M4 M5 M6 M6X16 50mm 65mm to 90mm Long Hexagon Hex Head Cap Screw

M4 M5 M6 M6X16 50mm 65mm to 90mm Long Hexagon Hex Head Cap Screw. Extensive Material Options: Stainless steel, carbon steel, duplex, titanium, and special alloys available. Custom Manufacturing Support: Drawing-based and sample-based production for non-standard fasteners. Full-Process Quality Inspection: Material verification, dimensional checks, mechanical testing, and hardness checks. Wide Size Range: Metric sizes M3 to M48 and imperial sizes 1/4 to 2 inches. Multiple Finish Options: Plain, passivated, zinc plated, black oxide, nickel plated, and custom finishes. Sample Service Available: Samples provided for evaluation with cost and lead time review. Global Trade Terms: Support for EXW, FOB, CFR, CIF, DDP, and other Incoterms. Advanced Testing Equipment: OES spectrometer, VMM, thread gauges, and salt spray chambers.