What Are the Most Common Uses for Different Types of Screws

Veröffentlicht: December 19, 2025

Kategorien: Neuigkeiten

Screws look simple, but they are actually very specialized tools. Picking the wrong one can make a project weaker, less safe, or cause it to break sooner. In factories and big building jobs, getting the right screw matters a lot. Qewit is a fastener company that started with British engineering know-how and now makes products in modern factories in the Far East. They sell thousands of screw types for construction, machines, electronics, and metal work.

Below, we talk about where the most common screw types get used every day, with real examples from Qewit’s popular items.

How Do Precision-Engineered Screws Support Modern Industrial Applications?

Every industry wants something a little different from a screw. A machine builder might need it to handle huge twisting force. A metal worker might care more about how fast it goes in. The shape of the thread, the head, the drive (like Phillips or hex), and the tip all decide what job the screw does best.

High-Torque Fastening for Structural Components

Sometimes you need a screw that ends up perfectly flat with the surface, especially when parts move nearby. That’s when people reach for Hexagon Socket Countersunk Screws DIN 7991 / ISO 10642. The head sinks down into a countersunk hole, so nothing sticks up and catches on things. The hex socket inside the head lets you tighten it much harder than a normal cross-head screw.

You’ll find these screws holding together equipment frames, heavy steel brackets, conveyor supports, and precision tools. Anywhere that needs strong, clean, hidden fastening, these screws are a favorite in factories and workshops.

Reliable Metal-to-Metal Assembly in High-Vibration Environments

Steel buildings, roofs, and machines shake a lot from wind, motors, or daily use. Hex Flange Head Self-Drilling Screws are perfect for those jobs. They have a little drill tip, so they make their own hole and thread in one quick step—no extra drilling needed.

The wide flange under the hex head acts like a built-in washer. It spreads the pressure over a bigger area, which keeps the screw from working loose when everything vibrates. Roofers, HVAC installers, and metal-building crews love them for steel roofing, duct work, outdoor frames, and cladding. They save tons of time on site.

Versatile Screwing for Pre-Tapped Holes and Electronic Devices

When a hole is already threaded or you’re using a nut, machine screws are usually the best choice. The Phillips Pan Kopf Maschinenschraube ASME B18.6.3 is a classic example. It has a rounded top with a wide flat bottom and a cross drive that’s easy to work with on assembly lines.

These screws show up in computers, kitchen appliances, car dashboards, control boxes, and small motors. Workers like them because the tool almost never slips and scratches the part. They’re great for anything built over and over again the same way.

Where Are Countersunk Socket Screws Most Frequently Applied?

Countersunk socket screws are loved because they vanish into the surface when tightened.

Flush-Mounted Surfaces for Safety and Aesthetics

If a screw head sticking out could catch clothes, tools, or look ugly, countersunk screws solve the problem. On factory walkways, stainless-steel handrails, metal cabinets, or aluminum frames, they leave a smooth, safe, professional finish.

Precision Machinery Requiring Compact Fastening

Inside tight machines and robots, there’s often no room for a screw head that sticks up. A countersunk socket screw sits down in its hole, so moving parts can slide right over it without hitting anything. That tiny detail keeps machines running smoothly and safely.

Equipment Frames with Limited External Clearance

On guide rails, machine beds, and fixtures, DIN 7991 countersunk screws are common because they don’t take up extra space on the outside. Everything stays neat and nothing rubs or wears out too soon.

Why Are Self-Drilling Screws Essential in Metal Fabrication?

Metal workers hate wasting time. Self-drilling screws let them finish the job faster and more cleanly.

One-Step Drilling and Fastening for Speed

With a normal screw you drill a hole, change tools, then drive the screw. Self-drilling screws do both jobs at once. On a big roof or wall made of steel sheets, that speed adds up fast—one tool, one motion, hundreds of screws done quicker.

Strong Thread Engagement in Steel or Aluminum Panels

The sharp drill point bites into the metal and cuts perfect threads as it goes. Qewit makes different drill-point sizes for thin sheets or thicker plates. Once it’s in, the grip is tight and trustworthy.

Vibration-Resistant Joints for Roofing and Cladding

Roofs expand and contract with heat and battle strong winds. The flange head presses a larger area and helps the screw stay tight for years. That means fewer leaks and fewer call-backs for the installer.

In Which Scenarios Are Machine Screws the Most Practical Choice?

When parts already have threaded holes, machine screws are usually the smartest and cleanest option.

Consistent Fastening for Electronic and Electrical Devices

Electronics, lights, controllers, and small appliances almost always use machine screws. They give a neat look, hold everything steady, and let technicians open the case again later without damage.

Secure Connections for Pre-Tapped Components

Factory parts often come with ready-made threads. Machine screws slide in smoothly without ruining those threads. You see them in measuring tools, automation gear, metal desks, and shelves.

Multi-Material Assembly in Consumer and Industrial Products

They work great when metal meets plastic—like in printers, coffee machines, or control panels. Because they follow worldwide standards, big companies can order the exact same screw anywhere in the world. Qewit keeps huge stock so orders arrive fast.

How Does Qewit Support Quality and Global Reliability in Fastener Supply?

Finding the perfect screw is only half the battle. You also need a supplier you can trust every time.

Rigorous Testing and International Standard Compliance

Qewit checks every batch hard—pull tests, hardness tests, salt-spray for rust, thread gauges, torque tests, and sometimes cameras that look at every single screw. Customers can get official paperwork like 3.1 certificates or PPAP reports if their job needs it. The result is the same high quality no matter if the screws are plain steel, stainless, or special alloy.

Diverse Material and Finish Options for Global Projects

Some jobs need cheap zinc-plated screws indoors. Outdoor steel needs hot-dip galvanizing (HDG). Car parts often want zinc flake or Geomet coating. Wet or chemical areas need stainless. Qewit stocks all of them so buyers don’t have to hunt around different sellers.

Bespoke Fastener Solutions With Full Traceability

If a project needs a weird size or special strength, Qewit can make it from your drawing. They can add thread locker, special plating, or extra machining. Every part can be traced back to the exact factory batch, which big companies love for safety records.

FAQ (häufig gestellte Fragen)

Q1: Are self-drilling screws suitable for thicker steel plates?

A: They work great up to the limit of their drill point. For really thick steel, it’s usually better to pre-drill or use a different heavy-duty fastener.

Q2: Why choose countersunk screws over pan head screws?

A: Countersunk screws sit flat or below the surface—perfect when you want a smooth top for looks or safety. Pan head screws are better when the head can sit proud.

Q3: Can machine screws be reused?

A: Yes, usually many times, as long as the threads are still good and you didn’t over-tighten and stretch them before.