1380pcs Nuts and Bolts Assortment Kit - Heavy Duty Metric Set

In this review of the 1380pcs Nuts and Bolts Assortment Kit the bottom line is simple: it is a practical, heavy duty metric fastener set for DIYers and professionals who need a wide range of common sizes on hand. The kit stands out because of the large count and the organized stackable case, which makes finding the right M4, M5, M6 or M8 fastener quick and predictable. For anyone who repairs machinery, builds furniture or maintains outdoor structures, the assortment offers immediate, usable value without the guesswork of mixed containers.

Key Features

• 1380 piece assortment: Offers 345 bolts, 345 nuts and 690 lock washers so projects rarely stall for missing hardware.
• Wide size range: Includes 19 bolt sizes across M4, M5, M6 and M8 with lengths from 12mm to 30mm, covering many common repair and assembly needs.
• Grade 8.8 carbon steel: Provides sturdy, durable fasteners suitable for mechanical and structural uses where higher tensile strength is useful.
• Yellow zinc plating: Adds corrosion resistance and longer service life for indoor and some outdoor applications.
• Stackable plastic case: Keeps all parts neatly sorted with a fastener guide so users can carry and store the kit without mixing sizes.

Who It's For

The kit is aimed at homeowners, hobbyists and tradespeople who need a broad selection of metric hex bolts, nuts and washers for general repairs, furniture assembly and light machinery work. The quantity and organization suit those who prefer to keep a dedicated hardware set in a workshop, van or tool chest.

People who need specialized fasteners such as stainless steel, fine thread only, or larger structural bolts should look elsewhere; this set focuses on common metric sizes in grade 8.8 carbon steel with zinc coating rather than specialty alloys or extremely large diameters.

Pros & Cons

Pros

• Comprehensive count and range makes it unlikely to run out of common sizes during a job.
• Grade 8.8 carbon steel construction feels robust and suitable for general mechanical use.
• Neat, upgraded stackable case with a guide saves time when selecting parts.
• Yellow zinc plating improves corrosion resistance and appearance versus plain steel.

Cons

• Not stainless steel, so prolonged exposure to harsh outdoor conditions may still lead to corrosion over time.
• A limited number of nut sizes compared with bolts might require extra purchases for unusual matching needs.

Specifications

Total pieces	1380
Bolt count	345 metric hex bolts
Nuts	345 metric nuts in 4 sizes
Washers	690 lock washers in 8 sizes
Bolt sizes	M4, M5, M6, M8; 12mm to 30mm lengths
Material and grade	Carbon steel, grade 8.8
Finish	Yellow zinc plated

Our Verdict

The 1380pcs Nuts and Bolts Assortment Kit is a smart, cost effective option for anyone who regularly works with metric hardware and values organization. It delivers durable grade 8.8 fasteners in a convenient, stackable case and covers most everyday repair and assembly tasks, making it good value for home workshops and trade vehicles alike.

Frequently Asked Questions

Are these bolts suitable for outdoor use?
Yes, the yellow zinc plating improves corrosion resistance for many outdoor and garage applications, though stainless steel is preferable in very corrosive or marine environments.

Does the kit include a way to identify sizes?
Yes, the upgraded plastic case includes a fastener guide so sizes are easy to find and the compartments prevent mixing.

What applications are these fasteners best for?
They are well suited to machinery repairs, furniture making and general DIY or maintenance where common metric hex bolts and lock washers are required.