Bolt to Tool Lookup

Standard Hardware

Bolt Head Type Allen Wrench Hex Size Nut wrench size Thru Hole Size
10-32 Socket 5/32 3/8 3/16
1/4-20 Button 5/32 7/16 1/4

Nonstandard Hardware

Bolt Head Type Allen Wrench Hex Size Nut wrench size Thru Hole Size
4-40 Socket
6-32 Socket
8-32 Socket 11/32 5/32
10-32 Button 3/8 3/16
3/8-16 Socket 9/16 3/8
M3 x 0.5 Socket

Bolt Head Type

Socket Head

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Button Head

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Countersunk/Flat Head

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