In the fastener industry, screw quality, production capacity, and supplier stability directly impact the reliability of machinery, electronic products, and automotive parts. In 2025, buyers will increasingly focus on screw suppliers' equipment scale, material types, surface treatment capabilities, and customization service levels.
This article will provide a detailed overview of the most reputable screw factories and offer selection criteria to help buyers make informed decisions.
1. Leading Screw Factory
1.1 Zeyao
website：https://www.zeyaohardware.com/
Established: 2006
Production Experience: 19 years of professional screw and fastener manufacturing
Equipment and Capacity:
160+ production equipment, including CNC thread rolling machines, automatic tightening machines, heat treatment furnaces, and automated surface treatment lines
Monthly output exceeds 10 million pieces, supporting small-batch customization and large-volume orders
Export Coverage: Over 100 countries and regions, with over 3500 long-term cooperative clients
Material Types: Carbon steel, alloy steel, stainless steel (304/316), copper alloy
Surface Treatment: Blackening, galvanizing, nickel plating, electroplating, phosphating, anti-corrosion coating
Customization Capabilities (OEM/ODM):
Size, thread specifications, tip type (flat tip, tapered tip, cup tip)
Actuation method (internal hex, internal Torx, Phillips head, or special customization)
Surface treatment and anti-corrosion coating
Packaging and logo printing
1.2 Xincheng Fasteners
Established: 2003
Advantages:
High-precision production capabilities, CNC thread rolling machines, multiple heat treatment lines. Materials include high-strength alloy steel and stainless steel, strength grades from 4.8 to 12.9. Surface treatments include galvanizing, nickel plating, electroplating, and phosphating; some anti-corrosion coatings are customizable. Supports non-standard size customization, including special tips and drive methods.
1.3 Hengli Hardware
Established: 2010
Advantages:
High-strength screw production, suitable for automotive and construction machinery. In-house equipped with a materials laboratory, hardness tester, and torque testing equipment. Strong OEM/ODM capabilities; customizable thread specifications, materials, strength grades, and packaging.
1.4 Lianfa Fasteners
Established: 2008
Advantages:
Multiple automated production lines ensure stable delivery times for large orders. Primarily produces stainless steel and anti-corrosion screws, suitable for marine, chemical, and outdoor applications. Offers customized logos, batch numbers, and special packaging.
1.5 Jinhua Screws (Jinhua Screws)
Established: 2005
Advantages:
Wide variety of screw types: flat head, tapered head, cup head, internal hex, internal Torx
Supports non-standard thread designs
Complete quality inspection system, conforming to ISO, DIN, and ANSI standards
How to Choose a High-Quality Screw Factory?
Choosing a high-quality screw factory not only affects procurement costs but also directly impacts product quality, production efficiency, and supply chain stability. When evaluating screw suppliers, buyers should consider the following key aspects:
Production Capacity and Equipment Strength
Production Scale: A high-quality factory should have sufficient capacity to meet order demands. It should handle small-batch orders flexibly and achieve a monthly output of over ten million pieces for large orders.
Equipment Quantity and Automation Level: The factory should have at least 50 thread rolling machines, heat treatment furnaces, and surface treatment lines, along with automated assembly, tightening, and inspection equipment to ensure consistent screw dimensions and high-precision production.
Production Flexibility: The factory should be able to handle multiple specifications, materials, and surface treatments simultaneously and have the ability to adjust production lines quickly for urgent orders (typically within 48 hours).
Material and Mechanical Performance
Material Variety: A top-tier factory can provide carbon steel, alloy steel, stainless steel (304/316), copper alloys, and more, meeting strength and corrosion resistance requirements for various industrial applications.
Strength Grades Available: Multiple grades such as 4.8, 8.8, 10.9, and 12.9 ensure screws do not deform or break under different loads and environments.
Special Material Customization: High-temperature, corrosion-resistant, or wear-resistant alloys can be customized according to client requirements.
Surface Treatment Capabilities
A reliable factory should offer multiple surface treatment options, such as black oxide, zinc plating, nickel plating, electroplating, phosphating, and custom anti-corrosion coatings.
The factory should provide measurable quality data, such as salt spray test reports, to ensure screw durability and corrosion resistance under various conditions.
Customization and Technical Support
OEM/ODM Capabilities: The factory should provide custom services for non-standard thread sizes, special tip types, drive styles, and surface treatments.
Packaging and Branding Customization: Support for customer logos, batch numbers, barcodes, color boxes, or customized export packaging.
Small-Batch Prototyping and Technical Guidance: High-quality factories provide sample validation, assembly guidance, and installation solutions to ensure product quality and fit before mass production.
Quality Management and Certification
The factory should be certified with ISO9001, DIN, ANSI, or other international standards, maintaining a complete quality management system.
Full-Process Quality Control: From raw material inspection, thread rolling, heat treatment, surface treatment, to finished product inspection, ensuring each batch meets standards.
Reliability Testing: Equipped with hardness testers, torque testers, tensile testers, and vibration testing equipment to ensure screws remain secure and undamaged under high-load and high-vibration conditions.
