The 17 mm (0.67 in) flat coin-style zinc alloy snap fastener is designed for garment and accessory projects where a medium-size metal closure with a simple circular face is preferred. It combines a clean visual profile with a four-piece fastening system and can be considered for jackets, coats, outerwear, leather accessories and bags. The product is identified as 28L, but the verified actual diameter listed for this model is 17 mm, so fit and tool decisions should use the real millimeter measurement.
Key Features: 17 mm actual diameter, 28L nominal reference, zinc alloy construction, four-piece snap system, multiple finish options, and exact setting-die matching required before production.
Flat Coin-Style Snap Fastener for Apparel and Leather Goods
The verified diameter is 17 mm, approximately 0.67 inches. The product is specified as a four-piece system. Current finish selections include Nickel Plate, Black Nickel Plate, Antique Brass, Oxide / Black, Gold and Copper.
Why the Actual 17 mm Measurement Matters
Nominal ligne references do not always match actual hardware dimensions exactly. This model is listed as 17 mm and 28L. Do not automatically substitute another diameter based only on a generic ligne conversion chart. The real millimeter measurement matters when selecting setting dies, coordinating visible hardware and planning spacing.
Selection and Installation Checks
Check the total material thickness, reinforcement, mating components and setting die before production. Test several complete samples on the actual material and confirm closing force, opening action, alignment and the condition of the surrounding material.
Technical Specifications
- Product type: Flat coin-style snap fastener
- Material: Zinc alloy
- Actual diameter: 17 mm (0.67 in)
- Nominal size reference: 28L
- Construction: Four-piece system
- Minimum order: 50 pcs
- Listed finishes: Nickel, black nickel, antique brass, oxide/black, gold, copper
Related Snap Fastener Models
To compare this 17 mm flat coin-style snap with nearby sizes and similar closures, browse snap fastener models for outerwear, leather goods and bag projects. For installation planning, also review installation tools and accessories for snap fasteners and garment hardware. If a compatible installation tool is separately confirmed for this snap system, you can also review the manual hand press used for compatible garment hardware applications.
Frequently Asked Questions
Is this snap 17 mm or 18 mm?
The verified product listing specifies a 17 mm diameter. Use 17 mm for actual sizing.
Why is it also called 28L?
28L is a nominal ligne reference. The verified 17 mm measurement should be used for fit and production decisions.
What is 17 mm in inches?
17 mm is approximately 0.67 inches.
What material is used?
The product is specified as zinc alloy.
Can it be used on leather goods?
Leather goods are among the referenced applications, but material thickness and tool compatibility should be tested before production.