Kadrick Metric Flange Bolt Assortment Kit 700Pc - Heavy Duty Set

In this review of the Kadrick Metric Flange Bolt Assortment Kit, 700 pieces, the bottom line is simple: this kit is for people who need a broad, reliable selection of M6, M8 and M10 flange bolts, nuts, and washers for workshop, automotive, or hobby use. The single biggest reason to buy is the comprehensive quantity and mixed sizes that cover common fastening needs, presented in a durable kit that keeps hardware accessible. The review focuses on build quality, variety, and whether the set earns its place as a practical backup for projects.

Key Features

• Comprehensive set: The kit contains 700 pieces including bolts, nuts, flat washers and lock washers, providing a deep assortment for varied fastening tasks.
• Multiple sizes: Bolts are supplied in M6, M8 and M10 diameters with lengths ranging from 12mm to 45mm to cover common repair and assembly use cases.
• High-strength material: Carbon steel bolts rated at strength class 8.8 give solid mechanical performance and can handle higher preload forces.
• Corrosion protection: An environmentally friendly trivalent chromate plating reduces rust risk and makes the hardware suitable for indoor and some outdoor applications.
• Serrated flange design: The flange with serrations increases resistance to loosening, which is helpful for components subject to vibration.
• Practical packaging: The set is packaged for storage and transport, making it easy to keep a ready supply at a bench or in a toolbox.

Who It's For

This kit is aimed at DIYers, small repair shops, automotive hobbyists and makers who want a ready stock of metric flange bolts and complementary nuts and washers. It is especially useful for those who frequently assemble brackets, panels or 3D-printed parts and need a variety of sizes without repeated small purchases.

Those who should look elsewhere include users who require stainless steel or specialty alloy fasteners for corrosive environments, or projects demanding precision tolerance fasteners beyond a general-purpose kit. For critical aerospace or marine applications a material upgrade would be advisable.

Pros & Cons

Pros

• Large 700-piece count provides strong value and reduces the need to reorder small quantities.
• Strength class 8.8 carbon steel offers reliable mechanical performance for most workshop uses.
• Environmentally friendly trivalent chromate plating helps protect against rust for general indoor and outdoor use.
• Serrated flanged heads improve grip in vibration-prone assemblies.

Cons

• Some customers report occasional mixing of small parts in compartments, which can slow selection for detailed tasks.
• Not stainless steel, so prolonged exposure to harsh outdoor conditions may still cause corrosion over time.

Specifications

Pieces included	700 total (bolts, nuts, flat washers, lock washers)
Bolt diameters	M6-1.0, M8-1.25, M10-1.25
Bolt lengths	Range from 12mm to 45mm (various counts per size)
Material	Carbon steel, strength class 8.8
Finish	Trivalent chromate plating (black zinc appearance)
Kit weight	Over 8 lb total
Included fastener counts	Approximately 175 each of bolts, nuts, flat washers, lock washers

Our Verdict

The Kadrick 700-piece flange bolt kit is a practical, cost-effective choice for hobbyists, home mechanics and small workshops who need a broad assortment of common metric fasteners. Its combination of strength class 8.8 carbon steel, protective plating and serrated flanges makes it good value for general repairs and assemblies, though users needing stainless or specialty materials should consider alternatives.

Frequently Asked Questions

Are all bolt sizes included labeled?
The kit lists specific M6, M8 and M10 lengths and quantities and the packaging separates items to help identify sizes, though small parts can sometimes mix.

Is the coating suitable for outdoor use?
The trivalent chromate plating provides corrosion resistance for many indoor and light outdoor uses, but it is not a substitute for stainless steel in highly corrosive conditions.

Can these bolts handle heavy loads?
Bolts are carbon steel class 8.8, offering solid mechanical strength for most workshop and automotive tasks but not for specialized structural or aerospace needs.