We also provide Flange Lock Nut, elf Tapping Screw, Split Washers, Weld Nuts, custom Thread Protector More information you can view here PRODUCT PARAMETERS Product name Custom Black Hexagon flange bolt Brand Name Wenzhou Yuanzhi Auto parts Model Number YZ-bolt-011 Material C70, 65Mn, Carbon Steel, Alloy Steel, Stainless Steel, Brass, or as OEM required Grade Class 4.6, 4.8, 5.6, 8.8, 10.9, SAE J429 Gr. 2, Gr. 5, Gr.8 or as required Finish Self Color, Plain, Zinc Plated ( Clear/Blue/Yellow/Black ), Ni-plated, Passivated, Polish, Black Oxide, Nickel, Chrome, Hot Deep Galvanize(H. D. G. ), etc. Standard GB, DIN, ISO, ANSI/ASTM, B7, BS, BSW, JIS, etc Size M5-M48 , #12-3/4"or non-standard as request&design Heat Treatment Tempering, Carburizing, Spheroidizing annealing, Quenching, etc Test Equipment Caliper, Tensile test machine, Hardness tester, Salt spraying tester, H.D.G thickness tester, 3D detector, Projector, Magnetic flaw detector and etc Certification ISO 9001:2015, IATF 16949:2016, ISO 1400:2015 MOQ Small order can be accepted Loading Port Ningbo or Shanghai Payment term 30% deposit in advance,70% before shipment,100% TT in advance Sample YES Delivery Time Enough stock or strong production capacity ensure timely delivery Packaging 100,200,300,500,1000PCS per bag with label,export standard carton, or according to customer special demand Design ability We can supply sample, OEM&ODM is welcome.