What is DIN1587 Cap Nut Zinc Plated Carbon Steel used for?

A one-piece turned high hex dome cap nut is manufactured strictly according to German DIN1587 industrial standard. This fastener is machined from solid carbon steel bar on CNC lathes without any welding seams, so hexagonal base and hemispherical dome cap form an integral and seamless whole body. DIN1587 Cap Nut Zinc Plated Carbon Steel has a hemispherical dome that can fully cover exposed bolt thread ends after fastening work, preventing hands from being scratched by sharp thread edges and blocking dust, rain and moisture from reaching thread sections. The hexagonal outer profile provides stable clamping surface for spanner operation during installation and disassembly. This fastener combines reliable fastening performance and decorative appearance, widely adopted in many architectural, furniture and mechanical fastening projects across Europe, America and Southeast Asia markets.

Material & Surface Treatment

Premium low carbon steel is selected as raw material, suitable for cold forming and precision turning without material cracking. All steel bar raw materials go through incoming chemical composition inspection and hardness sampling test before mass production, to ensure carbon content and impurity level meet DIN1587 dimensional and mechanical requirements. DIN1587 Cap Nut Zinc Plated Carbon Steel adopts eco-friendly trivalent blue white zinc plating as standard surface treatment, which meets RoHS and REACH environmental compliance for export to EU and North America markets. The dense zinc coating forms a protective barrier against oxidation and moisture corrosion under normal atmospheric environment. Alternative surface finishes including yellow zinc plating, black oxide treatment and hot dip galvanizing can be customized to meet different project anti-corrosion requirements. Threads are precision rolled after plating to guarantee accurate fit with matching bolts.

Main Application Fields

This cap nut can conceal sharp bolt thread ends to reduce safety risks when people touch assembled structures in public areas. Common usage scenarios include balcony railing and handrail assembly, wooden and metal furniture connection, outdoor fitness equipment fitting, electrical cabinet and distribution box assembly, greenhouse frame installation, highway guardrail decoration and architectural facade decoration projects. DIN1587 Cap Nut Zinc Plated Carbon Steel features the smooth round dome that creates neat finished visual effect and avoids accumulation of rainwater and dust on exposed threads. This cap nut is preferred for projects requiring both fastening security and attractive exterior look, especially when assembled components are visible to end users.

Technical Parameters

Packaging & Delivery

Finished products will be sorted and surface cleaned after 100% thread and dimension inspection. Products are firstly sealed inside waterproof PE inner bags to prevent surface scratches, fingerprint contamination and moisture rusting during container stuffing. Goods are then packed into thickened double-layer export cartons printed with clear product specification labels, batch number and quantity mark. DIN1587 Cap Nut Zinc Plated Carbon Steel adopts standardized export packaging for long-distance overseas shipment. Cartons are stacked on fumigated wooden pallets certified for international shipping, wrapped by stretch film and fixed with plastic strapping bands on all four sides. Full container LCL and FCL shipment are both acceptable. Custom shipping marks, brand logo and barcode printing service can be provided according to buyer's personalized requirements.

Packaging Details

Why Choose Gangtong Zheli

Gangtong Zheli owns complete fastener production lines including CNC lathe workshop, thread rolling workshop, electroplating line and independent quality inspection laboratory. Gangtong Zheli implements full-process quality control covering raw material incoming check, precision turning, thread rolling, surface treatment and finished dimension inspection. DIN1587 Cap Nut Zinc Plated Carbon Steel is one of the core fastener products produced and supplied by Gangtong Zheli. Gangtong Zheli maintains abundant stock for regular sizes of this cap nut. Gangtong Zheli can issue MTC material test certificates, RoHS test report and packing list for every shipment. Gangtong Zheli accepts non-standard size customization, special thread pitch and custom surface treatment according to buyer drawings. Gangtong Zheli has rich experience cooperating with global hardware distributors, engineering contractors and supermarket chain buyers from Europe, America, Australia and Southeast Asia, delivering stable and trustworthy fastener supply service for more than 10 years.

FAQ

Q1: What standard does DIN1587 Cap Nut follow?

A1: DIN1587 Cap Nut is manufactured according to German DIN1587 industrial specification for high type hexagon cap nuts.

Q2: Is DIN1587 Cap Nut one-piece type?

A2: DIN1587 Cap Nut is one-piece turned product processed from solid carbon steel bar, with no welding seam between hex base and dome cap.

Q3: What thread types are available?

A3: Standard metric coarse thread from M5 to M24 is available, fine thread can be customized on request.

Q4: Can buyers customize surface treatment for DIN1587 Cap Nut?

A4: Yes, standard blue white zinc, yellow zinc, black oxide and hot dip galvanizing options are available on request.

Q5: Can Gangtong Zheli provide material test certificates?

A5: Yes, MTC material test certificates, RoHS report and packing list can be supplied for each batch of goods.