Factory Direct Supply Stainless Steel Round Rivet Nuts S-M3-0/1/2, British Standard Rivet Nuts, Full Range of Hex Nuts. Shenzhen Hengbo Precision Hardware Products Co., Ltd. is a professional manufacturer and supplier of various standard and non-standard fasteners. Our products are mainly used in industries such as electronics, appliances, toys, watches, furniture, lighting fixtures, computer cases, cabinets, collective boxes, sheet metal, household appliances, and communication equipment. We offer a large supply of standard PEM fasteners and non-standard metal parts: 1. Rivet Nuts (S, CLS, S