Hello, Please quote for me the following: Stainless Steel Knurled Flat Head Rivet Nuts M4 10,000 pieces M6 5,000 pieces M8 5,000 pieces 1 4" 5,000 pieces Please consider Shipping By sea and CIF Manzanillo, Mexico if is possible to you. Also please provide me dimencions, quality certification and a forma quotation Regards Federico Almazan General Manager +52