
10 |
||
|
dk |
Max. |
0.322 |
0.373 |
0.425 |
0.492 |
0.615 |
0.740 |
0.863 |
0.987 |
|
|
Min. |
0.306 |
0.357 |
0.407 |
0.473 |
0.594 |
0.716 |
0.837 |
0.958 |
||
|
k |
Max. |
0.115 |
0.133 |
0.151 |
0.175 |
0.218 |
0.261 |
0.305 |
0.348 |
|
|
Min. |
0.105 |
0.122 |
0.139 |
0.162 |
0.203 |
0.244 |
0.284 |
0.325 |
||
|
R |
Min. |
0.015 |
0.020 |
0.025 |
0.035 |
0.040 |
0.040 |
0.050 |
0.055 |
|
|
n |
Max. |
0.054 |
0.060 |
0.067 |
0.075 |
0.084 |
0.094 |
0.094 |
0.106 |
|
|
Min. |
0.045 |
0.050 |
0.056 |
0.064 |
0.072 |
0.081 |
0.081 |
0.091 |
||
|
t |
Max. |
0.058 |
0.068 |
0.077 |
0.087 |
0.106 |
0.124 |
0.142 |
0.161 |
|
|
Min. |
0.041 |
0.048 |
0.055 |
0.063 |
0.076 |
0.090 |
0.105 |
0.118 |
||
|
Slot number |
2 |
2 |
3 |
3 |
4 |
4 |
4 |
4 |
||
|
M |
Reference |
0.175 |
0.192 |
0.252 |
0.274 |
0.343 |
0.382 |
0.406 |
0.428 |
|
|
P |
Max. |
0.097 |
0.113 |
0.124 |
0.144 |
0.173 |
0.213 |
0.239 |
0.260 |
|
|
Min. |
0.071 |
0.089 |
0.098 |
0.118 |
0.149 |
0.190 |
0.214 |
0.235 |
||
|
L0 ④ |
Nominal |
1-1/4 |
1-3/8 |
1-5/8 |
1-13/16 |
1-13/16 |
1-7/8 |
1-7/8 |
1-7/8 |
|
|
Y ④ |
Thread transition length (full thread) |
Max. |
0.056 |
0.062 |
0.071 |
0.071 |
0.083 |
0.083 |
0.100 |
0.100 |
|
b ④ |
Thread length (long screws) |
Min. |
0.980 |
1.140 |
1.300 |
1.500 |
1.500 |
1.500 |
1.500 |
1.500 |
ABOUT US
Better Fastener is a professional fastener enterprise specializing in the manufacturing of steel washers, stainless steel washers, spring washers and sealingwashers. Founded in 2001 as a washer factory, the company expanded into a comprehensive enterprise integrating washers, nuts, bolts, spring nuts and other fastener products in 2010.
The company positions itself as a provider of comprehensive one-stop services for customers, relying on technological R&D, industrial investment and trade distribution.
With an experienced professional team and a sound sales network, Better Fastener has achieved excellent sales performance in both domestic and foreign markets,and has grown into one of the competitive manufacturers and suppliers in China's industrial fastener industry.
Better Fastener is committed to becoming a trusted fastener supplier for customers with reliable product quality, reasonable prices and on-time delivery
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