Our other sites:

What size and quantity are bolt grips available in?

Shop for Bolt Extractors

Bolt grips can be bought individually or as a set in a number of sizes. Bolts grips come in a variety of sizes in fractional measurements and millimetres. Bolt grips can be bought individually or as a set in a number of sizes, in either metric or imperial measurements.
Different bolt grip sizes.

 Bolt grip size (Fraction)

 Millimetre

 Bolt grip size (Fraction)

 Millimetre
5/16 8 11/16 17
3/8 10 3/4 19
7/16 11 13/16 21
1/2 13 7/8 22
9/16 14 15/16 24
5/8 16 1 25
Bolt sizes are measured by the nominal diameter. The nominal diameter is the width of the smooth portion under the bolt head. A bolt can, for example have a nominal thread size of M6, however, it can come in a number of lengths with the different sized heads and the same nominal diameter. Below are the dimensions of bolts available. Bolts are measured according to their nominal diameter, which is the width of the smooth portion under the bolt head. A set of bolts may all have a nominal thread size of M6, but come with a number of different lengths and head sizes. Below are the bolt dimensions available:
Different bolts nominal diameter. width and height.

 Nominal thread size

 Nominal diameter (mm)

 Width (mm)

 Height (mm)

M3 3 5.5 2.125
M4 4 7.0 2.925
M5 5 8.0 3.650
M6 6 10.0 4.150
M8 8 13.0 5.650
Different bolts nominal diameter. width and height.

Nominal thread size

 Nominal diameter (mm)

 Width (mm)

 Height (mm)

M10  10 17.0 7.180
M12  12 19.0 8.180
M14  14 22.0 9.180
M16  16  24.0 10.180
Different sized bolts, nominal diameter. width and height.

 Nominal thread size

 Nominal diameter

 Width (mm)

 Height (mm)

M18 18 27.0 12.215
M20 20 30.0 13.215
M22 22 32.0 14.215
M24 24 36.0 15.215
M27 27 41.0 17.215
M30 30 46.0 19.260
M33 33 50.0 21.260
M36 36 55.0 23.260
M39 39 60.0 25.260