Zinc Plated Hex Socket Cap Head Machine Screws

Zinc Plated Hex Socket Cap Head Machine Screws belong to high-precision fastening parts widely adopted in mechanical assembly fields. Ningbo Gangtong Zheli Fasteners Co., Ltd. manufactures this series with integrated cold forging and heat treatment techniques. Every batch of fasteners goes through tensile strength, hardness and salt spray testing before shipment. Zinc-plated versions achieve 48 hours of standard salt spray resistance, which matches anti-corrosion demands for indoor automation equipment.

Multiple Surface Treatment Options

Manufacturers can customize surface layers according to the working environment of Zinc Plated Hex Socket Cap Head Machine Screws. Four mature processing types are available: zinc plating, black oxide, nickel plating and stainless steel bright polishing. Zinc plating isolates metal base from oxidation, while black oxide delivers low friction for mold clamping. All coating workshops of Ningbo Gangtong Zheli Fasteners Co., Ltd. use automatic assembly lines to guarantee uniform coating thickness for every batch.

Size Range & Application Fields

Zinc Plated Hex Socket Cap Head Machine Screws cover metric sizes M2–M24, supplied in full-thread and half-thread structures. These fasteners fit injection molds, textile machinery, hydraulic equipment and automated production lines. Carbon steel raw materials are classified into 8.8, 10.9 and 12.9 tensile grades for light and heavy load installation. We stock over 200 tons of standard specifications to speed up delivery for global industrial buyers.

Strict Quality Control & Custom Service

Complete production records are reserved for all batches of Zinc Plated Hex Socket Cap Head Machine Screws. Our internal lab equips tensile testers, hardness gauges and salt spray cabinets for full performance inspection. We offer official test reports for bulk orders, and support non-standard customization on length, thread pitch and surface finish based on customers’ technical drawings.