We are Flange Lock Nut supplier, Black Hexagon Flange Lock Nut is one of our main product. We can supply sample, OEM&ODM is welcome! Black Hexagon Lock Nuts PARAMETERS Product name Black Hexagon Lock Nuts wholesale Brand Name Wenzhou Yuanzhi Auto parts Model Number YZ-bolt-018 Material C70, 65Mn, Carbon Steel, Alloy Steel, Stainless Steel, Brass, or as OEM required Grade 4, 8, 10, AISI 2, AISI 5, AISI 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 M3-M48 , #12-3/4"or non-standard as request&design Heat Treatment Tempering, Carburizing, Spheroidizing, Annealing, Quenching, etc Test Instrument: 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