Start With the Snap Hook
Most people start a bag with the leather. They spend weeks choosing a hide, then order the hardware in an afternoon. That order is usually the part they regret. The metal is what the customer touches, and it is the part that fails first when it is wrong. The good news is that the list is short. Nearly every bag ever made runs on the same five components, and once you know what they are, sourcing gets much simpler.
The snap hook is the piece that connects your strap to the bag. It is also the busiest part of the whole design. Somebody will open and close it several times a day, for years, so it has to be right. A hook that sticks, or that swivels stiffly, will annoy the owner every single time they use the bag.
Size it by the inside width of the hook, and match that number to your strap width. A 25mm strap wants a 25mm hook. If the hook is wider, the strap slides sideways and wears a crease at the fold. Check the spring before you commit to a quantity. Work it twenty times in your hand. It should snap back sharply each time, not slow down.
Anchor It With a D-Ring
A hook needs something to clip onto. That is what the D-ring does. It sits inside a leather tab that is riveted or stitched to the body of the bag, and it carries the entire weight of everything inside. Simple part, serious job.
Look at the weld first. A D-ring should be welded closed and then ground smooth, so you cannot see where the join is. If you can see the seam, the ring will eventually spread open under load. Match the ring width to the tab that holds it, which is usually the same as your strap. And pay attention to the wire gauge — a thin ring on a heavy tote looks wrong and behaves worse.
Protect the Base With Feet
Bag feet are the cheapest part on this list and the one that saves you the most complaints. They are small metal domes fitted into the bottom of the bag, and all they do is lift the leather off the floor. Skip them and the base is scuffed and grey within a season.
Four feet handle most bags. Go to six on anything wide or heavy, so the base does not sag in the middle. Choose screw-back feet over prong-back where you can. Prongs bend open over time; screws stay tight and can be replaced years later. Whatever you use, put a washer or a stiffening board behind them on the inside. A foot fitted straight through a single layer of leather will tear out.
Choose the Zipper Carefully
The zipper is where cheap hardware announces itself fastest. A good one costs several times what a bad one does, and the difference is obvious the moment somebody opens the bag. If you are going to spend on one component, spend it here.
Zipper size refers to the width of the closed teeth in millimetres. Use #5 for the main opening on most handbags and totes. Use #3 for inner pockets and small pouches. Save #8 and above for travel bags and luggage. Choose a slider that locks itself, or the zipper will creep open when the bag is full. And buy your zipper tape by the metre with the sliders separately — it costs less and it lets you make any length you want.
Close It With a Magnetic Snap
A magnetic snap is the closure you cannot see. It holds a flap shut, or divides an interior, without a visible catch anywhere on the outside. That is exactly what a minimal bag needs.
Match the strength to the flap. A 14mm snap suits small bags and inner pockets. An 18mm suits a flap on a tote or a satchel. Too weak and the flap gapes; too strong and it deforms the leather every time it is opened. Reinforce the prongs with a washer and a stiffening layer, and fit the snap before you close up the lining. That last point catches almost everyone once.
How to Build Your First Hardware Set
Do not buy five components from five different suppliers. Finishes never match across factories, even when the name on the label is identical, and two slightly different silvers sitting two centimetres apart on a strap will bother you forever.
Pick your strap width first, because everything follows from it. Twenty-five millimetres is the safest place to start — it suits crossbody bags, handbags and light totes alike. Then pick one finish and buy every part in it. Then size the rest against the bag rather than the strap: #5 zipper, four feet, an 18mm snap for a flap. Order a sample set before you order quantity. Hardware photographs very differently to how it looks in daylight against your own leather, and no description replaces holding it.
A Note on Material
If you work with veg-tan, oiled or waxed leather, use stainless steel. Tannins and oils attack plated zinc alloy, and when the plating goes you get green or black staining that soaks into a light hide and never comes out. Everything Hility makes is machined from 316L stainless — solid metal all the way through, so there is no plating to wear off in the first place.
Conclusion
Five parts. One strap width. One finish. That is the entire decision, and getting it right at the start costs no more than getting it wrong. Take the time to choose once, order a sample, and then build your line on hardware you already trust.
Ready to start? Browse the Basic Hardware Sets collection, or send us a sketch — we have been supplying bag hardware for over a decade and we will tell you what we would use.