| Product Part No. | ALSA0420097 |
| Description | Flat Head Hex Socket Machine Screw with Pointed End |
| Specification | M5 × 11.02 CMA |
| Material | 10B21 |
| Surface Treatment | Zinc-Nickel Alloy Plating + Blue Threadlocker |
| Application Industry | Door and Window Hardware |




The Flat Head Hex Socket Self-Tapping Screw is designed for fastening applications in door and window hardware assemblies. Model ALSA0420097 features an M5 thread, 11.02 mm length, flat head, internal hex drive, and pointed self-tapping design.
Manufactured from 10B21 steel, the screw is finished with a zinc-nickel alloy coating and blue locking adhesive, providing a practical fastening solution for hardware components that require stable assembly and surface protection.
As a professional Self Tapping Screw factory, we focus on supplying screws according to customer drawings, specifications, materials, surface treatments, and application requirements for B2B hardware projects.
The flat head is designed for applications where the screw head needs to sit close to or flush with the mating component after installation.
This structure is suitable for door and window fittings where installation space and finished appearance are important.
The internal hex drive provides positive tool engagement during assembly and is suitable for controlled tightening in hardware production.
It also allows the screw to be installed in applications where a conventional external wrench may not be practical.
The pointed tip helps the screw enter the mating component during installation.
The Self-Tapping Screw structure is designed to form or engage threads during fastening, helping simplify assembly in compatible materials.
Actual fastening performance should be verified according to the mating material, hole size, material thickness, and installation torque.
Product Part No. | ALSA0420097 |
Description | Flat Head Hex Socket Machine Screw with Pointed End |
Specification | M5 × 11.02 CMA |
Material | 10B21 |
Surface Treatment | Zinc-Nickel Alloy Plating + Blue Threadlocker |
Application Industry | Door and Window Hardware |

A normal screw usually requires a pre-threaded hole or matching nut, while a self-tapping screw can create or form its own mating thread during installation in a compatible material. This can simplify assembly and reduce additional tapping operations.
It depends on the material, thickness, screw design, and application. Some self-tapping screws can be installed directly into softer materials, while metal applications often use a properly sized pilot hole to improve thread formation and installation consistency.
Self-tapping screws may also be referred to as tapping screws, thread-forming screws, or thread-cutting screws, depending on their specific thread and point design. The exact terminology can vary according to the application and screw structure.
A self-tapping screw is typically identified by its thread geometry and tip design, which allow it to form or cut threads in the mating material. Many models feature a pointed tip and specially designed threads for easier entry and fastening.
Yes. Most self-tapping screws can be removed using the correct screwdriver, hex key, or installation tool. However, repeated removal and reinstallation may affect the threads formed in the mating material, especially in softer materials.
The main limitations include possible thread damage from repeated installation, sensitivity to incorrect pilot-hole size, and reduced fastening performance if excessive torque is applied. For B2B assembly, the screw specification should be matched carefully to the material, hole size, and required installation torque.
Self-tapping screws are commonly used for fastening metal sheets, aluminum profiles, plastic components, door and window hardware, brackets, fittings, and other industrial assemblies. They are especially useful where manufacturers want to simplify installation and reduce separate thread-tapping operations.
| Product Part No. | ALSA0420097 |
| Description | Flat Head Hex Socket Machine Screw with Pointed End |
| Specification | M5 × 11.02 CMA |
| Material | 10B21 |
| Surface Treatment | Zinc-Nickel Alloy Plating + Blue Threadlocker |
| Application Industry | Door and Window Hardware |