Description
Reviews
| 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 |
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.
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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