Finding a versatile, durable set of metric fasteners can save time on repairs and builds. This guide highlights five top-rated metric nuts and bolts assortments that cover common sizes, materials, and storage needs. Each option includes a robust assortment, corrosion resistance, and a convenient case to keep everything organized. Read on to compare features and find the kit that best supports your projects, from home repairs to professional workloads.
| Product | Brand | Key Benefit | Size Range |
|---|---|---|---|
| Bonost 1380pcs Nuts And Bolts Assortment Kit | Bonost | Comprehensive mix with high-strength grade 8.8 fasteners | M4–M8, 12–30mm |
| Taiss 3160PCS Metric Flange Bolt Kit | Taiss | Two-layer portable toolbox with 42 sizes and labeled compartments | M2–M10, 4–45mm |
| Bonost 3010pcs Hardware Assortment | Bonost | Four trays with SAE and metric bolts, nuts, and lock washers | Metric M3–M8, many sizes |
| 1008PCS Metric Bolt Assortment | JVSRM | Heavy-duty grade 8.8 with yellow zinc coating | M4–M8 |
| Kadrick 2000PCS Metric Screw Assortment | Kadrick | ISO/DIN precision screws, high-strength 10.9 alloy steel | M2–M5 |
These selections were chosen for broad size coverage, material quality, corrosion resistance, and practical storage solutions. Each kit is designed to keep fasteners organized and accessible, reducing time spent sorting and searching during projects. The following sections dive into each option’s details, including included sizes, materials, and notable design features.
Bonost 1380pcs Nuts And Bolts Assortment Kit
The Bonost kit provides 345 pieces of metric hex bolts across 19 sizes (M4, M5, M6, M8) with lengths from 12mm to 30mm. It includes 345 nuts in four sizes and 690 lock washers, covering a wide range of DIY and professional projects. Built from premium carbon steel, these grade 8.8 fasteners resist corrosion with a yellow zinc finish to extend service life. The case is redesigned to be stackable, keep sizes separated, and include a fastener guide for quick selection.
Materials and construction are designed for reliability in hardware assemblies that demand strength and durability. The color-coded kit helps reduce the risk of using mismatched components in critical assemblies. The storage trays improve portability and organization, which is particularly beneficial for fieldwork or shop environments where space is limited.
Taiss 3160PCS Metric Flange Bolt Kit
The Taiss set centers on a two-layer portable toolbox packaging with 280 flange bolts and 2880 hex socket button & cap head bolts. The kit features 42 sizes, with labeled compartments for straightforward organization. Flange bolts, nuts, flat washers, and lock washers are included to aid a variety of mechanical assemblies. The storage solution is designed for easy transport and quick access to the right part for assembly or repair tasks.
With such a large assortment, compatibility across different projects is a core advantage. The labeled compartments help reduce the time spent sorting; however, the expansive size may be more suitable for workshops or professionals who need a wide range of fasteners in one purchase. The 3160-piece total reflects a broad coverage across both metric and head types.
Bonost 3010pcs Hardware Assortment Kit
This Bonost kit contains four trays of hardware at once: SAE Phillips head bolts, metric Phillips head bolts, and metric hex bolts totaling 1380 pieces of hex bolts with 19 sizes and matching nuts and locking washers. The steel is carbon-based with zinc coatings for corrosion resistance and longevity. An integrated case guide helps locate the correct size quickly, simplifying large-scale assembly projects and repairs that require a mix of fastener types.
Given the mixed SAE and metric components, this set is particularly versatile for both automotive and general hardware tasks. The inclusion of nuts and washers with the hex bolts reduces the need for separate purchases. The durable plastic case supports transport to job sites or home workshops where organized storage is essential.
1008PCS Metric Bolt Assortment
The 1008PCS set focuses on metric bolts and includes an array of sizes M4–M8 with grade 8.8 alloy steel and yellow zinc plating for corrosion resistance. This kit includes nuts and washers and is housed in a portable, removable divider storage box to keep fasteners organized by size. The assortment is suitable for machinery, automotive repairs, furniture assembly, and DIY projects that demand reliable fasteners with consistent thread quality.
Its compact size relative to some larger kits makes it ideal for smaller shops or home garages. The combination of strength, resistance to wear, and practical organization makes this set a strong choice when a dependable metric bolt inventory is needed for everyday tasks or occasional project work.
Kadrick Metric Screw Assortment
The Kadrick kit includes 2000 M2–M5 metric screws with lock washers and flat washers, packaged in a sturdy plastic storage box. The screws are precision-made from 10.9-grade alloy steel for high strength and accurate threads, aligning with ISO/DIN standards. Thread pitches vary by size (M2: 0.4mm, M3: 0.5mm, M4: 0.7mm, M5: 0.8mm), and lengths range from 4mm to 20mm depending on size. The kit emphasizes organized storage and easy access, suitable for electronics enclosures, apparatus assemblies, or precision equipment builds.
With a focus on high-precision components, this assortment is ideal for projects requiring tight tolerances and reliable thread engagement. The inclusion of a robust storage box helps prevent loss and cross-contamination of small parts in busy work environments. While the typical use cases are smaller fasteners, the kit’s breadth supports a variety of hobbyist to professional needs.
Buying Guide: Key Purchase Considerations And Comparisons
When choosing a metric nuts and bolts assortment, consider: intended use (DIY vs professional), required sizes and head types, and preferred material. Grade 8.8 fasteners offer strong performance for general heavy-duty tasks, while 10.9 grade options provide higher tensile strength for more demanding applications. Zinc-coated finishes provide corrosion resistance in moist or outdoor environments, extending service life but note finish durability may vary with use conditions.
Storage and organization features matter: stackable cases with labeled compartments save time and reduce misplacement. Portable toolboxes are ideal for field work, while larger shop-based kits may rely on wall-mounted organizers or larger cases with more partitions. If you need a broad, ready-to-use inventory across multiple projects, larger kits with a mix of bolt types (hex, flange, socket head) offer versatility, but may require more space and careful sorting.
Consider how you will source complementary components—nuts, washers, and lock washers—in future projects. Kits that include matching nuts and washers reduce the need for separate purchases and minimize mismatched fasteners. For electronics or precision assemblies, look for tighter tolerances and non-magnetic or corrosion-resistant options where appropriate. Always confirm the metric thread pitch and length options align with your existing hardware to ensure proper engagement.
In summary, choose a kit that aligns with your typical project scope, storage needs, and environment. For general-purpose use with strong, versatile coverage, the Bonost and JVSRM options emphasize strength and organization. If you require maximal size variety and a dedicated professional-grade toolbox, Taiss or Bonost’s multi-tray offerings may be the better fit. For precision-focused tasks, Kadrick’s ISO/DIN-compliant screws provide higher accuracy and consistent threading.