Application areas of screws

As fundamental, removable fasteners, screws are used across virtually all manufacturing sectors. They are categorized by industry below:

1. Construction and Steel Structure Engineering

Factory buildings, high-rise steel structures, bridges, wind turbine towers, photovoltaic (PV) mounting systems

Commonly used: Grade 10.9/12.9 high-strength bolts, hot-dip galvanized bolts, Dacromet-coated screws for PV systems

Curtain walls, aluminum doors and windows, framing/furring channels, canopies

Stainless steel screws, self-drilling screws

Highway guardrails, steel towers, power transmission towers, pipe supports

Hot-dip galvanized hex bolts, anchor bolts

2. Automotive and New Energy Industries (Largest market for high-end fasteners)

Traditional internal combustion engine vehicles: Chassis, engines, transmissions, car bodies, wheel hubs

40Cr/35CrMo high-strength bolts, flange bolts, wheel hub bolts

New Energy Vehicles (NEVs): Battery packs, electric motors, electronic control units (ECUs), vehicle frames, charging piles

Dacromet/Geomet-coated high-strength screws, hydrogen-embrittlement-resistant fasteners, stainless steel anti-loosening bolts

OEM components for buses, trucks, and heavy construction machinery

3. General Machinery and Equipment

Machine tools, pumps and valves, gear reducers, air compressors, injection molding machines

Textile machinery, food processing equipment, packaging machinery

Mining machinery, agricultural machinery (harvesters, tractors)

Characteristics: High-strength bolts, anti-loosening nuts, wear-resistant fasteners; 304/316 stainless steel screws for food-grade equipment

4. Home Appliance Industry

Major appliances: Refrigerators, washing machines, air conditioners, televisions, water heaters, range hoods

Small appliances: Hair dryers, high-speed blenders, coffee machines, kitchen and bathroom appliances

Common types: Phillips pan-head screws, self-tapping screws, stainless steel screws, micro-precision screws, mass-produced low-cost galvanized parts

5. Electronics and 3C Precision Manufacturing (Micro-screws)

Mobile phones, laptops, tablets, cameras, Bluetooth headsets, servers, circuit boards

Characteristics: Micro-precision screws, stainless steel SUS304/SUSXM7; miniature pan-head and Torx security screws; partially non-magnetic and corrosion-resistant options available.

6. Rail Transit & Marine/Offshore

High-speed trains, subways, rail carriages, and track fasteners

Specialized high-strength bolts (high-temperature and fatigue resistant)

Ships, yachts, offshore platforms, and seawater piping

316 stainless steel and duplex stainless steel fasteners (salt spray and seawater corrosion resistant)

7. Aerospace & Military Equipment

Aircraft airframes, engines, missiles, and precision instruments

Materials: Titanium alloy screws, superalloys, and ultra-high-strength alloy steel; lightweight, high-temperature resistant, and highly reliable; requires advanced manufacturing processes.

8. Furniture Hardware

Solid wood furniture, panel furniture, office desks/chairs, cabinetry, and bathroom vanities

Types: Furniture screws, expansion bolts, 3-in-1 connectors, self-tapping wood screws, and embedded nuts.

9. Piping, Plumbing & Sanitary Ware

Water valves, shower enclosures, showerheads, radiators, and water tanks

For humid environments: 304/316 stainless steel or brass nuts (rust-proof and leak-proof).

10. Photovoltaics, Energy Storage & New Energy

PV mounting systems, energy storage cabinets, outdoor charging piles, and battery storage cabinets

For outdoor environments with long-term sun exposure and salt spray: Dacromet coating, hot-dip galvanizing, or 304 stainless steel self-drilling screws.

11. Mold, Plastics & Injection Molding

Mold clamping screws, hex socket cap screws, high-temperature bolts, and ejector pin set screws.

12. Medical Devices

Surgical instruments, medical equipment, hospital beds, and diagnostic instruments

Requirements: Non-magnetic, corrosion-resistant, and hygienic; exclusively uses 316 stainless steel. Medical-grade stainless steel screws

13. Outdoor security and traffic infrastructure

Surveillance camera mounts, streetlights, traffic lights, traffic signs, guardrails, and security doors/windows

High demand for outdoor corrosion resistance; primarily galvanized steel and stainless steel

14. Plastic and construction material assembly

Color-coated steel roofing, sheet-metal structures, and light-gauge steel villas: Self-drilling screws

Plastic housings, lighting fixtures, and toys: Miniature self-tapping screws

15. High-temperature petrochemical equipment

Oil refining pipelines, high-temperature reactors, and boilers

Uses heat-resistant chromium-molybdenum alloy steel and high-temperature bolts; resistant to creep and loosening during prolonged high-temperature exposure