We are offering small head rivet nuts, cylindrical threaded insert, reduced countersunk head, short type, open type part no. thread size grip range hole size+0.1-0 a0.3 b max. c0.3 h0.2ss. Ma4 m4x0.7 0.5-2.0 6.40 7.20 6.35 10.40 0.45ss. Ma5 m5x0.8 0.5-3.0 7.11 8.10 7.10 11.90 0.50ss. Ma6 m6x1.0 0.5-3.0 9.60 10.50 9.50 14.50 0.60ss. Ma8 m8x1.25 0.7-3.0 10.60 11.50 10.50 16.00 0.60 otherblind pop rivets, rivet nuts, rivet nut tool, self tapping screws, socket head.