1500Pcs Metric Screw Assortment Kit M3-M8 - High Strength Storage

In this review of the 1500Pcs Metric Screw Assortment Kit, the bottom line is simple: it is best for DIYers, hobbyists and maintenance pros who need a ready supply of high strength metric fasteners in one portable box. The reviewer found the double-sided large capacity storage case and the 12.9 grade carbon steel screws to be the kit's biggest asset, because it combines durability with a wide range of sizes and useful accessories so routine repairs and projects proceed without hunting for parts.

Key Features

• Large capacity packaging: The double-sided storage box keeps many fasteners organized and easy to carry, reducing time spent searching for the right part.
• Multiple metric sizes: The kit includes a wide range of common lengths for M3, M4, M5, M6 and M8 screws (10mm, 12mm, 16mm, 20mm, 25mm) so users have the sizes needed for varied projects.
• 12.9 grade high strength steel: Fasteners are made from high-strength carbon steel that is suitable for demanding applications where tensile strength matters.
• Galvanized finish: The black galvanized surface improves corrosion resistance and helps the screws tolerate harsher environments.
• Helpful accessories included: Tweezers, gloves and a set of five hex wrenches make assembly and handling small hardware easier and safer.
• Complete assortment: The kit contains screws, nuts, washers and spring washers so it covers fastening needs for electronics, appliances and hobby builds.

Who It's For

This kit is ideal for homeowners who do regular repairs, makers and 3D printing enthusiasts assembling frames and electronics, and technicians who value keeping a range of metric fasteners on hand. The combination of M3 through M8 sizes and multiple lengths means fewer trips to a parts supplier for common projects.

Those who need stainless steel or specialty-coated fasteners for marine use should look elsewhere, since this product focuses on high-strength carbon steel with a galvanized finish rather than purpose-made corrosion-proof alloys. If you require machine-grade fasteners with certified traceability for critical structural applications, a sourced industrial supplier may be more appropriate.

Pros & Cons

Pros

• Wide variety of common metric screw sizes and lengths in one organized box.
• High-strength 12.9 grade carbon steel provides superior tensile strength for demanding uses.
• Accessories like tweezers and hex wrenches improve usability for small parts work.
• Double-sided large capacity case is compact and portable while holding many components.

Cons

• Carbon steel, even galvanized, is not the same as stainless for long-term corrosion resistance in marine environments.
• No individual size counts listed on the exterior could require opening the box to confirm exact quantities.

Specifications

Product name	1500Pcs Metric Screw Assortment Kit M3-M8
Material grade	12.9 grade high strength carbon steel
Finish	Black galvanized surface
Included sizes	M3, M4, M5, M6, M8 in 10mm, 12mm, 16mm, 20mm, 25mm
Contents	Screws, nuts, washers, spring washers, tweezers, gloves, hex wrenches
Packaging	Double-sided high-capacity storage box

Our Verdict

The 1500Pcs Metric Screw Assortment Kit is a strong-value option for hobbyists, makers and maintenance users who want a broad selection of durable metric fasteners in one compact, portable case. Its 12.9 grade carbon steel hardware and included tools make it especially useful where strength and organization matter, though those needing long-term corrosion resistance should consider stainless alternatives.

Frequently Asked Questions

Are the screws suitable for electronics assembly?
Yes; the included small metric sizes like M3 and M4 are suitable for electronics and 3D printed parts where high-strength machine screws are required.

Does the kit include tools to help with tiny parts?
Yes; tweezers, gloves and five hex wrenches are supplied to help handle and fasten small components.

Is this kit rust proof?
The screws have a galvanized finish for improved corrosion resistance, but they are carbon steel rather than stainless steel, so extreme or marine environments may require stainless fasteners.