BUCKLES

Frame Buckle – Metal Belt Buckle Design Pin Buckle for Bags and Leather Goods Metal Buckle Hardware Detail
Frame Buckle – Metal Belt Buckle Design Pin Buckle for Bags and Leather Goods Metal Buckle Hardware Detail

BUCKLES

A buckle is a fastening device used to join or adjust the length of webbing, leather, or straps. It serves both functional and decorative purposes, making it a key hardware component for bags, footwear, apparel, and outdoor gear.

Common buckle types include:

  • Frame / Prong Buckle: Consists of a frame, a central bar, and a prong (sometimes with a roller) for easy fastening and adjustment.

  • Center-bar / Double-bar Buckle: Features two bars for quick strap adjustment, sometimes designed without a prong.

With their blend of practicality and design appeal, buckles provide secure closure while enhancing product aesthetics.


  1. Metal stamping + forming (high volume, strong, cost-efficient)
    1. Flow: coil cutting → progressive die stamping (frame, bar, prong) → coining/forming → deburr/tumble → polishing → plating/PVD/e-coat → assembly (prong/roller) → QC.
    2. Best for: frame/prong buckles, center-bar, slide adjusters in steel/brass.
  2. Zinc-alloy (Zamak) die casting (complex shapes, premium cosmetics)
    1. Flow: hot-chamber die casting → trimming/deburring → vibratory finishing → polishing → electroplating (nickel, antique brass, gunmetal, gold) or PVD → clear e-coat → assembly → QC.
    2. Best for: decorative, logo-rich frames; moderate loads.
  3. Forging (brass/steel) + CNC finishing (highest strength & feel)
    1. Flow: hot/warm forging → trimming → heat treatment (for steels) → CNC/barrel finishing → polish/satin → plating or passivation → assembly → QC.
  4. Plastics injection molding (POM/PA66/PC)
    1. Flow: mold design → injection molding → gate trim → 100% visual & snap-fit check → life-cycle test → QC.