Attributes

Brand	-
Category	Industrial Small Parts / Connectors and Fasteners
Origin	-
Material	T2 Pure Copper
Thread Standard	Metric Coarse (ISO)
Available Sizes	M3, M4, M5, M6, M8, M10, M12, M16
Surface Finish	Natural Copper (Untreated)
Hardness	HV 80-110
Electrical Conductivity	≥98% IACS
Package Type	Segmented Storage Box
Total Piece Count	520 Pieces
Net Weight	1.35 kg
Application	Electrical Grounding, Busbars, DIY Electronics

5 reviews

Anonymous

Apr 21, 2026

Rating: 5/5

Professional quality

We use these in our workshop for custom electrical panels. Consistent threading and good finish.

Anonymous

Apr 05, 2026

Rating: 5/5

Great for grounding projects

The conductivity is excellent. I used the M8 nuts for my solar setup and they fit perfectly. Box is sturdy.

Anonymous

Mar 31, 2026

Rating: 5/5

Well organized kit

Love the segmented box. Makes finding the right spacer size very easy. Copper quality looks pure.

Anonymous

Mar 15, 2026

Rating: 4/5

Good value but soft

Just remember copper is softer than steel. Don't overtighten or you might strip the threads. Otherwise great.

Anonymous

Mar 03, 2026

Rating: 5/5

Exactly as described

Needed specific M6 washers for a vintage radio restoration. These matched perfectly. Fast shipping too.

5 FAQ

Q: What is the inner diameter of the M10 spacer?

A: The M10 spacer has an inner diameter of 10.5mm to fit M10 bolts.

Q: Do you offer bulk pricing for 10 kits?

A: Please contact our sales team for bulk order discounts.

Q: Are these nuts compatible with stainless steel bolts?

A: Yes, but galvanic corrosion may occur over time in wet environments.

Q: Is the copper oxygen-free?

A: This is T2 copper which is standard electrolytic tough pitch copper.

Q: Can these be used in high vibration areas?

A: We recommend using the included spring washers and thread locker for high vibration applications.

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