Allen Key

Metric Allen Key Table

Allen Keys are available in Long / Short Arm & Tee Key Type and also available
as Hexagon Drive Bits for use with Cordless Drill Drivers & Various Hand Tools.


Socket Cap Screw
Socket Cap Screw Key Size A/F
M1.6. 1.5mm
2mm 1.5mm
2.5mm 2mm
3mm 2.5mm
4mm 3mm
5mm 4mm
6mm 5mm
8mm 6mm
10mm 8mm
12mm 10mm
14mm 12mm
16mm 14mm


Socket Button Head Screw
Socket Button Head Screw Key Size
3mm 2mm
4mm 2.5mm
5mm 3mm
6mm 4mm
8mm 5mm
10mm 6mm
12mm 8mm


Socket Shoulder Screw
Socket Shoulder Screw Key Size
6 (M5) 3mm
8 (M6) 4mm
10 (M8) 5mm
12 (M10) 6mm
16 (M12) 8mm
20 (M16) 10mm
24 (M20) 12mm