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Acorn Nuts by ZCM - Zhongchun Machinery
Two stainless steel acorn nuts showing front and side views by ZCM
Multiple stainless steel acorn nuts in various sizes by ZCM
Three zinc plated acorn nuts in a row by ZCM
Assorted zinc plated acorn nuts in different sizes by ZCM

Nuts

Acorn Nuts (Cap Nuts)

Dome Nuts / Decorative Hex Cap Nuts

Our Acorn Nuts feature a distinctive domed cap that fully covers the exposed end of a threaded bolt or stud. This elegant design serves both functional and aesthetic purposes - protecting hands from sharp thread ends while providing a polished, professional finish. Manufactured through precision cold heading for consistent quality, they are available in carbon steel, stainless steel, and brass with various plating options.

Key Features

Precision cold-formed domed hexagonal cap
Covers and conceals exposed bolt threads
Decorative finish for visible installations
Protects against injury from sharp thread ends
Available in stainless steel, carbon steel, and brass
Multiple plating options for corrosion resistance

Technical Specifications

Product NameAcorn Nuts / Cap Nuts / Dome Nuts
Chinese Name盖型螺母
BrandZCM / Zhongchun
Grade4 / 5 / 8 / 10
MaterialCarbon Steel, Stainless Steel (304/316), Brass
Size RangeM3 - M24
ThreadStandard Metric (Coarse / Fine)
Head TypeHexagonal with Domed Cap
Surface TreatmentZinc Plated (White/Yellow/Blue), Nickel Plated, Chrome Plated, Plain
StandardsDIN 1587, GB/T 923, ANSI/ASME B18.6.7M
PackagingCarton + Pallet, or per customer request
MOQContact us for details
Lead Time15 days for standard orders

Applications

Acorn nuts are widely used wherever a safe, decorative finish is needed over exposed bolt threads.

Automotive exterior and interior trim
Furniture assembly and decorative hardware
Architectural railings and handrails
Playground and public safety equipment
Marine and outdoor structural connections
Electrical panel and enclosure fastening
Machinery guards and protective covers
Consumer appliance and electronics assembly

Interested in Acorn Nuts?

Send us your specifications for a competitive quote. Standard orders delivered in 15 days.