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Dome Cap Nut
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Long Nut / Coupling Nut
Long Nut / Coupling Nut
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Hex Nut
Hex Nut

Dome Cap Nut

Dome Cup Nuts, also known as Cap Nuts, are hexagonal nuts with a domed top designed to cover exposed bolt threads. They provide both functional protection and a clean, finished appearance in assemblies. Manufactured to ASTM and DIN standards, they are available in carbon steel, stainless steel, brass, and decorative finishes. These nuts prevent thread damage, enhance safety, and resist corrosion when plated or galvanized. They are widely used in furniture, automotive, architectural fittings, machinery, and general engineering projects.

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Description

Premium Quality Dome Cap Nut Supplier in Dubai, UAE

Unifastener Industries LLC is a reliable supplier and manufacturer of high-quality Dome Cap Nuts in Dubai, UAE. The company specializes in industrial fastening solutions designed for automotive, furniture, construction, machinery, engineering, and decorative applications. Dome Cap Nuts, also known as Acorn Nuts, are specially designed fasteners with a domed closed-end structure that covers exposed bolt threads for improved safety, appearance, and corrosion protection. These nuts are widely used in applications where both secure fastening and an attractive finish are important. Manufactured using premium-grade materials and precision engineering, Dome Cap Nuts provide durability, corrosion resistance, smooth finishing, and reliable fastening performance for industrial and commercial applications.


Standards:
– ASTM A563 (carbon and alloy steel nuts)
– ASTM F594 (stainless steel nuts)
– DIN 1587 (hex domed cap nuts)
– ISO 4032 / ISO 4035 (reference for hex nut dimensions, adapted to dome types)

Grades:
– ASTM Grades: A563 (A, B, C, DH)
– Stainless Steel Grades: A2 / A4 (ASTM F594)
– DIN / ISO Grades: 4, 6, 8, 10

Material Options:
– Carbon steel
– Stainless steel (A2 / A4 grades)
– Brass
– Aluminum (lightweight decorative use)

Diameter Range: M4 to M24 (metric) / #8-32 to 1″ (inch)

Thread Types:
– Metric coarse pitch (DIN 13 / ISO 261)
– Metric fine pitch (on request)
– UNC (Unified Coarse, ASTM)
– UNF (Unified Fine, ASTM)

Types:
– Standard dome cup nut (DIN 1587)
– High dome nut (extended cap height)
– Low dome nut (shallow cap profile)

Properties:
– Protects exposed bolt threads from damage and corrosion
– Provides a safe and finished appearance
– Can be used for both structural and decorative applications

Coating Options:
– Plain (self-color, oiled)
– Zinc electroplated
– Hot-dip galvanized (ASTM A153 / DIN EN ISO 1461)
– Nickel plated
– Chrome plated (decorative finish)

Add-ons:
– Can be paired with flat or spring washers
– Often supplied with matching bolts in furniture/architectural kits
– Certification (MTC) available on request

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