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  • Stainless steel 4BB bearing hinge with square‑corner template and five‑knuckle designTechnical outline of 4BB hinge with template screw pattern and optional radius corners R 1/4" and R 3/8"

    Architectural Stainless Steel 4BB Bearing Hinge | Square & Radius Corners | Template Pattern | Multiple Sizes | Brushed/Polished/PVD

    • Material: Stainless steel
    • Bearings: 4 ball bearings (4BB) for ultra‑smooth action
    • Corners: square or radius (R 1/4″, 3/8″)
    • Template: unified screw‑hole pattern for fast, repeatable fitting
    • Sizes (H × W × T, inches/mm examples):
      • 4.0″ × 3.0″ × 2.0 / 2.5 / 3.0 mm
      • 4.0″ × 3.5″ × 2.5 / 3.0 mm
      • 4.0″ × 4.0″ × 2.5 / 3.0 mm
      • 4.5″ × 4.0″ × 3.0 mm; 4.5″ × 4.5″ × 3.0 mm
      • 5.0″ × 3.0″ × 3.0 mm; 5.0″ × 3.5″ × 3.0 mm; 5.0″ × 4.0″ × 3.0 mm
    • Swaging (W1): standard 2.5–3.0 mm; optional 1.6–2.0 mm
    • Finishes: Satin Stainless (SSS), Polished Stainless (PSS), PVD
    • Applications: interior wooden doors, metal frames; residential and light commercial
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