Brass Flat Metal Backs and Wire Loop Buttons: Traditional Sew-On Hardware

The Foundation of Traditional Button Attachment

Before snap buttons and press studs, all garment closures relied on sew-on mechanisms. Metal backs and wire loop buttons continue to play essential roles in modern garment construction, serving as the interface between decorative buttons and the fabric.

Brass Flat Metal Backs

Brass flat metal backs are thin, flat discs with a centered shank or post. They serve as the base onto which decorative button caps are attached, creating a finished sew-on button.

How Metal Backs Work

The metal back is attached to the fabric through its shank (a loop on the back), then a decorative cap is pressed or clinched onto the front. This two-piece system allows manufacturers to mix decorative caps with functional backs.

Applications

• Base for jean button caps
• Back plate for decorative snap button caps
• Standalone flat buttons for interior closures
• Reinforcement plates behind button attachments

Alloyed Sew-On Buttons

Alloyed sew-on buttons are complete zamak cast buttons with integrated sewing holes or shanks. They offer complex decorative designs that are impossible with stamped metal.

Brass Sew-On Shank Buttons

Brass sew-on shank buttons feature a metal loop (shank) on the back for thread attachment. The shank lifts the button above the fabric surface, providing space for the buttonhole layers and creating a cleaner closure.

Shank vs Flat Sew-Through

Wire Loop Back Buttons

Wire loop back buttons use a bent wire loop welded to the button back instead of a cast shank. This creates a lighter, more flexible attachment that is easier to sew and more comfortable against the body.

Advantages of Wire Loop Backs

• Lighter weight than cast shanks
• Flexible loop conforms to fabric contour
• Easier to sew — needle passes through more easily
• Lower production cost

Sewing Snap Button as Metal Back

Our sewing snap button range also functions as a type of metal back — the snap socket provides the closure mechanism while the sewing holes provide the attachment method. See our sewing snap guide for installation instructions.

Choosing Between Button Back Types

• Use flat metal backs when a low-profile, hidden attachment is needed
• Use shank buttons for thick outerwear and coats where button elevation is needed
• Use wire loop backs when weight and comfort are priorities
• Use sew-on buttons when no pressing machinery is available

Wholesale Sew-On Hardware

Browse our buttons and metal backs catalog for the complete range. Contact Ata Buttons for samples and wholesale pricing on all sew-on button hardware.