S-91280A149 M4 x 45 mm ISO 4014, DIN 931, ISO 898 Medium-Strength Metric Class 8.8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Enhanced Durability - Zinc plating provides superior corrosion resistance, extending service life in demanding industrial environments
• High Tensile Performance - Class 8.8 steel construction delivers 110,000 psi tensile strength for reliable load-bearing applications
• Optimized Thread Engagement - Partially threaded design with 13mm thread length ensures secure fastening while reducing material stress
• Precision Engineering - Class 6h thread fit guarantees consistent performance and compatibility with standard metric components
• Easy Installation & Removal - External hex drive and 7mm head width allow for straightforward tool access and torque application
• Industrial-Grade Hardness - Rockwell C21 rating maintains structural integrity under vibration and repeated stress
• Global Compliance - Meets ISO 4014/DIN 931 specifications for international project requirements and quality assurance

Professional Applications & Engineering Value

These M4 hex head screws deliver exceptional engineering value through their Class 8.8 steel construction and zinc plating surface treatment. The combination addresses critical industrial challenges including vibration resistance, environmental exposure, and mechanical stress. The partially threaded configuration with coarse thread spacing provides optimal clamping force distribution while preventing thread stripping in softer materials. Engineered for machinery assembly, equipment manufacturing, and structural applications, these metric hex screws maintain dimensional stability across temperature variations and loading conditions. The right-hand thread design ensures compatibility with standard industrial components, making them ideal for maintenance, repair, and production line applications where reliability and quick installation are paramount.

Specification Summary & Compliance

Manufactured to precise Class 6h thread fit tolerances with M4 x 0.7mm coarse thread specifications. These fasteners strictly adhere to ISO 4014 and DIN 931 manufacturing standards, ensuring dimensional accuracy and mechanical performance. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming they are free from restricted substances. The ISO 898 mechanical properties standard guarantees consistent Class 8.8 strength classification across production batches for reliable performance in critical applications.