Color Zinc Plated Carbon Steel Round Nut, Round Locking Fastener

This Color Zinc Plated Carbon Steel Round Nut is a high-performance circular locking fastener manufactured from premium carbon steel. Utilizing integral CNC turning molding and professional color yellow zinc electroplating finish, it features excellent anti-rust, anti-oxidation, and anti-corrosion capabilities. Designed for auxiliary locking, spacing fastening, and shaft fixing applications, it is widely compatible with standard bolts, threaded studs, and screw rods. Ideal for automation machinery, electronic equipment, mechanical tooling, and general industrial assembly locking applications.

All inner threads are precisely CNC turned per metric standards. Complete neat thread profiles ensure smooth screwing without thread slipping, broken teeth, or tight jamming. Each finished round nut undergoes strict thread gauge inspection, fits matched standard screws perfectly, delivers uniform locking force, and remains securely fastened under long-term mechanical vibration.

Full-surface color zinc galvanizing treatment evenly covers thread inner walls, side walls, and end faces. The dense yellow zinc layer effectively isolates moisture, air, and industrial dust. Compared with ordinary white zinc nuts, it offers superior salt spray resistance, prevents rusting and thread blocking, adapts to both indoor workshop and light outdoor working environments, and significantly extends service life.

Manufactured from solid carbon steel via one-piece turning process, the round nut features compact internal metal structure, high overall hardness, and strong torsion resistance. The flat smooth end face ensures even stress distribution during locking. It resists cracking, deformation, and thread damage under high torque tightening, meeting demands for frequent locking and disassembly operations.

Finished with edge deburring process, the circular outer wall, thread inlet, and end corners are free of sharp burrs or flash. The smooth outer surface enables easy handling and installation, prevents scratching of mating parts, equipment shafts, and sealing components. Unified outer diameter size supports automatic batch assembly with high interchangeability.

• Mechanical shaft limit locking & spacing fixing
• Automation equipment frame and accessory fastening
• Electronic casing, household appliance internal assembly
• Industrial tooling fixture, pipeline auxiliary connection
• Equipment maintenance, standard screw matching replacement parts

• Point 1: Ordinary carbon steel nuts rust quickly and cannot be disassembled easily
  Solution: Color zinc plated protective layer improves anti-rust ability, prevents thread corrosion and sticking.
• Point 2: Irregular threads cause poor locking effect and easy loosening
  Solution: Gauge qualified standard threads realize close meshing, enhance anti-loose performance.
• Point 3: Sharp burrs scratch equipment parts during installation
  Solution: Full deburring treatment keeps overall smooth, protects mating workpiece surface.

SITUO Hardware provides full-size custom services for color zinc plated carbon steel round nuts. Custom thread sizes, outer diameters, thicknesses, and anti-loose groove structures are available. We support customized electroplating thickness and bulk export packaging. Strict incoming material and finished product inspections guarantee stable quality, supplying cost-effective round locking fasteners for industrial bulk procurement.

SITUO Hardware supplies full-size zinc plated carbon steel hex nuts from M2 to M30. Custom galvanized colors (white zinc, yellow zinc), size specifications, and bulk packaging are available. We support customized strength grade processing. With strict dimension and thread inspection, we supply qualified standard hexagonal fasteners for wholesale, project procurement, and equipment matching.

Our company employs 300 personnel, including 20 technicians, 10 engineers, and 15 quality control specialists. We operate over 300 pieces of equipment and implement 8S management systems. We have achieved ISO9001 and TS16949 automotive certifications.

Notable Customers: BO-SCH, Foxconn, Motors, Husqvarna, Shimano, NVIDIA, DJI Drones, Siegenia.