3.5" × 3.5" round‑corner stainless steel hinge with 2BB bearings and US square‑slot leaf
Specification summary for 3.5" × 3.5" × 2.5 mm stainless steel hinge with 2BB bearings and template pattern
Technical outline of 3.5" × 3.5" hinge with round corners, 2.5 mm thickness and one leaf with square slots

Architectural Stainless Steel Round‑Corner Bearing Hinge | 3.5″ × 3.5″ × 2.5 mm | 2BB | Template Pattern | US Square‑Slot Leaf | SS304/201 | Satin/Polished/AB/AC/PVD

  • Size: 3.5″ (H) × 3.5″ (W) × 2.5 mm (T)
  • Material: Stainless steel (SS304/201)
  • Bearings: 2 ball bearings (2BB) for smooth, low‑noise operation
  • Design: round corners; one leaf with US square slots; five‑knuckle construction
  • Template: unified screw‑hole pattern for fast, repeatable fitting
  • Finishes: Satin Stainless (SSS), Polished Stainless (PSS), Antique Brass (AB), Antique Copper (AC), PVD
  • Applications: room doors, wooden gate doors; residential/light commercial
  • Features: flexible switching, quiet swing, long service life; easy alignment with square‑slot leaf
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Description

Designed for radius‑prep doors in North American style frames, this 3.5″ × 3.5″ bearing hinge pairs stainless‑steel leaves with two ball bearings for a smooth, quiet swing. One leaf features US‑style square slots for quick, repeatable alignment during installation; the other uses a standard template screw pattern. The five‑knuckle stack offers consistent feel and durability at a practical 2.5 mm leaf thickness. Finish options—satin, polished, antique brass/copper, and PVD—allow seamless coordination across residential and light‑commercial interiors.

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Akada Hardware specializes in a wide range of high-quality hardware solutions for both wooden and metal doors. Our product line includes stainless steel as well as composite metal products, all designed to provide strength, durability, and modern aesthetics.

Akada’s products include Door Locks, Door Hinges, Lever Handles, Door Closers, Panic Exit Devices, Door Stoppers, Flush Bolts, and more. These products are tested to the most rigorous international standards, including CE, UL, BS EN, ANSI, and BHMA. Whether for residential, commercial, healthcare, hospitality, or educational applications, Akada hardware is engineered for top performance and reliability.

More door hardware items include:
1、Stainless Steel & Composite Metal Door Hinges – UL Listed, Fire Rated & CE Certified
2、Door Locks – CE EN12209, Fire Rated
3、Stainless Steel & Composite Metal Door Handles – BS EN 1906 Certified
4、Panic Exit Device – UL Listed & CE Certified
5、Door Closers – CE BS EN 1154 Certified
6、Glass Hardware / Bathroom Hardware – Combining elegance with functionality for residential and commercial use.

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