A custom zigzag spring (also known as a sinuous spring or no-sag spring) is a type of spring used in sofa and furniture manufacturing to provide support and flexibility. The 4.8mm measurement refers to the wire thickness (gauge) of the spring.

• Material: High-carbon steel for durability and resilience
• Wire Thickness: 4.8mm (approx. 9-gauge wire, common for sturdy seating)
• Shape: Continuous "zigzag" or serpentine design for even weight distribution
• Function: Provides support while allowing slight flex for comfort
• Common Uses: Sofa seat foundations, backrests, and mattress support systems

For custom zigzag springs, specify the following parameters:

• Length & Height: Custom dimensions (e.g., 600mm long x 100mm high)
• Number of Coils: More coils for softer feel, fewer coils for firmer support
• End Types: Straight ends, hooked ends, or loops for attachment
• Tempering: Heat-treated for extra strength