We have given a table for your easy selection of proper size of tools.
Allen key sizes for grub screws.
An allen key size chart often comes with furniture you need to build on your own such as baby cribs outdoor swings or computer desks.
Hold on to it or post it somewhere in the garage where you can hold up the key or socket screw head to the physical picture this can help you to determine which size of allen wrench you need or have on hand.
2 we use allen key or hex key allen keys or hex keys two are same but name is different in different countries for allen bolts csk bolts button head bolts and grub screw set screw.
For example for an m8 socket head cap screw we need at least 32 8 head size 40mm clearance above the screw for easy accessibility.
Refer the following table for metric allen key sizes and dimensions for corresponding socket head cap screw based on iso 4762 din 912 standards.
Allen key products button head cap screws countersunk cap screws grub screws cone point dog point flat point half dog point knurled cup point plain cup point shoulder screws socket head cap screws stainless steel fasteners bolts cable ties circlips eye u bolts furniture screws keysteel masonry fasteners nuts pins rivets screws security screws.