Countersunk rivet nut.Features:1,for use in soft metric hole sizes;2,high ... We can supply you full completed series.Type: flat head/ thin head/countersunk head circular body/knurled body/full-hex body/half-hex ... M3~M12 Inch Thread: UNC6-32~1/2-13Material: steel, aluminium, stainless steel, brassKey Features:1,for use in soft metric hole ... CM12(R)M121.6-513.51515181.822.5 countersunk head rivet nut