Phillips Driver Size

-

Screw Diameter & Head Style

 Driver Bit
Size

Oval, Pan & Flat

Round &
Fillister

 Truss

Machine/
Tapping Screws

 0, 1 0, 1 0, 1 0
2, 3, 4 2, 3, 4 2, 3, 4 1
5, 6, 8, 10 5, 6, 8, 10 5, 6, 8, 10 2
12, 14 12, 14, 5/16 12, 14 3
5/16, 3/8, 7/16, 1/2 3/8, 7/16, 1/2 5/16, 3/8, 7/16, 1/2 4

Wood Screws

 0, 1 0, 11 0, 1 0
2, 3, 4 2, 3, 4 2, 3, 4 1
5, 6, 8 5, 6, 8, 10 6, 8, 10 2
10, 12, 14, 16 12, 14, 16 12,14, 16 3
18, 20, 24 18, 20, 24 18, 20, 24 4

Hex Socket Driver Sizes

Hex

Cap Screw

Button / Flat
Cap Screw

Set Screw /
Shoulder Bolt

.050

0

4

1/16

1

3, 4

5, 6

5/64

2, 3

5, 6

8

3/32

4, 5

8

10

7/64

6

-

-

9/64

8

-

-

1/8

-

10

1/4

5/32

10

1/4

5/16

3/16

1/4

5/16

3/8

7/32

-

3/8

7/16

1/4

5/16

-

1/2

Torx Screw Size Chart
Screw
Size

Socket
Set Screw

Socket
Cap Screw

 Int Hex
Washer /
Fillister / Pan		 Flat / Truss Oval / Hex
#2 T3 - T7 T6 -
#3 T5 - T8 T7 -
#4 T6 T10 T9 T8 -
#5 T7 T10 T10 T9 T10
#6 T7 T15 T15 T10 T15
#8 T8 T25 T20 T15 T20
#10 T10 T27 T25 T20 T25
#12 T10 T27 T27 T25 T27
1/4 T20 T30 T30 T27 T30
5/16 T27 T45 - T40 T40
3/8 T30 T50 T45 T40 T45
7/16 T40 T55 T50 T50 T50
1/2 T45 T55 T55 T55 T50

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