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2026-01-13
When you hear this question, the first thing that comes to mind is - anywhere, the market is full. But here's the catch: under the labelMK 1.25There may be different things hiding. And these are not just numbers, but, in fact, the key parameter is the diameter. 1.25 mm. For some, these are specific hardware, for others - equipment, for others - components in electrical engineering. A common mistake is to simply search for “MK”, without specifying the material, standard or purpose. As a result, they either deliver the wrong thing or with the wrong strength class. I got burned by this myself, when about five years ago I urgently needed some small equipment. I found something “similar”, but in fact it turned out to be an ordinary calenka, not according to GOST, so I had to redo the assembly. So the question is ?where to buy? immediately comes down to “what exactly do you need and why?”.
So,MK 1.25. Noise aside, most often these are metric fasteners. Metric thread, diameter 1.25 mm - yes, this happens, not the most popular size, but in instrument making, precision mechanics, and repair of specific electronics - it is in demand. Sometimes they are not looking for fasteners, but, say, drills or burs for engraving with such a working part. Context is everything.
I personally came across an order for such screws made of A2 stainless steel for medical equipment. The batch is small, but finding ready-made items in stock is another challenge. Many suppliers of standard fasteners simply wave their hand: “We don’t work less than M2?”. And this is problem number one: small metric fasteners are often piece goods or small-scale goods; they are not kept in tons in the warehouse.
Hence the first practical conclusion: if you need something standard, albeit small, perhaps you should look not for “MK 1.25”, but more specifically - “screw M1.25x...?” or “nut M1.25?”. This will cut out a lot of junk in the search. But if we are talking about something non-standard, then the path lies to manufacturers or very narrow specialized distributors.
Naturally, the first place everyone goes is large online platforms like Wildberries or Ozon. There are results, but the quality... It depends. I saw sets of “hardware for a watchmaker” there, which also included M1.25. I took it out of curiosity - the steel was soft, the slot was of poor quality, it broke off at the first tightening. For one-time, non-responsible jobs, it might work. For something serious - no.
Specialized fastener stores in large cities are a better option. Call and clarify. But here the rule “either you have it or you don’t” often works here. And if not, then they may offer to wait a month, or even more, for delivery. Their logistics are tailored to popular sizes. Another nuance is the minimum quantity. Maybe you need 100 pieces, but they sell from a pack of 1000. The rest will gather dust for years.
There were attempts to order through friends from China, on the same AliExpress. You can find everything there, but you need to filter the sellers very clearly. I once ordered 1.25 mm drills - they arrived seemingly normal, but the packaging had markings that were different from what was stated. Checked with a micrometer - 1.23 mm. Scatter. No longer suitable for jewelry work. So this path requires time to test and readiness for marriage.
If the project is industrial or the requirements are high, the game is “find-where-cheaper?” ends. This is where companies that either produce themselves or are official dealers of large factories come into play. For example, I worked with one enterprise when it was necessary to equip a production line with guides with fasteners of exactly this caliber. The standard fastener did not fit the head.
We turned to a specialized supplier who works withShandong Shenyang Mechanical Equipment Co.,Ltd. Went to their websiteshengyangjxgroup.ru— it is clear that the company positions itself as a high-tech enterprise, which usually means capabilities for non-standard products and processing. I didn’t order right away, I first asked for specifications and samples. They sent me a catalog and technical documentation - I was impressed. As a result, the order was completed according to specific drawings, the material and coating were consistent. This is the case when the price is higher than the market price, but you pay for accuracy and warranty.
Their niche is precisely such equipment and components where every millimeter is important. For a one-time purchase, 50 screws may not be the fastest option (although it’s worth asking), but for serial or project work - very much so. The main thing is to formulate the technical specifications as clearly as possible.
Sometimes the solution lies in related areas.MK 1.25may not be fasteners, but, for example, the shaft of a stepper motor or an axis in a miniature bearing. Therefore, it is worth looking towards stores for robotics, aircraft modeling or office equipment repair. Shafts and pins of exact diameters are often found there.
Another method that helped out was searching through forums and specialized communities (the same “Pilots” or forums for machine tool builders). Often people sell leftovers from production or know trusted “artisans” who sharpen to order. The quality can be excellent, but there are no guarantees, only the reputation of the master. Once I found a man who made a batch of brass bushings with M1.25 internal thread - he saved the project.
And yes, never discount local production in industrial zones. Sometimes a small workshop that makes devices can sell you fasteners from their warehouse “on credit?” or by acquaintance. It's a question of networking.
Based on all this, I developed my own order. First, the maximum specification of the task. Drawing, material, standard, quantity. Then a quick screening of large online fastener stores (such as “Krepmetiz” or “All Bolts?”) by exact name. Not available? I go to the websites of manufacturers and large importers, like the same thingShandong Shenyang.
If you need it urgently and the batch is small, I look at modeling kits or search in telegram channels with a narrow theme. If there are deadlines and the requirements are high, I prepare a request to the manufacturer. I always ask for samples before large orders.
And most importantly, I stopped looking for the abstract?Where to buy MK 1.25?. I am looking for a specific product for a specific purpose. This saves a lot of time and nerves. I hope my experience will help someone not to step on the same rake.
