966PCS Metric Bolts and Nuts Assortment Kit - Organized Grade 8.8 Set

In this review of the 966PCS Metric Bolts and Nuts Assortment Kit, the bottom line is simple: it is a practical, heavy-duty fastener set for workshops, garages and home DIYers who need a wide range of metric sizes and reliable strength. The reviewer found the kit especially useful for automotive and furniture repairs because the components are made from hardened Grade 8.8 alloy steel and come zinc-coated to resist rust. The clear, compartmentalized case and included washers and nuts make it a single-stop solution rather than a scatter of loose parts.

Key Features

• Hardened Grade 8.8 Alloy Steel: Provides high tensile strength for demanding applications like machinery and vehicle repair.
• Complete Metric Sizes: Contains M4, M5, M6 and M8 bolts in lengths from 12mm to 30mm so users rarely need another kit for common repairs.
• Zinc-Coated Finish: Adds rust resistance for longer life in workshops and occasional outdoor exposure.
• Organized Storage Case: A transparent, compartmentalized case with clear labeling saves time by keeping sizes separated and visible.
• Includes Washers and Nuts: Spring washers and flat washers are provided alongside nuts so each bolt size has matching hardware included.
• Sturdy Shipping Protection: Foam and a rigid paper box reduce the chance of damage in transit so the kit arrives intact.

Who It's For

This kit is aimed at hobby mechanics, home DIYers and small shop owners who need a broad selection of metric bolts and matching nuts and washers for repairs or prototype builds. The combination of size variety and toughness makes it a practical choice for car, motorcycle and furniture maintenance where Grade 8.8 strength is desirable.

Those who should look elsewhere include professionals needing larger industrial fasteners beyond M8 or users who require stainless steel for continuous outdoor or marine exposure; the zinc coating is protective but not equivalent to marine-grade stainless steel.

Pros & Cons

Pros

• Well organized with clear labels, making it easy to find the right size quickly.
• Good variety of bolt lengths and sizes, reducing the need to buy individual fasteners separately.
• Durable Grade 8.8 alloy steel construction gives confidence for load-bearing tasks.
• Included washers and nuts make it a complete kit for common repairs.

Cons

• Zinc coating is rust-resistant but not a substitute for stainless steel in marine environments.
• Limited to M4-M8 sizes, so those needing larger bolts will need a different assortment.

Specifications

Product count	966 pieces
Bolt sizes	M4, M5, M6, M8
Bolt lengths	12mm to 30mm
Material	Grade 8.8 alloy steel
Finish	Zinc-coated (rust-resistant)
Included hardware	Nuts, spring washers, flat washers
Storage	Transparent compartmentalized case with labels

Our Verdict

The 966PCS Metric Bolts and Nuts Assortment Kit is a strong value for people who regularly perform automotive, motorcycle or furniture repairs and want a single, well-organized source of common metric fasteners. Its Grade 8.8 construction, zinc finish and included washers and nuts make it a convenient, reliable kit for most home and small-shop needs; however, those needing marine-grade corrosion resistance or sizes above M8 should consider specialized alternatives.

Frequently Asked Questions

Are matching nuts and washers included?
Yes, the kit includes nuts, spring washers and flat washers for the bolt sizes provided.

Is the finish rust resistant?
The fasteners have a zinc-coated finish that improves resistance to moisture and workshop exposure but is not the same as stainless steel for marine use.

What size range does the kit cover?
The bolts in the kit are M4, M5, M6 and M8 with lengths from 12mm up to 30mm.