Cap Allen Bolt And Square Nut

Socket head cap screws are made of high-strength alloy steel with black oxide or zinc plating for good corrosion resistance. Their cylindrical head features a precision hexagon socket that allows the wrench to fit tightly, ensuring even force distribution and preventing cam-out. These screws are ideal for machinery assembly where space is limited or a flush surface is required. Square nuts have a regular hexahedral shape with larger side contact area than hex nuts. When inserted into a matching square recess, they resist rotation due to their sharp edges, preventing spinning during tightening. Used together, the socket head cap screw and square nut are especially suitable for wooden furniture, simple machine frames, and quick-positioning assembly applications.

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Advantages

  • Custom grip geometry

Knurl pitch, depth, angle, and head diameter can be adjusted to achieve different grip feel, torque response, and appearance.

  • Better operation by hand
A properly designed knurled head helps reduce slipping during manual tightening and improves usability in repeated-access
applications.
  • Flexible structural design

Thread size, shank length, shoulder form, underhead support, and end details can be adapted to different assemblies.

  • Consistent product experience

Stable control of knurl shape and head dimensions helps maintain grip quality, appearance consistency, and assembly performance.

Industry Applications

Electronic Enclosures and Panels

Used for securing covers, panels, and housings that require regular access. Allows quick opening without tools while maintaining reliable fastening.

Equipment Adjustment and Calibration

Ideal for parts that need manual positioning or adjustment, such as brackets, sliders, or fixtures. Enables precise control with simple hand operation.

Light-Duty Assemblies and Fixtures

Applied in assemblies where convenience and speed are more critical than high torque, supporting efficient operation in production and maintenance environments.