LOBO DIN912 UNI5931 ISO4762 12.9 M20x60

LOBO High-Tensile Socket Head Cap Screws

Description

This is a bulk box of 50 new-old-stock hexagon socket head cap screws, manufactured by LOBO in Italy. These M20 x 60mm bolts are engineered to the highest standards, meeting DIN 912 and ISO 4762 specifications. With a property class of 12.9, they provide exceptional tensile strength and durability for demanding industrial, automotive, and construction applications where connection integrity is paramount.

Specifications

• Manufacturer: LOBO
• Product Type: Hexagon Socket Head Cap Screw
• Standard: Conforms to DIN 912, ISO 4762, and UNI 5931
• Dimensions: M20 (20mm Diameter) x 60mm (Length)
• Property Class (Strength): 12.9
• Material: High-Tensile Alloy Steel
• Quantity: 50 Pieces

Label Info

• Brand: LOBO
• Part Number: M20 X 60
• Lot Number: 1644101

Application

Ideal for high-stress fastening applications in machinery, structural steelwork, engine assembly, and tooling. The 12.9 strength class ensures reliable performance under heavy loads and vibrations.

Country of Origin

Made in Italy.

CO2 Impact

Opting for these readily available screws prevents the emission of approximately 22 kg of CO2 compared to manufacturing a new batch, which is equivalent to the charging of over 2600 smartphones.

Availability

This box of 50 screws is in stock and ready for immediate dispatch. Order now from spareparts2day for expert support and fast delivery.

FAQ

What is the difference between DIN 912, ISO 4762, and UNI 5931?

These are German (DIN), International (ISO), and Italian (UNI) standards for hexagon socket head cap screws. For most practical purposes, they are interchangeable and define the same dimensional and material specifications for the bolt.

What does the ‘12.9’ property class signify for these M20 bolts?

Property Class 12.9 is one of the highest standard strength classes for steel bolts. The ’12’ indicates a nominal ultimate tensile strength of 1200 MPa, and the ‘.9’ indicates that the bolt will begin to yield at 90% of the ultimate tensile strength (1080 MPa). This makes them suitable for very high-load applications.

What is the recommended tightening torque for a 12.9 M20 bolt?

The recommended tightening torque can vary based on lubrication and application, but for a standard, dry (unlubricated) M20 12.9 bolt, a typical torque value is around 600-650 Newton-meters (Nm). Always consult your engineering specifications for the exact value required for your application.

Current Date: March 13, 2026

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