Screws with spacers

Technical Specifications

Technical Specifications
Screws with spacers are highly versatile and widely used components.

These screws are essential for ensuring the proper functioning of industrial equipment, such as machine tools, precision instruments, and assembly processes.

 

Screw: Class 12.9 steel (UNI 5931 DIN 912)
Washer: Hardened and black oxide treated steel; 100 Kg/mm² tensile strength
Spacer: Hardened and ground steel; 120 – 140 Kg/mm² tensile strength

 

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Shoulder screws

Technical Specifications

Shoulder screws are used in machine tools, precision equipment, and assembly processes. Their ability to precisely adjust component length or height makes them essential for accurate assembly and optimal equipment operation.

 

Special Springs offers a complete range of shoulder screws.

Material: High-strength alloy steel for ISO 12.9 fasteners
Hardness: 37÷43 HRC
Ultimate tensile load: Rm = 1200 N/mm² min.
Yield strength: Rp 0.2 = 1080 N/mm² min.
Elongation: A = 8% min.

 

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