Mount and Bolt Size Reference

BOLT SIZES USA
in size order
#8#103/161/45/163/81/25/8

 

____________________________________________________________________________________________

 

Comparison Chart
SIZES INCH with the bolts that go in them
HOLE
sizes

 

 .171 

 

 .193 

 

.218

 

.265

 

.272

 

.281

 

.330

 

.343

 

.406

 

.437

 

.531

 

.562

BOLT
inches

 

#8

 

#10

 

#10

 

1/4"

 

1/4"

 

1/4"

 

5/16"

 

5/16"

 

3/8"

 

3/8"

 

1/2"

 

1/2"

 METRIC -------- 5mm  6mm  6mm  6mm  8mm  8mm  10mm  10mm  12mm  12mm 

 

This website requires cookies to provide all of its features. For more information on what data is contained in the cookies, please see our Privacy Policy page. By using this site you acknowledge that you have read, understood, and agreed to our privacy policy and the use of cookies.

Allow