Hexagonal Screw – M4 x 45 UNI5931-8.8

The Hexagonal Screw M4 x 45 UNI5931-8.8 is a precision-engineered fastener manufactured from grade 8.8 hardened steel. Built to meet UNI5931 standards, this screw offers superior tensile strength and reliability, making it ideal for pumps, skids, softwash rigs, sprayers, and industrial equipment.

Its 45 mm length provides secure fastening for deeper assemblies, while the durable construction ensures long service life in high-vibration and heavy-duty applications. With a protective finish, it also resists corrosion, chemicals, and wear, making it suitable for softwash and pressure washer environments.

Specifications & Features:

• Part Type: Hexagonal Screw (Bolt)

• Standard: UNI5931

• Thread Size: M4

• Length: 45 mm

• Strength Class: 8.8 hardened steel

• Finish: Corrosion-resistant protective coating

• Benefits:

  • OEM-style precision fit

  • High-strength steel for demanding applications

  • Resistant to wear, vibration, and chemical exposure

  • Ensures secure fastening in equipment assemblies

Applications:

• Softwash pumps and skids

• Pressure washer assemblies

• Agricultural sprayers

• Industrial machinery and maintenance

• #2 on diagram