Your chain is fine. The clasp is what gave up. If that sounds familiar, you are in good company: the clasp is the smallest part of a chain and the first one to complain. The quick answer is that most clasp trouble comes down to three things: the wrong clasp type for the chain's weight, a hook that is too big or too small, or a lock that has simply been opened and closed a few thousand times.
This guide explains the clasp types you will see on Soni Fashion chains, how to pick a hook size, how to attach an S hook without losing the chain on the road, and when to stop fiddling and write to us.
First, know the three clasps you will meet
Walk through any chain shelf and you will see the same few lock styles again and again. They look similar from a distance, but they behave very differently on your neck.
1. Spring lock (lobster-style)
A tiny spring-loaded gate that you push with a fingernail. It stays shut until you press it, which makes it the easiest lock to use one-handed. It suits most everyday chains and is the one most people prefer for office and daily wear.
2. S hook
Shaped like the letter S, one end hooks into the chain's end ring and the other end into the loop on the other side. It looks neat and sits flat, but it has no gate, so it depends on being squeezed correctly. It is the clasp people most often ask us about, usually because one side has opened up a little.
3. M/W hook
A broader, zig-zag hook you will see on thicker, heavier chains. The extra shape gives it more grip, so it is a good match when the chain is chunky and has some weight to it.
Golden rule: the thicker the chain, the sturdier the lock. A heavy chain on a tiny hook is like a big bag on a thin strap. It may hold, but you will worry all day.
Why a clasp loosens (it is usually not a defect)
Clasps move. Every time you take your chain off, the hook opens a tiny bit and closes again. Over months, a few things add up.
Sweat and daily friction wear the contact points. A chain worn under a collar rubs against fabric all day. Pulling a shirt or T-shirt over your head tugs the chain sideways, and that sideways pull is exactly the force an S hook is worst at handling.
Wear is also the reason we say care matters. Our own daily care habits guide covers sweat, water and perfume, and the same habits keep a clasp in better shape for longer.
How to pick the right hook size
This is where most online orders go wrong, because the hook looks fine in the photo and then arrives too small or too big. Our hook collection lists small, medium and big sizes, so you do not need to guess.
Match it to the chain, not to your hope
Look at the end ring of the chain you want to fix. If you can, hold the old hook next to a ruler and note its length. A small hook belongs on a thin chain. A medium hook suits a regular everyday chain. A big hook is meant for a thick chain.
If you are not sure how thick your chain is, our chain thickness guide shows how to read it in millimetres in about a minute.
Quick check before ordering
Look at three things: the thickness of the chain, the size of the end ring, and the weight you want it to carry. If one of them does not match, change the hook size, not your expectation.
How to attach an S hook so it stays put
Here is the method that works for most people. Do this on a table, not over a sink, and keep a soft cloth under your hands so nothing rolls away.
1. Lay the chain out flat. Check that both end rings are intact and not stretched.
2. Open the S slightly. Hold the hook with the thumb and finger of one hand. Gently widen one curve of the S just enough to slip the end ring in. Do not pry it wide open; the more you bend, the weaker it gets.
3. Slip the ring on and close. Press the curve back so the gap is almost closed. Small, slow movements.
4. Do the same on the other side. The second curve connects to the loop on the opposite end of the chain.
5. Do the tug test. Hold both ends of the chain and pull firmly. If a gap opens, squeeze it a little more. Test it again before wearing.
If you have never done this before, practise on a spare hook first. And do not bend a hook back and forth to correct a mistake; every bend weakens the metal.
S hook, spring lock or M/W hook: which one for you?
Here is how we would choose in real life.
If you wear a chain to the office and take it off at night, a spring lock is the least fuss. If you like a clean look and are comfortable handling small parts, an S hook is neat. If your chain is thick and heavy, go for the broader M/W hook.
Gym and sweaty days deserve a closer look at the clasp afterwards. Bike rides, cricket and long shifts in the sun all make a chain move more. A quick glance at the lock before you leave the house takes five seconds.
Two situations where you should stop and write to us
Some problems are not fixed by a new hook.
If the chain link itself is broken, or the end ring has opened, a clasp swap will not solve it. Do not keep pulling on it.
If your chain arrived with a broken clasp or damaged, keep the parcel, record an unboxing video as you open it, and contact us within 7 days. Returns are only for wrong or damaged items, and the unboxing video is required. We can then arrange a replacement or a refund. Return courier cost is borne by the customer. We do not accept returns for change of mind or size.
You can reach the team on call or WhatsApp at +91 2816777775, or email support@soni.fashion.
A small habit list that saves clasps
Open it gently. Use a fingernail on a spring lock. Do not yank.
Take it off before changing. Pulling a T-shirt over a worn chain is the number one clasp killer.
Check once a week. Hold the clasp up to the light. A visible gap means it needs attention.
Do not sleep in it. Chains twist and tug at night.
Keep it dry and apart. A chain tossed in a pocket with keys will wear faster. A soft pouch costs very little.
For a wider look at choosing the chain itself, our men's chain choosing guide is a good next read, and the chain length guide helps with how it will sit on you.
Where to find hooks and chains
If you want to replace a clasp yourself, browse our chain hooks collection for S hooks, M/W hooks and spring locks in different sizes. If you are shopping for a new chain, the gold plated chains for men range has plenty of styles to compare. Delivery takes 3-7 days across India, and orders are dispatched in 1-2 business days.
FAQ
Which clasp is strongest for a heavy chain?
For thick chains, the broader M/W hook or a sturdy spring lock is a better match than a small S hook. Match the clasp size to the chain thickness.
Can I replace a chain hook myself?
Yes, if you are patient. Open the hook slightly, slide the end ring on, close it, and tug test. If you are not comfortable, ask a local jeweller to attach it.
My S hook keeps opening. Why?
Usually the gap was left a little wide, or the chain is too heavy for the hook size. Squeeze the gap closed a little more, or move to a bigger hook.
What size hook should I order?
Small for thin chains, medium for regular everyday chains and big for thick, heavy chains. Check the end ring size against the product page before ordering.
Does the clasp wear out faster than the chain?
Often, yes, because it moves every time you open it. Gentle handling and taking the chain off before changing clothes helps it last.
What if my chain arrives with a damaged clasp?
Record an unboxing video while opening the parcel and contact us within 7 days. Wrong or damaged items are eligible for replacement or refund. We cannot accept change-of-mind or size returns.
Not sure which hook fits your chain? Send us a photo on WhatsApp at +91 2816777775 and we will point you to the right size.
