Q: Hello, interested in your A-Lock Grommets. Could you tell me the difference between the #2 and #5 series? Do you have specs on Inside Diameters vs. outside diameters on each?
A-Lock units come in a few diameters. The #2 and #5 are the sizes we offer. The #2 head diameter is 11/32", and shank dia of .167". The #5 stud head diameter is 9/16", and shank dia of .265". We offer grommet flaring tools for both the #2 or #5 studs. The #2 tools are for flush head studs, and #5 for both flush and round head studs.