DIN 1587 Hexagon Domed Cap Nuts are designed for fastening applications where exposed bolt threads need to be protected without affecting the overall appearance of the assembly. Their enclosed dome design covers the threaded end of the bolt, helping reduce exposure to dust, moisture, and accidental impact while providing a smooth, finished look.
Manufactured in stainless steel to DIN 1587 specifications, these cap nuts are commonly used in architectural fittings, industrial equipment, furniture manufacturing, automotive components, and fabrication projects. Along with improving the appearance of visible fasteners, the domed construction helps protect threaded connections in applications where durability and corrosion resistance are important.
Used across both functional and decorative installations, DIN 1587 Hexagon Domed Cap Nuts are suitable wherever fastening points remain visible after assembly. Their clean profile makes them a preferred choice for equipment, fabricated structures, handrails, machinery, and stainless steel installations that require both reliable fastening and a refined finish.
As an authorized stainless steel fasteners supplier, Vimal Industrial Corporation offers DIN 1587 Hexagon Domed Cap Nuts in multiple thread sizes and specifications to support diverse industrial requirements. Whether the requirement is for production, fabrication, or replacement applications, we help businesses source fastening solutions that combine thread protection, corrosion resistance, and an enhanced finished appearance.
In many industrial assemblies, the fastening job doesn’t end once a bolt is tightened. Exposed threads can collect dust, trap moisture, become damaged during handling, or affect the finished appearance of the equipment. DIN 1587 Hexagon Domed Cap Nuts solve all of these challenges with a single component by completely enclosing the threaded end of the bolt while creating a clean, finished profile.
This combination of protection and appearance makes these nuts a preferred choice for equipment manufacturers, architectural fabricators, food processing systems, handrail installations, machinery, and stainless steel structures where visible fasteners are part of the finished assembly. The enclosed dome not only protects the bolt but also helps reduce accidental contact with exposed threads in frequently accessed installations.
At Vimal Industrial Corporation, we supply DIN 1587 Hexagon Domed Cap Nuts in stainless steel through our association as an Authorized APL Fasteners Dealer. As an experienced stainless steel fasteners supplier and nut bolt supplier, we help businesses source the right fastening solutions for applications where protection, appearance, and corrosion resistance are equally important.
Not every fastening point is hidden after installation. In many assemblies, exposed bolt ends remain visible and can become vulnerable to corrosion, accidental impact, or cause an unfinished appearance. DIN 1587 Hexagon Domed Cap Nuts are specifically used in such applications, offering secure fastening while covering the exposed threads with a protective dome.
Equipment with Exposed Fastening Points – Ideal for machinery, control panels, fabricated structures, and equipment where bolt ends remain visible after assembly and require additional protection.
Architectural & Decorative Metalwork – Used in stainless steel railings, balustrades, gates, staircases, and architectural fabrications where a neat fastening finish contributes to the overall appearance of the structure.
Public Access Installations – Preferred for benches, fitness equipment, playground structures, and public infrastructure where covered bolt ends help minimise the risk of accidental contact with exposed threads.
Washdown & Corrosive Environments – Manufactured in stainless steel, these cap nuts are suitable for food processing units, pharmaceutical equipment, marine installations, and other environments where moisture resistance is an important requirement.
Equipment Requiring Frequent Maintenance – Applied in assemblies that are regularly dismantled and reassembled, helping protect bolt threads from damage during servicing while extending the usability of the fastening system.
OEM & Industrial Fabrication – Used by equipment manufacturers and fabrication units to achieve a secure threaded connection with a cleaner finished appearance, particularly in products where the fastening remains visible to the end user.
Whether protecting exposed threads, improving operator safety, or creating a cleaner finished assembly, DIN 1587 Hexagon Domed Cap Nuts provide a practical fastening solution for applications where both functionality and appearance matter. As part of a premium range of stainless steel fasteners, they are widely used across industrial, commercial, and architectural projects.
Choosing the right supplier is about more than product availability, it’s about receiving fastening components that match your specifications, application, and finishing requirements. At Vimal Industrial Corporation, we help industrial buyers source DIN 1587 Hexagon Domed Cap Nuts with the consistency and technical support required for production, fabrication, and maintenance projects.
Why clients choose us:
✅ Authorized APL Fasteners Dealer – We supply genuine APL Fasteners products with supporting product documentation wherever required.
✅ Stainless Steel Fastener Specialists – Our range includes DIN 1587 Hexagon Domed Cap Nuts in stainless steel for applications that require corrosion resistance and an enhanced finished appearance.
✅ Multiple Sizes & Specifications – Available in a wide selection of thread sizes to suit machinery, architectural fabrication, OEM manufacturing, and industrial installations.
✅ Support for Bulk & Project Requirements – Whether you’re sourcing for ongoing production or project-based procurement, we help manage orders with efficient coordination.
✅ Application-Focused Assistance – As an experienced nut bolt supplier, we assist customers in selecting fastening solutions that match their assembly and installation requirements.
✅ Reliable Procurement Experience – From enquiry to order fulfilment, we focus on clear communication, organised processing, and consistent product availability.
Whether you’re looking for a DIN 1587 Hexagon Domed Cap Nuts supplier in India or sourcing stainless steel fasteners for visible fastening applications, Vimal Industrial Corporation delivers solutions that combine protection, aesthetics, and dependable performance.
| thread | M4 | M5 | M6 | M8 | M10 | M12 | (M14) | M16 | (M18) | M20 | (M22) | M24 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Series 1 | ||||||||||||
| Series 2 | - | - | - | M8x1 | M10x1 | M12x1.5 | (M14x1.5) | (M16x1.5) | (M18x1.5) | M20x2 | (M22x1.5) | M24x2 |
| Series 3 | - | - | - | - | M10x1.25 | M12x1.25 | - | - | (M18x2) | M20x1.5 | (M22x2) | - |
| P Series 1 | 0.7 | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2 | 2.5 | 2.5 | 2.5 | 3 |
| da min. | 4 | 5 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 |
| da max. | 4.6 | 5.75 | 6.75 | 8.75 | 10.8 | 13 | 15.1 | 17.3 | 19.5 | 21.6 | 23.7 | 25.9 |
| dk max. | 6.5 | 7.9 | 9.5 | 12.5 | 15 | 17 | 20 | 23 | 26 | 28 | 33 | 34 |
| dw min. | 5.9 | 6.9 | 8.9 | 11.6 | 14.6 | 16.6 | 19.6 | 22.5 | 24.9 | 27.7 | 31.4 | 33.3 |
| e min. Product grade A | 7.66 | 8.79 | 11.05 | 14.38 | 17.77 | 20.03 | 23.35 | 26.75 | 30.14 | 33.53 | 37.72 | 39.98 |
| e min. Product grade B | 7.5 | 8.63 | 10.89 | 14.2 | 17.59 | 19.85 | 22.78 | 26.17 | 29.56 | 32.95 | 37.29 | 39.55 |
| x max. | 1.4 | 1.6 | 2 | 2.5 | 3 | 3 | - | - | - | - | - | - |
| g2 max. Series 1 | - | - | - | - | 6.4 | 7.3 | 7.3 | 9.3 | 9.3 | 9.3 | 9.3 | 10.7 |
| g2 max. Series 2 | - | - | - | - | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 7.3 | 5.6 | 7.3 |
| g2 max. Series 3 | - | - | - | - | 4.9 | - | - | - | 7.3 | 5.6 | 7.3 | - |
| h max. nominal size | 8 | 10 | 12 | 15 | 18 | 22 | 25 | 28 | 32 | 34 | 39 | 42 |
| dw min. P. grade A | 7.64 | 9.64 | 11.57 | 14.57 | 17.57 | 21.48 | 24.48 | 27.48 | 32.38 | 33.38 | 38.38 | 41.38 |
| e min. P. grade B | 7.42 | 9.42 | 11.3 | 14.3 | 17.3 | 21.16 | 24.16 | 27.16 | 31 | 33 | 38 | 41 |
| m max. | 3.2 | 4 | 5 | 6.5 | 8 | 10 | 11 | 13 | 15 | 16 | 18 | 19 |
| x max. Mw min. | 2.9 | 3.7 | 4.7 | 6.14 | 7.64 | 9.64 | 10.3 | 12.3 | 14.3 | 14.9 | 16.9 | 17.7 |
| Mw min. | 2.32 | 2.96 | 3.76 | 4.91 | 6.11 | 7.71 | 8.24 | 9.84 | 11.44 | 11.92 | 13.52 | 14.16 |
| r approx. | 3.25 | 3.75 | 4.75 | 6.25 | 7.5 | 8.5 | 10 | 11.5 | 13 | 14 | 16.5 | 17 |
| s Max. = nominal size | 7 | 8 | 10 | 13 | 16 | 18 | 21 | 24 | 27 | 30 | 34 | 36 |
| s min. P. grade A | 6.78 | 7.78 | 9.78 | 12.73 | 15.73 | 17.73 | 20.67 | 23.67 | 26.67 | 29.67 | 33.38 | 35.38 |
| s min. P. grade B | 6.64 | 7.64 | 9.64 | 12.57 | 15.57 | 17.57 | 20.16 | 23.16 | 26.16 | 29.16 | 33 | 35 |
| t w min. | 5.26 | 7.21 | 7.71 | 10.65 | 12.65 | 15.65 | 17.65 | 20.58 | 24.58 | 25.58 | 28.58 | 30.5 |
| t w max. | 5.74 | 7.79 | 8.29 | 11.35 | 13.35 | 16.35 | 18.35 | 21.42 | 25.42 | 26.42 | 29.42 | 31.5 |
| Weight kg/1000pcs min. | 2 | 2 | 2 | 2 | 3 | 4 | 5 | 4 | 5 | 5 | 5 | 6 |
| Weight kg/1000pcs max. | - | - | - | 4.66 | 11 | 20.1 | 28.3 | - | 54.3 | 95 | 104 | 216 |
A DIN 1587 nut, also known as an Acorn Nut, has a smooth dome that covers the exposed end of a bolt fastener. This prevents injuries from sharp thread edges and gives your project a clean, professional “finished” look that a standard nut can’t provide.
While they look decorative, they are fully functional. However, for extreme vibration, experts at Vimal Industrial recommend pairing them with a thread-locker or a spring washer. As a trusted Nut Bolt Supplier, we ensure the internal threading is precise enough to maintain a tight grip.
You need to check the thread diameter (M6, M8, etc.) and the “total height” of the dome. If your bolt fastener is too long, it will hit the top of the dome before the nut is tight. Always measure the protrusion of your bolt before ordering from a Fasteners Supplier India.
Absolutely. DIN 1587 is a metric standard, so it fits perfectly with any standard metric bolt fastener. Just ensure the thread pitch (standard or fine) matches your bolt to avoid stripping the internal threads during installation.
Check for a smooth dome finish and consistent thread depth. A reliable Nut Bolt Supplier like Vimal Industrial provides material test reports (MTR) to guarantee that the Industrial Hardware you receive meets international DIN safety and quality standards.
