What is the HEXAGON SOCKET HEAD CAP SCREWS ?
Hex Socket Head Cap Screws are fasteners designed with a hexagonal socket in the head, allowing for easy installation and removal using an Allen wrench or hex key. They provide strong clamping force and are commonly used in machinery and equipment assembly, ensuring secure connections.
Hex Socket Head Cap Screws, also known as cap bolts or Allen screws, are fasteners with a cylindrical head featuring a hexagonal socket for tightening. They are designed for high-strength tightening in narrow spaces where traditional wrenches cannot fit. These screws offer advantages such as higher torque and clamping force compared to regular screws, often resulting in fewer screws needed for a given application. Hex Socket Head Cap Screws are widely used in various industries, including equipment manufacturing, machinery, and electronics, particularly in applications where space constraints or aesthetic considerations are important.”
What is the core structural difference between fully threaded and partially threaded hexagon socket head cap screws?
Fully threaded screws have continuous threads from the head to the end, suitable for thin-plate connections or scenarios requiring full-length thread engagement. Partially threaded screws have a smooth, unthreaded shank section between the head and the threaded part, which acts as a guide pin for alignment and reduces thread friction during installation.
What is the corresponding inch standard for alloy steel hexagon socket head cap screws, and what are its common grades?
The main inch standard is ASTM A574, and the common strength grades are Grade 2, Grade 5, and Grade 8. Grade 8 is equivalent to metric 12.9-grade in terms of tensile strength.











