2001pcs Metric Bolt Assortment Kit M4-M8 - Heavy Duty Grade 8.8

In this review of the 2001pcs Metric Bolt Assortment Kit the bottom line is simple: this kit suits anyone who needs a broad range of reliable metric fasteners for workshop, garage or light industrial work. The reviewer found the set most valuable for projects that require consistent thread quality and corrosion resistance, because the kit uses grade 8.8 alloy steel with a yellow zinc plated coating and includes a wide selection of sizes and washers all organized in a removable-compartment plastic case.

Key Features

• Extensive assortment: 2001 pieces covering 20 sizes of bolts, nuts, lock washers and flat washers so you rarely run out of the common sizes needed for repairs or builds.
• Range of lengths: Bolts include M4, M5, M6 and M8 in multiple lengths from 12mm up to 40mm to match varied thicknesses and assemblies.
• High material strength: Made from grade 8.8 alloy steel which offers good tensile strength and durability for heavy duty fastening tasks.
• Corrosion resistance: Yellow zinc plated coating protects parts from rust and oxidation for longer life in mixed environments.
• Organized storage: The sturdy plastic case has removable individual compartments that keep fasteners sorted and easy to access on the job.
• Thread quality: Uniform pitch and obvious threads reduce slipping and help prevent parts from loosening under vibration.

Who It's For

This kit is designed for mechanics, hobbyists, DIYers, electricians, plumbers and builders who need a versatile, ready-to-use selection of metric bolts and nuts for machinery, motorcycles, furniture repairs, 3D printers and general garage work. The wide size spread and inclusion of washers make it a practical first kit for a small workshop.

It is less appropriate for high-spec aerospace or critical structural applications where certified specialty fasteners are required, or for users who need stainless steel fasteners for constant wet environments; in those cases a different material or certified product should be chosen.

Pros & Cons

Pros

• Large 2001pc count provides long-term supply for frequent repairs and projects.
• Grade 8.8 alloy steel and yellow zinc plating balance strength with corrosion resistance for general heavy duty use.
• Good variety of lengths across M4, M5, M6 and M8 sizes reduces trips to the parts store.
• Removable compartment case keeps fasteners sorted and portable.

Cons

• Yellow zinc plating is protective but not equivalent to stainless steel for constant marine or highly corrosive conditions.
• The kit is broad rather than specialized, so very large or very small bespoke fasteners are not included.

Specifications

Pieces	2001 pcs
Screw sizes	M4, M5, M6, M8
Lengths included	M4:12/16/20/25/30mm; M5:16/20/25/30mm; M6:12/16/20/25/30/40mm; M8:16/20/25/30/40mm
Material grade	8.8 alloy steel
Coating	Yellow zinc plated
Packaging	Sturdy plastic case with removable compartments

Our Verdict

For most DIYers, mechanics and small workshop owners this metric bolt assortment is a practical, cost-effective kit that covers the most commonly used metric sizes with good material strength and rust resistance. The organized case and broad length selection make it excellent value for routine repairs and builds, while customers needing specialty stainless or certified fasteners should select a different set.

Frequently Asked Questions

Are these bolts suitable for outdoor use?
The yellow zinc plating gives some corrosion protection for outdoor use, but for constant marine exposure stainless steel would be preferable.

Does the set include washers and lock washers?
Yes, the kit includes flat washers and lock washers alongside nuts and bolts to complete common fastening tasks.

Is the case easy to carry and organize?
Yes, the sturdy plastic case has individual removable compartments that keep pieces sorted and make it easy to take a selection to a job.