Hex Allen Head Socket Set Screws, also known as grub screws, are specialized fasteners designed for securing components in place without protruding heads. These screws are headless and have an internal hex drive, which requires an Allen key for tightening. This design allows them to sit flush with or below the surface of the material. It commonly made from stainless steel or alloy steel, they are durable and resistant to corrosion. They are widely used in mechanical systems to secure gears, pulleys, or handles to shafts. Their compact design makes them ideal for situations where space is limited or a smooth surface is required.
Product Data
Diameter
d
PP
s
t
dp
UNC
UNF
UNEF
max
min
0#
0.06
-
80
-
0.028
0.05
0.033
0.027
1#
0.073
64
72
-
0.035
0.06
0.04
0.033
2#
0.086
56
64
-
0.035
0.06
0.047
0.039
3#
0.099
48
56
-
0.05
0.07
0.054
0.045
4#
0.112
40
48
-
0.05
0.07
0.061
0.051
5#
0.125
40
44
-
0.062
0.08
0.067
0.057
6#
0.138
32
40
-
0.062
0.08
0.074
0.064
8#
0.164
32
36
-
0.078
0.09
0.087
0.076
10#
0.19
24
32
-
0.094
0.1
0.102
0.088
1/4
0.25
20
28
32
0.125
0.125
0.132
0.118
5/16
0.3125
18
24
32
0.156
0.156
0.172
0.156
3/8
0.375
16
16
32
0.188
0.188
0.212
0.194
Applications
Building Insulation: Primarily used in the installation of thermal insulation systems in residential, commercial, and industrial buildings.
External Wall Insulation: Often used in External Thermal Insulation Composite Systems (ETICS) to fix insulation boards to external walls.
Roof Insulation: Suitable for securing insulation materials on roofs to enhance energy efficiency and thermal performance.
Floor Insulation: Utilized in floor insulation systems to prevent heat loss through the flooring and improve overall energy efficiency.
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