Metric Screw Nut

The China Metric Screw Nut from Maitu factory is a fundamental component engineered to work in precise conjunction with standard metric screw studs, creating reliable and strong delivering and fastening systems across countless industrial applications. Characterized by its internal 60° triangular thread profile that perfectly matches the external threads of metric screws, this nut is designed to deliver secure fastening through full thread engagement and optimal clamping force distribution.

A defining feature of the metric nut is its capacity to facilitate both secure fastening and, in many of our clients' applications. While its primary role is to create a vibration-resistant static joint, the standardized ISO metric profile allows it to be used effectively in lead screw mechanisms for positioning and power transmission where high efficiency is not the primary driver. This dual-purpose functionality makes it a versatile and cost-effective solution for adjustment systems, jacks, and presses.

When employed in motion transmission, the sharp crests and roots of the triangular thread profile make the assembly more susceptible to higher friction and accelerated wear compared to trapezoidal threads. Thus, the selection of nut material and the application of surface treatments become critical for enhancing performance and service life. For carbon steel nuts, treatments such as zinc plating for corrosion resistance or nickel plating for enhanced surface durability and a low coefficient of friction are commonly applied.

Maitu offers a comprehensive range of Metric Screw Nuts, available in various strength grades and material combinations. Our nuts are manufactured to precise international standards, ensuring perfect compatibility with all standard metric screws and providing stubborn, long-lasting performance for both your static fastening and dynamic motion requirements.

Production Parameters

Benefits for You

With over 12 years of professional experience in screw and nut R&D, production, and service, Maitu is dedicated to providing high-quality Metric Screw Nuts that meet international standards.

1. ISO Standard Compliance & Precise Manufacturing

       Maitu’s screw nuts are manufactured in strict accordance with international ISO standards, featuring a 60° triangular thread profile that perfectly matches the external threads of standard metric screw studs. We use high-precision processing equipment (including advanced thread rolling machines and CNC lathes) to strictly control thread tolerance (covering 4g6g, 6g, 6h and other tolerance classes) and dimensional accuracy, as detailed in our production parameters. This ensures that our nuts achieve full thread engagement and optimal clamping force distribution with all standard metric screws, avoiding mismatches and ensuring stable fastening and transmission performance for buyers.

2. Dual-Purpose Versatility

       Unlike single-function nuts, our nuts offer dual-purpose functionality that meets diverse procurement needs. Primarily, they form vibration-resistant static joints for secure fastening in various industrial equipment. Additionally, their standardized ISO metric profile makes them suitable for lead screw mechanisms in positioning and power transmission scenarios (where high efficiency is not the primary requirement), such as adjustment systems, jacks, and presses. This versatility eliminates the need for buyers to purchase different types of nuts for different applications, reducing procurement costs and inventory pressure.

3. Comprehensive Specifications & Targeted Material

       We offer a complete range of the Screw Nuts with comprehensive specifications, covering thread designations from M4 to M40, with various pitches and tolerance classes to directly meet the standard procurement needs of most industrial scenarios. Moreover, we provide targeted material and surface treatment options based on application requirements: for carbon steel nuts, zinc plating is available for corrosion resistance, and nickel plating for enhanced surface durability and low friction. This customization of material and surface treatment ensures that our nuts can adapt to different working environments, extending service life and reducing maintenance costs for buyers.

4. 12+ Years of Manufacturing Expertise & Strict Quality Control

       As a professional manufacturer with over 12 years of experience, Maitu has accumulated profound expertise in metric thread processing and nut production. We have a team of 10 technical engineers and 6 QC personnel, and implement strict quality control measures throughout the production process—from raw material inspection to finished product testing. Our self-developed ERP system tracks the entire manufacturing and quality control process, and we hold ISO 9001 certification and multiple patents, ensuring that each Metric Screw Nut meets high-quality standards and providing buyers with reliable products.

5. Flexible Service & Strong Supply Capacity

       Maitu has 4 departments and 10 production lines, with a branch factory in Dongguan, Guangdong Province, ensuring stable production capacity to meet both small-batch and large-batch procurement needs (we have served over 5,000 customers and delivered over 80,000 pieces to overseas customers in 3 years). We provide professional customization services according to buyers’ drawings and requirements, and offer pre-sales consultation to help buyers select suitable specifications, materials, and surface treatments. Our MOQ is only 1 piece, supporting trial orders and reducing the initial procurement risk for buyers.