Attributes

Brand	-
Category	Industrial Small Parts / Connectors and Fasteners
Origin	-
Material Grade	Stainless Steel 304 (A2-70) & 316L (A4-80)
Thread Standard	ISO Metric Coarse
Size Range	M3, M4, M5, M6, M8, M10, M12, M30
Surface Finish	Plain Polished
Hardness Class	700 MPa (A2-70), 800 MPa (A4-80)
Kit Contents	Hex Nuts, Flat Washers, Spring Washers
Packaging Type	Durable Plastic Organizer Box
Corrosion Resistance	High (Marine Grade Available)
Temperature Range	-50°C to 200°C
Warranty	1 Year Limited Manufacturer Warranty

5 reviews

Anonymous

Apr 09, 2026

Rating: 4/5

Good Value

Price is reasonable for the quantity. Shipping was fast.

Anonymous

Mar 30, 2026

Rating: 5/5

Top Notch Hardware

Used the 316 nuts for my outdoor railing. No signs of rust after 6 months.

Anonymous

Mar 29, 2026

Rating: 5/5

Industrial Quality

Threads are precise and fit perfectly on standard metric bolts.

Anonymous

Mar 17, 2026

Rating: 4/5

Very Convenient

Love having all sizes in one box. One compartment was slightly cracked on arrival.

Anonymous

Jan 24, 2026

Rating: 5/5

Great for DIY

Finally a kit that has the weird sizes I always need. Highly recommend.

5 FAQ

Q: What is the difference between A2 and A4?

A: A2 is 304 stainless, A4 is 316 marine grade with higher corrosion resistance.

Q: Are the dimensions standard metric?

A: Yes, all nuts and washers conform to ISO metric standards.

Q: Does this kit include bolts?

A: No, this kit includes hex nuts and washers only. Bolts are sold separately.

Q: Can I use these for automotive exhaust systems?

A: We recommend A4-80 (316L) for high heat and corrosion areas like exhausts.

Q: Is the box stackable?

A: Yes, the design allows for secure stacking in a workshop environment.

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