Attributes

Brand	-
Category	Root / Hardware & Tools
Origin	-
Material	304 Stainless Steel
Finish	Black Oxide Coated
Included Components	Hex Nuts, Flat Washers, Spring Washers, Screw Caps
Size Range	M3, M4, M5, M6, M8, M10
Thread Type	Metric Coarse Thread
Hardness Grade	Class 8 (Standard for 304 SS)
Corrosion Resistance	High (Suitable for Indoor/Outdoor Use)
Package Type	Bulk Wholesale Box
Application	Machinery, Automotive, DIY Projects, Furniture Assembly
Country of Origin	Imported

6 reviews

Anonymous

Mar 28, 2026

Rating: 5/5

Perfect assortment for my workshop

This kit has everything I needed for various projects. The black finish looks sleek and professional on my custom furniture builds. The variety of sizes from M3 to M10 is very convenient.

Anonymous

Mar 25, 2026

Rating: 5/5

Must-have for bulk buyers

As a small manufacturer, buying in bulk saves us a lot. The consistency in thread quality across all sizes is impressive. No stripped threads or defective pieces found so far.

Anonymous

Mar 18, 2026

Rating: 4/5

Good quality, great value

The washers and nuts fit perfectly together. The spring washers provide good tension. Only giving 4 stars because the box was slightly dented upon arrival, but the contents were fine.

Anonymous

Mar 17, 2026

Rating: 5/5

Great for automotive repairs

Used these for restoring an old motorcycle. The black stainless steel matches the engine components perfectly. Strong and durable, exactly what 304 steel should be.

Anonymous

Mar 17, 2026

Rating: 4/5

Solid hardware set

The screw caps are a nice touch that many other sets don't include. They fit snugly on the bolt ends. The only improvement would be better organization compartments in the box.

Anonymous

Mar 06, 2026

Rating: 5/5

Excellent corrosion resistance

I used these for an outdoor garden trellis project. After six months of exposure to rain, there is no sign of rust. The black coating has held up remarkably well.

5 FAQ

Q: What is the approximate count of pieces per size in the bulk box?

A: The quantities vary by size to ensure practical utility, with smaller sizes like M3 and M4 having higher counts than larger sizes like M8 and M10. Please refer to the detailed packing list in the product manual.

Q: Can these be used in marine environments?

A: While 304 Stainless Steel offers good corrosion resistance, we recommend 316 Stainless Steel for direct saltwater or harsh marine environments for maximum longevity.

Q: Does this set include the actual bolts or just the nuts and washers?

A: This specific combo set includes Hex Nuts, Flat Washers, Spring Washers, and Screw Caps. Bolts are sold separately.

Q: Are these nuts compatible with standard metric bolts?

A: Yes, this set is designed specifically for standard metric coarse thread bolts ranging from M3 to M10.

Q: Is the black coating prone to chipping during installation?

A: The black oxide finish is durable, but using proper tools and avoiding excessive torque will help prevent chipping or scratching during installation.

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