Dongguan Guanbiao Hardware Products Co., LTD
Dongguan Guanbiao Hardware Products Co., LTD Innovation is the foundation, quality is the life, pragmatism is the purpose, and efficiency is the goal. Customer satisfaction is our ultimate goal.
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SEMS Screws Carbon steel machine screws Product Description
SEMS Screws also called SEMS bolts are a triple combination part or two combination parts with spring and flat washers known as double SEMS screws, it is made of ordinary screws with spring flat washers. When the washer is put on, it will not fall off. with the different drive systems, Phillips, Torx, hex socket, External Hex Drive, and different materials stainless steel and steel with black and nickel plating finished.
Combination screws are made from various materials to meet different application requirements. The most common materials include:
Combination screws come in various thread sizes to accommodate different fastening needs. The most common specifications include:
Metric SEMS screws size M1.6 M2 M2.5 M3 M4 M5 M6 M8 M10 M12
SEMS Screws Size
Combination screws are available in a wide range of sizes, with lengths varying from a few millimeters to several tens of millimeters. Custom sizes can be produced based on customer requirements.
To enhance corrosion resistance and appearance, combination screws undergo different surface treatments, including:
| Category | Details |
|---|---|
| Material | - Stainless Steel (SUS304, SUS316) – Corrosion-resistant and durable |
| - Carbon Steel – High strength after heat treatment | |
| - Alloy Steel – Excellent toughness and load-bearing capacity | |
| Thread Size | - M3, M4, M5, M6 (Other sizes available upon request) |
| Length | - Available in multiple lengths (few mm to several cm) |
| Head Type | - Phillips, Slotted, Hex, Torx, etc. |
| Washer Type | - Flat Washer, Spring Washer, Serrated Washer |
| Surface Treatment | - Zinc Plating – Anti-rust protection |
| - Nickel Plating – Enhanced wear and corrosion resistance | |
| - Zinc-Nickel Alloy Coating – Superior corrosion resistance | |
| Applications | - Electrical and power installations |
| - Machinery and electronic assembly | |
| - Household appliances and furniture | |
| - Automotive and shipbuilding industries | |
| Customization | - Custom sizes, head types, and coatings available upon request |
Combination screws are widely used across multiple industries to meet various fastening needs, such as:
With various materials, specifications, and surface treatment options, combination screws are an essential fastening component in many industries.