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Cap nuts, or dome nuts, are designed with a rounded dome to enclose and protect the exposed threads of a bolt or stud. The GI Cap Nut – DIN 1587 is fabricated from galvanized iron, providing a corrosion-resistant finish ideal for general industrial and decorative uses. These nuts are frequently used in applications where safety, smooth finish, or visual appeal is required — including fencing, railings, mechanical joints, and exposed bolt ends.
While there is no direct ISO equivalent, DIN 1587 remains the widely recognized standard for cap nuts globally.
Roxon Fasteners – your reliable fasteners supplier in UAE and Abu Dhabi – offers a wide selection of GI dome nutsbuilt for quality and durability.
- Protective covering for exposed bolt threads
- Ideal for mechanical, automotive, and construction joints
- Decorative finish for fences, railings, and architectural fixtures
- Suitable for medium-duty fastening where thread protection is important
| Standard | DIN 1587 |
|---|---|
| Type | Dome Nut / Cap Nut |
| Thread Type | Metric, Coarse |
| Shape | Hexagonal |
| Material | Carbon Steel – Galvanized Iron |
| Surface Finish | GI – Galvanized Iron(Zinc-coated) |
| Grade/Class | Commercial Grade |
| Application Class | Non-load-bearing protection and finish |
| Available Sizes | M6 to M24 |
| Variant | Packaging |
|---|---|
| GI Cap Nut M6 | 5kg / 10 kg / 25 kg |
| GI Cap Nut M8 | 5kg / 10 kg / 25 kg |
| GI Cap Nut M10 | 5kg / 10 kg / 25 kg |
| GI Cap Nut M12 | 5kg / 10 kg / 25 kg |
| GI Cap Nut M14 | 5kg / 10 kg / 25 kg |
| GI Cap Nut M16 | 5kg / 10 kg / 25 kg |
| GI Cap Nut M18 | 5kg / 10 kg / 25 kg |
| GI Cap Nut M20 | 5kg / 10 kg / 25 kg |
| GI Cap Nut M24 | 5kg / 10 kg / 25 kg |
| GI Cap Nut M27 | 5kg / 10 kg / 25 kg |
| GI Cap Nut M30 | 5kg / 10 kg / 25 kg |