2240PCS Metric Screw Assortment,M2-M5 Metric Screw Kit, Hex Socket Metric Bolts, Metric Machine Screws 12.9 Grade Alloy Steel,Black Zinc Plated,Free Allen Head Wrench

Description

Product Overview

The Duramedal Metric Screw Assortment is a meticulously engineered collection of 2,240 precision fasteners designed to meet the demanding standards of industrial, scientific, and hobbyist applications. Each bolt and nut is forged from 12.9 grade alloy steel, a material renowned for its high tensile strength, superior fatigue resistance, and consistent performance under load. The black zinc plating adds an extra layer of corrosion protection, ensuring that the components retain their structural integrity even in humid or chemically aggressive environments.

Our assortment covers the full spectrum of metric sizes from M2 through M5, providing a versatile solution for a wide array of assemblies. The screws feature a flat countersunk head that sits flush with the material surface, delivering a clean aesthetic while minimizing stress concentrations. The accompanying nuts are fully threaded, allowing for precise torque control and secure fastening. All components are organized in a clear, sturdy compartment box that separates bolts from nuts, reducing the risk of cross‑contamination and streamlining the selection process during assembly.

Included with the kit is a complimentary Allen head wrench, ergonomically shaped for comfortable grip and accurate torque application. This tool eliminates the need for additional purchases, delivering immediate value and convenience. The packaging dimensions of 7.68 x 5.51 x 1.42 inches and a weight of 2.73 pounds make the kit portable yet robust enough to withstand the rigors of on‑site work.

Usage

Designed for versatility, this metric screw kit excels in a multitude of settings. In electronics manufacturing, the M2 and M3 sizes are ideal for securing printed circuit board (PCB) components, ensuring reliable electrical connections while maintaining a low profile. For precision machinery, the M4 and M5 bolts provide the necessary clamping force to hold gears, shafts, and housings together without deformation.

Home appliance repair technicians appreciate the kit’s ability to replace worn or stripped fasteners in washing machines, refrigerators, and air conditioners, where durability and corrosion resistance are paramount. Hobbyists working on model kits, remote‑controlled vehicles, or custom lighting installations find the assortment indispensable for fine‑tuning mechanical linkages and structural frames.

Because the screws are oil‑free and the plating is free from organic contaminants, they are safe for use in cleanroom environments and medical device assembly where particulate control is critical. The clear compartment box also aids in inventory management for workshops and small manufacturing lines, allowing users to quickly locate the exact size needed without rummaging through mixed bins.

Why Choose Us

Duramedal stands for quality, reliability, and customer‑centric design. Our metric screw assortment undergoes a rigorous quality control process that includes dimensional inspection, tensile testing, and plating thickness verification. Each batch is traceable, ensuring that any potential issues can be addressed swiftly and transparently.

Unlike generic fastener kits that rely on low‑grade materials, our use of 12.9 grade alloy steel guarantees that the screws will not shear or strip under high torque conditions. The black zinc finish not only provides superior rust resistance but also offers a sleek, professional appearance that complements modern engineering aesthetics.

We understand that after‑sales support is as important as the product itself. Our dedicated technical assistance team is available to answer any questions regarding installation, compatibility, or troubleshooting. Should you encounter any defects, we offer a hassle‑free replacement policy, reinforcing our commitment to long‑term customer satisfaction.

Key Features

• High‑strength 12.9 grade alloy steel ensures reliable performance under heavy loads.
• Black zinc plating provides excellent corrosion resistance for long‑term durability.
• Comprehensive M2‑M5 size range covers most metric fastening needs in electronics and machinery.
• Transparent compartment box keeps bolts and nuts organized, reducing assembly time.
• Free Allen head wrench included for immediate use and added value.

FAQ

What sizes are included in the kit?

The kit contains screws and nuts ranging from M2 to M5, covering all standard metric dimensions within that range.

Is the black zinc plating safe for food‑related applications?

Yes, the plating is oil‑free and meets common food‑grade safety standards, making it suitable for appliances that come into contact with food.

Can I use the included Allen wrench for other brands of screws?

The Allen wrench is a standard 2 mm size, compatible with most metric hex socket heads, but it is optimized for the screws in this kit.

How does the packaging protect the screws during shipping?

The sturdy, clear compartment box is designed to absorb shocks and keep each component securely in place, minimizing the risk of damage.

What is the return policy if a component is defective?

Duramedal offers a 30‑day replacement guarantee for any defective items, provided the issue is reported with the original purchase details.