Allen Key for socket head screw

Choose key to suit socket head screw, dome head or grub screw as appropriate.

Key code, screws & SAILSetc products:

AK-M4-S for M4 socket head, 3.0 mm across the flats - for 068-060, INS-040 & fin bolt for SAILSetc boats

AK-M3-S for M3 socket head screw, 2.5 mm across the flats - for 068-030, 068-040, 068-050, 101-120, 101-140

AK-M2.5-S for M2.5 socket head screw, 2.0 mm across the flats - for 046-SE, 104-050 (104-SE), 104-060 (104-CH, 104-SH), 120D

AK-M3-G for M3 grub screw, 1.5 mm across the flats - for 101-100

AK-M2.5-G for M2.5 grub screw, 1.25 mm across the flats - for 025-100, 025-120, 068-025

AK-M2-G for M2 grub screw, 0.9 mm across the flats - for 044-030

Please note the difference between the size of the Allen key measured across the flats and the size of the thread of the screw that the key normally fits. For example the Allen key for a M2.5 socket head screw, ref AK-M2.5-S, is actually 2 mm across the flats.

An Allen key is also known as a wrench, hexagon wrench, hexagon key.