50pcs M4 ( 4mm ) Black Self Colour 12.9 High Tensile Socket Cap Screws Allen Bolts HT M4 Socket Cap Screws , High Tensile Grade 12.9 , ** NOTE : Stainless bolts are not recommended for replacing high tensile bolts. & ** Not all threaded full length Application For high stress applications or for when a high strength fastener is required. ** Screws 30mm & Over Are Not Threaded Full Length Dimensions : Tensile Strength : 12.9 , Standard : DIN 912 , Head Type : Socket Cap , Head Diameter : 7mm , Head Height : 4mm , Thread Diameter : 4mm , Thread Pitch : 0.7mm , Threaded Approx : 20mm , Allen Key/ Wrench Size : 3mm (Screw Length Does Not Include Head) It's brand new, good quality & high performance. ** Please check & Making sure the accurate size before placing order. Free Shipping & the deliver time to USA is approx. 10-18 days after the shipment date.