Socket Head Cap Screw Supplier In China
Ningbo Teng Qi Fasteners Co., Ltd is a professional socket head cap screw supplier in China. A Socket Head Cap Screw (SHCS) is a type of fastener with a cylindrical head and an internal hexagonal drive, also known as a socket drive. This drive allows the screw to be tightened or loosened using an Allen wrench or hex key. The cylindrical head of the socket head cap screw is typically slightly larger in diameter than the threaded portion of the screw.
Socket head cap screws are designed to provide a secure and flush fit when installed. The socket drive enables higher torque to be applied during installation compared to other types of screws, making them suitable for applications where a strong and reliable connection is required.
These screws are commonly used in a wide range of industries and applications, including machinery, automotive, electronics, furniture assembly, and more. They come in various materials, sizes, and finishes to suit different requirements. The socket head cap screw’s clean and low-profile appearance makes it popular in situations where aesthetics and functionality are both important.
Specification:
The specification of a socket head cap screw includes several important parameters that define its size, thread characteristics, material, and other relevant details. Here are some common specifications you might find for socket head cap screws:
| Product Name | Socket head cap screw |
| Size | Metric: M1.4-M100 Imperial:0#" to 4" |
| Length | Metric: Up to 800mm Imperial: Up to 30" |
| Class | 4.8/6.8/8.8/10.9/12.9 A2-70 A2-80 A4-70 A4-80 |
| Grade | SAE J429 GR.2/5/8 |
| Material | Steel/Stainless steel/Brass/Aluminum |
| Manufacturing Process | wire drawing, cold heading/hot forging, thread rolling, heat treatment, surface treatment |
| Surface treatment | Black Oxide Coating/Zinc Plating (Electroplating)/Hot-Dip Galvanizing/Mechanical Galvanizing/Dacromet Coating/Painting or Powder Coating |
| Application Industry | Construction/Agricultural Machinery/Industrial Structures/Equipment and Machinery/Infrastructure |
When specifying socket head cap screws, it’s important to consider the specific requirements of your application, including the load, material compatibility, and environmental conditions.
Type of Socket head cap screw:
Socket Head Cap Screws (SHCS) come in various types, each with specific features suited for different applications. Here are some common types of socket head cap screws:
1. Standard Socket Head Cap Screw: This is the most basic type of SHCS with a cylindrical head and an internal hexagonal drive.
2. Button Head Socket Cap Screw: These screws have a rounded, low-profile head that provides a smooth and stylish appearance. They are often used in applications where aesthetics matter.
3. Flat Head Socket Cap Screw: These screws have a countersunk head that sits flush with the surface it’s installed into. They are commonly used when a flush finish is required.
4. Low Head Socket Cap Screw: This type has a head that is shorter in height compared to standard socket head cap screws. It is used in applications with limited vertical space.
5. Socket Cap Screw with Vent Hole: These screws have a small hole drilled through the threaded portion. This hole allows trapped air or fluids to escape during installation, preventing pressure build-up.
6. Knurled Socket Cap Screw: Knurled screws have a textured or ridged section on the head’s circumference, providing extra grip for manual installation.
7. Cone Point Socket Set Screw: These screws have a pointed tip that helps them bite into the target material, providing a secure grip. They are often used to hold components in place on shafts.
Quality control of socket head cap screw:
In a world where connections matter, Ningbo Teng Qi Fasteners is more than just a fasteners supplier and manufacturer. We are architects of stability, builders of relationships, and champions of your success. From skyscrapers that reach for the sky to machines that power industries, our fasteners form the backbone of progress. When you choose Ningbo Teng Qi Fasteners, you choose unwavering quality, exceptional service, and a partner who understands that every bolt holds a piece of your vision.
| Inspect Item | Detail |
|---|---|
| Dimensional Inspection | Critical dimensions such as bolt diameter, head width, head height, bolt length and thread length are checked using calibrated measuring equipment. Inspection is carried out according to the applicable dimensional standard or customer drawings to ensure consistent fit and interchangeability. |
| Thread Inspection | External threads are inspected using calibrated GO and NO-GO thread gauges to verify thread profile, pitch and dimensional conformity. Additional measurements can be performed when tighter thread tolerances or specific customer requirements apply. |
| Mechanical Testing | Mechanical properties are verified according to the specified material and strength grade. Depending on the applicable standard, testing may include tensile strength, yield strength, hardness and other required mechanical tests, with test results documented in the relevant inspection or material reports. |
| Surface & Coating Inspection | Bolt surfaces are inspected for appearance, defects, coating uniformity and other specified requirements. For coated fasteners, coating thickness and adhesion or other applicable coating characteristics can be checked according to the specified surface treatment standard. |
| Final Inspection & Testing | Before shipment, finished hex bolts undergo final inspection to confirm dimensions, thread quality, mechanical requirements, surface condition, marking and packaging. Inspection records and test reports can be provided according to the order specification and customer requirements. |