ANTI ROTATION SCREW
ANTI ROTATION SCREW Structure

ANTI ROTATION SCREW

An ANIT ROTATION SCREW is a fastening component with an anti-rotation structure. After installation, features such as a square neck, flats, knurling, serrations, or specially shaped shank engage with the workpiece hole to restrict rotation of the screw body. It is suitable for one-sided fastening, confined installation spaces, and assembly locations where holding the screw head during tightening is difficult.

Product Name: ANTI ROTATION SCREW / Anti-Rotation Screw / Non-Rotating Bolt
Anti-Rotation Features: Square neck, flats, knurling, serrations, or specially shaped shank
Head Types: Round head, low-profile round head, flat head, hex head, or other specified head types
Drive Types: No drive recess, slotted, Phillips, hex socket, Torx, or other specified drive types
Thread Specifications: Metric, imperial, coarse thread, fine thread, or other special thread profiles
Primary Dimensions: Thread diameter, thread pitch, length, neck dimensions, and head dimensions
Applicable Hole Types: Round hole, square hole, specially shaped hole, or preformed press-fit hole
Materials: Carbon steel, stainless steel, alloy steel, or other specified materials
Heat Treatment: Quench-and-temper treatment, carburizing, quenching, or other treatments according to strength requirements
Surface Treatments: Zinc plating, nickel plating, black oxide, Dacromet coating, passivation, or other specified finishes
Production Methods: Cold forging, turning, thread rolling, and knurling
Production Options: Standard specifications or custom production based on drawings
Inspection Items: Dimensions, threads, hardness, torque resistance, and appearance

Category:

Restricts Screw Rotation

The anti-rotation structure engages with the workpiece hole, helping prevent the screw from turning together with the nut during tightening or removal.

Suitable for One-Sided Fastening

Once installed, fastening can be completed from the nut side only, making the ANTI ROTATION SCREW suitable for applications where access to the back side is difficult, installation space is limited, or the structure is enclosed.

Improves Assembly Stability

Square necks, serrations, or knurled sections increase engagement with the workpiece, helping maintain the screw orientation and installed position.

Reduces the Need for Additional Holding Tools

During tightening, an additional tool is generally not required to hold the screw head in place, helping simplify the assembly process and improve operating efficiency.

Supports Special Hole Designs

Neck dimensions and anti-rotation features can be customized according to sheet thickness, hole shape, and torque-resistance requirements. ANTI ROTATION SCREWS are commonly used in sheet metal assemblies, machinery, automotive components, and furniture hardware.

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