Stainless Steel Non-Mortise Flush Door Hinges (Model 4330A)

Engineered for quick, chisel-free installation, this heavy-duty stainless steel non-mortise flush hinge (Model 4330A) features an interlocking leaf structure that folds completely flat. Built with a solid ball-bearing core and an oversized 14.5 mm barrel, it ensures silent, effortless door pivoting and long-term sagging protection for residential and commercial interior doors.

Key Features

• Non-Mortise Interlocking Profile: Inner leaf nests seamlessly inside the outer leaf, enabling direct surface mounting onto door edges without requiring complex frame mortising or chiseling.

• Thickened 14.5 mm Solid Ball-Bearing Core: Precision CNC-machined pin core with integrated ball bearings provides silent, friction-free rotation and superior weight distribution.

• Heavy-Duty 3.0mm Plate Thickness: Stamped from high-grade 201 or 304 stainless steel for robust structural integrity, corrosion resistance, and high load capacity.

• High Load-Bearing Strength: Supports up to 45kg per 3-piece installation, making it ideal for solid wood and heavy composite doors.

• 9 Premium Decorative Finishes: Available in vacuum PVD and electroplated coatings to complement any architectural style or door hardware collection.

Product Specifications

9 Available Finish Options

• Satin Stainless / Brushed Steel: Clean, brushed steel look for modern minimalist spaces.

• Matte Black: Modern flat black coating for contemporary interiors.

• Gunmetal / Gun Black: Deep metallic dark-gray finish with industrial styling.

• Bright Chrome : High-shine mirror polish plating.

• PVD Gold / Titanium Gold : Premium luxury gold plating with high wear resistance.

• Bright Gold : Classic polished brass appearance.

• Antique Bronze : Subtle aged-bronze tone for vintage doors.

• Yellow Bronze : Warm antique brass finish.

• Red Bronze : Rich copper-red bronze finish.

Typical Applications

• Solid timber doors & composite interior doors

• Bedroom, office, and apartment entryway doors

• Bathroom and moisture-prone interior environments

B2B Wholesale & Customization

We support OEM logo etching, custom packaging, and volume wholesale supply for door manufacturers, hardware importers, and distributors.

Contact our sales team today to request product samples, CAD specification sheets, or bulk pricing.