608 Pcs Hex Screw and Nut Set Metric Bolts and Nuts - Heavy Duty Kit

In this review the 608 Pcs Hex Screw and Nut Set is evaluated for DIYers, tradespeople and workshop owners who need a comprehensive metric hardware assortment. The bottom line: this kit stands out for its broad range of common sizes and durable 304 stainless steel construction, making it a reliable choice when replacing missing fasteners or stocking up for heavy duty projects. It is particularly useful for furniture, bicycles, bed frames and outdoor equipment where corrosion resistance and size selection matter most.

Key Features

• Comprehensive assortment: Includes bolts, hex nuts, lock washers and flat washers in M5, M6, M8, M10 and M12 so a single kit covers most repair and assembly needs.
• 304 stainless steel: Corrosion resistant and moisture tolerant material provides long term durability for indoor and outdoor use.
• Wide length range: Bolts range from 20mm to 100mm which helps match fastener length to specific furniture, machinery or garden projects.
• Organized storage: All pieces come packed in a sturdy box to prevent scattering and make it easy to find sizes during work.
• Heavy duty applications: The kit is suitable for demanding tasks such as iron doors, fences, ship and dock fittings, vehicle and machine tool repairs.

Who It's For

This set is aimed at homeowners, handymen and small workshop operators who frequently perform maintenance, furniture assembly or outdoor repairs and appreciate having a range of metric fasteners on hand. The durable 304 stainless composition makes it especially suited to projects exposed to moisture or where corrosion resistance is required.

People who only need a few specialty fasteners or who require non-metric sizes should look elsewhere, since this kit is focused on metric M5-M12 sizes and general purpose hardware rather than imperial or specialty head types.

Pros & Cons

Pros

• High quality 304 stainless steel resists rust and corrosion for outdoor and marine use.
• Extensive size selection and multiple lengths reduce trips to the hardware store and solve common repair needs.
• Well organized in a sturdy storage box so parts stay sorted and accessible on the job.

Cons

• Kit uses metric sizes only, so it is not suitable for projects that require imperial fasteners.

Specifications

Our Verdict

The 608-piece hex screw and nut assortment is a practical, value-packed kit for anyone who needs a ready supply of metric fasteners for heavy duty and outdoor projects. With 304 stainless steel parts, varied lengths and an organized box, it saves time and reduces the chance of mismatched hardware. Buy this if you work with metric fittings frequently and want a durable, all-in-one solution.

Frequently Asked Questions

Are these bolts rust resistant?
Yes. The bolts and nuts are made from 304 stainless steel, which offers good resistance to rust and corrosion.

Does the kit include washers and lock washers?
Yes. The set includes flat washers and lock washers for M5 and M6 (and corresponding counts for other sizes) to support secure assemblies.

Is this kit metric only?
Yes. The assortment covers metric sizes M5 through M12 and does not include imperial sizes.