Zinc Alloy Insertion Pin and Box, Left-Side Open-End Zipper

Material: Zinc alloy

Type: Left Side Pin & Box

Size: #3 #4 #5 #8 #10

Color: Customized

MH open-end zipper insertion pin and box is a left-side metal termination set used to close the bottom of a separable zipper. Made from zinc alloy, the pin and box hold the two chain halves together at the base and let the zipper part fully open when released.

The left-side configuration pairs with the right-side counterpart and an open-end slider to build a separable zipper on jackets, bags and outerwear.

MH produces the set in #3, #4, #5, #8 and #10 chain gauges, with custom metal finishes on request.

Key Selling Points

• Left-side termination set: MH supplies the pin and box in a left-side layout that mates with the right-side counterpart to complete an open-end zipper base.
• Zinc alloy construction: The pin and box are cast in zinc alloy for a rigid, hard-wearing termination that survives repeated separation.
• Multi-gauge fit: One design covers #3, #4, #5, #8 and #10 chains, so buyers can standardize hardware across a zipper range.
• Custom metal finishes: MH plates the set in nickel, antique brass, black nickel, gold and gunmetal to match slider and puller tones.
• Bulk OEM supply: MH manufactures the insertion pin and box at scale for garment and bag zipper factories.