Classification of stainless steel non-standard parts:

1. Non-standard bolts: flange bolts, stainless steel hexagonal bolts, square head and lifting rings, carriage bolts, American pan-head hexagon socket screws, T-bolts, flat-head hexagon socket screws, pan-head hexagon socket screws, American flat-head hexagon socket screws Screws, fine-pitch screws, extra-long screws, etc.

2. Non-standard screws: hexagon socket screws, set screws, self-tapping screws, self-drilling screws, mechanical screws, combination screws, throat plugs, circlips, American-made throat plugs, etc.

3. Non-standard nuts: square nuts, hexagon nuts, disc nuts, flange nuts, lock nuts, K caps, cap nuts, furniture nuts, welding nuts, etc.

4. Non-standard washers and retaining rings: stainless steel special-shaped spring washers, flat washers, colorful washers, etc.

5. Non-standard rivets: blind rivets, pressure riveting series, rivet nuts, hollow rivets, etc.

6. Other categories: construction hardware, non-standard curtain wall accessories, threaded sheaths, construction fasteners, plastic screws, installation tools, etc.

Due to the rapid development of the machinery industry nowadays, the standards for stainless steel fasteners are becoming more and more the same, regardless of its size, shape, or material requirements are the same, therefore, there is a saying of standard parts. The so-called standard parts are stainless steel fasteners that have national standards and can be used for mass production. Manufacturers can buy in large quantities and use them. However, not all manufacturers have the same needs. There will always be some specific sizes, shapes, etc., then these specific stainless steel fasteners need to be tailored, in other words, this batch of specific fasteners Parts cannot be produced in large quantities, and mass production is just a waste of resources.