S-91239A753 M2.5 x 4 mm ISO 7380 Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional durability and corrosion resistance with Black-Oxide Alloy Steel, ideal for harsh industrial environments.
• High tensile strength of 140,000 psi and Class 10.9 rating ensure reliable performance under heavy loads.
• Rockwell C32 hardness provides superior wear resistance and long-term fastener integrity.
• Fully threaded design with Class 6g fit offers consistent engagement and vibration resistance in assemblies.
• Hex drive (1.5mm) and rounded button head enable easy installation and a low-profile, finished appearance.
• Compliance with ISO 7380 guarantees dimensional accuracy and interchangeability in metric applications.
• RoHS 3 and REACH compliant for use in regulated industries without hazardous substance concerns.

Professional Applications & Engineering Value

This M2.5 metric rounded head screw is engineered from Black-Oxide Alloy Steel to address critical industrial needs for corrosion resistance and high strength in compact assemblies. Its Class 10.9 strength rating and 140,000 psi tensile strength make it suitable for demanding applications in automotive, electronics, and machinery, where failure is not an option. The fully threaded design with coarse thread (0.45mm pitch) ensures rapid installation and secure fastening in metals and plastics, reducing the risk of loosening under vibration. With a hex drive and button head style, it offers tool accessibility and a sleek profile, ideal for space-constrained environments while meeting ISO 7380 standards for reliability.

Specification Summary & Compliance

This fastener adheres to precise metric dimensions including M2.5 thread size, 0.45mm pitch, and 4mm length, with a Class 6g thread fit for consistent tolerance. It conforms to ISO 7380 for rounded head screws and is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental safety and regulatory adherence in global supply chains.