Drive Tool Sizes

Screw
Size
Phillips Bit Size
Slotted Bit Size
Torx Bit Size
Socket Size
Hex Key Size
0
0 
 
 
 
.050 
1
0 
 
 
 
1/16 
2
1 
00 
 
1/8 
5/64 
3
1 
00-0 
 
1/8 
5/64 
4
1 
0-1 
TX-10 
3/16 
3/32 
6
2 
1-2 
TX-15 
1/4 
7/64 
8
2 
2-3 
TX-20 
1/4 
9/64 
10
3 
3-4 
TX-25 
5/16 
5/32 
12
3 
3-4 
TX-27 
5/16 
 
1/4
3 
4-5 
TX-30 
3/8 
3/16 
5/16
4 
5-6 
TX-40 
1/2 
1/4 
3/8
4 
 
 
6/16 
5/16 
7/16
 
 
 
5/8 
3/8 
1/2
4 
 
 
3/4 
3/8 
5/8
 
 
 
15/16 
1/2 
3/4
 
 
 
1 1/8 
5/8 
7/8
 
 
 
1 5/16 
3/4 
1
 
 
 
1 1/2 
3/4 
1 1/8
 
 
 
1 11/16 
7/8 
1 1/4
 
 
 
1 7/8 
7/8 
1 1/2
 
 
 
2 1/4 
1 

Torque Tensioning
Screw Point Types
Pilot Hole Sizes

Bolt & Screw Head Types

Weights per Thousand
Unified External Screw Threads

Rod & Bolt Diameters
Metric Conversions
Hole Sizes for Die Casting

Material Strength
Drive Tool Sizes
Hardness Conversions

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PO Box 17211, Cleveland, OH, 44117
Telephone: 216-383-0225 • Fax: 216-481-4427
E-mail: sales@elginfastenersinternational.com

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