list includes one size smaller heads

Hexagon set screws     metric  BA  BSW  UNC  UNF

Including one size smaller heads.

Sometimes referred to as a hexagon bolt, are for securing two items together 

using a nut and washer, or sometimes secured by screwing into a tapped hole. A hexagon set screw 

is fully threaded whereas a hexagon bolt is only partially threaded, the rest of the shank is plain.This 

is for strength when the bolt has to be very secure. Hexagon screws are made of steel or brass. 

Hexagon screws are also available with a one size smaller hexagon head. These are popular in model 

engineering where realism and strength is required.

    £  each
Hexagon set screw M4    10mm 0.12
Hexagon set screw M4    16mm 0.13
Hexagon set screw M4    20mm 0.14
Hexagon set screw M4    25mm 0.16
Hexagon set screw M5    10mm 0.13
Hexagon set screw M5   16mm 0.14
Hexagon set screw M5    20mm 0.16
Hexagon set screw M5    25mm 0.18
Hexagon set screw M5    30mm 0.22
Hexagon set screw M5    35mm 0.25
Hexagon set screw M6    10mm 0.16
Hexagon set screw M6    16mm 0.18
Hexagon set screw M6    20mm 0.19
Hexagon set screw M6    30mm 0.27
Hexagon set screw M6    50mm 0.35
Hexagon set screw M8    20mm 0.27
Hexagon set screw M10    35mm 0.32
Hexagon set screw  M12     25mm 0.35
       
Hex set screw (std head) 12 BA     1/4" 0.23
Hex set screw (std head) 12 BA     3/8" 0.24
Hex set screw (std head) 12 BA      1/2" 0.25
Hex set screw (std head) 10 BA     1/4" 0.23
Hex set screw (std head) 10 BA     3/8" 0.24
Hex set screw (std head) 10 BA     1/2" 0.25
Hex set screw (std head) 10 BA     3/4" 0.26
Hex set screw (std head) 8 BA     3/8" 0.24
Hex set screw (std head) 8 BA     1/2" 0.25
Hex set screw (std head) 8 BA     3/4" 0.26
Hex set screw (std head) 8 BA 1" 0.27
Hex set screw (std head) 7 BA     1/2" 0.25
Hex set screw (std head) 7 BA     3/4" 0.26
Hex set screw (std head) 7 BA 1" 0.27
Hex set screw (std head) 6 BA 1/4" 0.23
Hex set screw (std head) 6 BA     3/8" 0.24
Hex set screw (std head) 6 BA     1/2" 0.25
Hex set screw (std head) 6 BA     3/4" 0.26
Hex set screw (std head) 6 BA 1" 0.27
Hex set screw (std head) 5 BA 1/2" 0.25
Hex set screw (std head) 5 BA 1" 0.27
Hex set screw (std head) 4 BA 1/4" 0.23
Hex set screw (std head) 4 BA 1/2" 0.25
Hex set screw (std head) 4 BA 3/4" 0.26
Hex set screw (std head) 4 BA 1" 0.27
Hex set screw (std head) 3 BA 1/2" 0.26
Hex set screw (std head) 3 BA 3/4" 0.27
Hex set screw (std head) 3 BA 1" 0.28
Hex set screw (std head) 2 BA 1/2" 0.27
Hex set screw (std head) 2 BA   3/4" 0.28
Hex set screw (std head) 2 BA 1" 0.29
      Hexagon set screws          with one size smaller heads.
Hex set screw (sml. head) 10 BA      1/4" 0.22
Hex set screw (sml. head) 10 BA      3/8" 0.23
Hex set screw (sml. head) 10 BA      1/2" 0.24
Hex set screw (sml. head)    8 BA      1/4" 0.22
Hex set screw (sml. head)    8 BA      3/8" 0.23
Hex set screw (sml. head)    8 BA      1/2" 0.24
Hex set screw (sml. head)    8 BA      3/4" 0.25
Hex set screw (sml. head)   7 BA     3/8" 0.23
Hex set screw (sml. head)   7 BA     1/2" 0.24
Hex set screw (sml. head)   7 BA 1" 0.26
Hex set screw (sml. head)    6 BA     1/4" 0.22
Hex set screw (sml. head)    6 BA      3/8" 0.23
Hex set screw (sml. head)    6 BA      1/2" 0.24
Hex set screw (sml. head)    6 BA      3/4" 0.25
Hex set screw (sml. head)    6 BA  1" 0.26
Hex set screw (sml. head)    5 BA    1/4" 0.22
Hex set screw (sml. head)    5 BA     3/8" 0.23
Hex set screw (sml. head)    5 BA     1/2" 0.24
Hex set screw (sml. head)    5 BA     3/4" 0.25
Hex set screw (sml. head)    5 BA 1" 0.26
Hex set screw (sml. head)    4 BA      1/4" 0.22
Hex set screw (sml. head)    4 BA      1/2" 0.24
Hex set screw (sml. head)    4 BA      3/4" 0.25
Hex set screw (sml. head)    4 BA  1" 0.26
Hex set screw (sml. head) 3 BA 1/2" 0.25
Hex set screw (sml. head) 3 BA 3/4" 0.26
Hex set screw (sml. head) 3 BA 1" 0.27
Hex set screw (sml. head) 2 BA 1/2" 0.26
Hex set screw (sml. head) 2 BA 3/4" 0.27
Hex set screw (sml. head) 2 BA 1" 0.28
       
Hexagon set screw 1/4" BSW 1" 0.39
Hexagon set screw 5/16" BSW 5/8" 0.36
Hexagon set screw 5/16" UNC 3/4" 0.40
Hexagon set screw 7/16" UNC 2" 0.46
Hexagon set screw 1/4" UNF 1" 0.39
Hexagon set screw 7/16" UNF 3" 0.49
Hexagon set screw 1/2" UNF 1" 0.43
       
Hexagon bolt  3/8" UNC  1 3/4" 0.33
Hexagon bolt M6    50mm 0.35
Hexagon bolt M6    60mm 0.39
Hexagon bolt M8    50mm 0.39