• Item:Hex Socket Set Screw, Alloy Steel Hex Socket Set Screw, Stainless Steel Hex Socket Set Screw, Hex Socket Set Screw with Cup point, Hex Socket Set Screw with Flat point, Hex Socket Set Screw with Cone point, Hex Socket Set Screw with Full Dog point, Hex Socket Set Screw with Half Dog point, Hex Socket Set Screw with Knurled point, Grub Screw
  • According To:ASME B18.3-2002
  • Material:Alloy Steel SCM435、Stainless Steel 304
  • Hardness:HRC 45~53
  • Surface Treatment:Black Oxide, Black phosphate plated, Bright Zinc plated, CR3+ plated, Black Zinc plated, Nickel plated, Nylon or ND patch
  • Screw Threads:ANSI B1.1 UNC
  • Class of Thread:ANSI B1.1 Class 3A

Unit:inch

Nominal P Q J C R Y
Size of
Basic Screw
Half Dog Point Hexagon Socket
Size
Cup and Flat
Point
Diameters
Oval Point
Diameters
Cone Point Angle
90 deg 2 deg
For These Nominal
Lengths or Longers
Diameter Length
Diameter Max. Min. Max. Min. Nom. Max. Min. Basic
#6
0.1380
0.092 0.087 0.038 0.032 1/16
0.062
0.074 0.064 0.104 0.19
#8
0.1640
0.109 0.103 0.043 0.037 5/64
0.078
0.087 0.076 0.123 0.25
#10
0.1900
0.127 0.120 0.049 0.041 3/32
0.094
0.102 0.088 0.142 0.25
1/4
0.2500
0.156 0.149 0.067 0.059 1/8
0.125
0.132 0.118 0.188 0.31
5/16
0.3125
0.203 0.195 0.082 0.074 5/32
0.156
0.172 0.156 0.234 0.38
3/8
0.3750
0.250 0.241 0.099 0.089 3/16
0.188
0.212 0.194 0.281 0.44
7/16
0.4375
0.297 0.287 0.114 0.104 7/32
0.219
0.252 0.232 0.328 0.50
1/2
0.5000
0.344 0.334 0.130 0.120 1/4
0.250
0.291 0.270 0.375 0.57
5/8
0.6250
0.469 0.456 0.164 0.148 5/16
0.312
0.371

0.347

0.469 0.75
3/4
0.7500
0.562 2.549 0.196 0.180 3/8
0.375
0.450 0.425 0.562 0.88