Taiss 3670PCS Metric Screw Assortment M2 M3 M4 M5 - Comprehensive Kit

In this review the Taiss 3670PCS Metric Screw Assortment is assessed for hobbyists, workshop users and maintenance pros who need a broad, portable selection of metric fasteners. The bottom line: this kit stands out for its sheer variety and durable 12.9 grade alloy steel construction, making it a reliable single purchase for repair, DIY and light mechanical work where threaded strength and corrosion resistance matter.

Key Features

• Large assortment: The kit includes 3,670 pieces across 33 sizes, reducing trips to the hardware store by covering common metric requirements for M2, M3, M4 and M5 fasteners.
• High strength material: Made from Grade 12.9 alloy steel, the bolts and nuts are fully threaded and offer high hardness and wear resistance for demanding applications.
• Socket and button heads: Includes both socket head and button head screws so users can choose the head style that fits their clearance and aesthetic needs.
• Washers and nuts included: Flat washers, lock washers and matching nuts are supplied for proper joint assembly and to help prevent loosening in vibration-prone environments.
• Portable storage box: The handheld box with labeled compartments keeps sizes organized and makes the kit convenient to carry and store.

Who It's For

The kit is ideal for DIYers, small workshop owners and technicians who work on furniture, machinery, motorcycles or general home repairs and want a one-box solution for common metric fasteners. The variety of sizes and inclusion of nuts and washers make it practical for mixed projects where multiple diameters and lengths are needed.

It is less well suited for users who need specialty coatings, stainless steel for corrosion-critical marine use, or industrial users who require high-volume single-size production bolts; those users should look for dedicated single-size or corrosion-resistant fasteners.

Pros & Cons

Pros

• Comprehensive selection of sizes saves time when assembling or repairing varied components.
• Grade 12.9 alloy steel provides strong, long-lasting fasteners for mechanical use.
• Well labeled handheld box keeps parts organized and portable for on-site work.

Cons

• Alloy steel finish may not be the best choice where stainless corrosion resistance is required.

Specifications

Our Verdict

The Taiss 3670PCS Metric Screw Assortment is a solid value for anyone needing a broad range of strong, fully threaded metric fasteners in one organized kit. Its Grade 12.9 alloy steel fasteners and labeled portable box make it particularly useful for home workshops, motorcycle or small machinery maintenance. Buy it if you want a versatile, durable assortment; seek stainless or specialty coatings only if corrosion resistance is a top priority.

Frequently Asked Questions

Does the kit include matching nuts and washers?
Yes. The assortment contains M2 to M5 nuts, flat washers and lock washers sized to match the screws.

What material are the bolts made from?
The bolts and nuts are manufactured from Grade 12.9 alloy steel and are fully threaded for strength and wear resistance.

Is the storage box labeled for easy selection?
Yes. The handheld box includes labeled compartments so users can quickly locate the required size on the job.