S-99894A150 1/4"-20 x 2 1/2" MS90725-16 Mil. Spec. Medium-Strength Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional Load-Bearing Capacity with 120,000 PSI tensile strength and Grade 5 classification, ensuring reliable performance under high-stress conditions.
• Superior Corrosion Resistance from cadmium plating, extending service life in harsh industrial environments and reducing maintenance frequency.
• Optimized Thread Engagement with UNC coarse threads and Class 2A fit, providing secure fastening and resistance to vibration loosening.
• Enhanced Durability through Rockwell C25 hardness, maintaining structural integrity and preventing wear during repeated use.
• Efficient Installation enabled by the external hex drive and 7/16" head width, allowing for quick tightening with standard tools.
• Versatile Partial Threading design with 3/4" minimum thread length, offering flexibility for applications requiring unthreaded shank sections.
• Regulatory Compliance Assurance meeting MS90725-16, RoHS 3, and REACH standards, ensuring safety and environmental responsibility.

Professional Applications & Engineering Value

This Grade 5 hex head screw is engineered to address critical fastening challenges in heavy-duty industrial settings. The cadmium plated steel construction provides robust protection against corrosion, making it ideal for machinery, structural assemblies, and outdoor equipment exposed to moisture or chemicals. The 1/4"-20 UNC coarse thread with Class 2A fit ensures precise alignment and strong grip in materials like metal and hardened plastics, reducing the risk of thread stripping. Partially threaded design allows for controlled clamping force, preventing joint distortion in applications such as automotive frames or construction brackets. With high tensile strength and external hex drive, it delivers reliable, vibration-resistant connections that minimize downtime and maintenance costs in demanding environments.

Specification Summary & Compliance

The screw features a 1/4"-20 UNC coarse thread with Class 2A dimensional accuracy for consistent fit. It complies with MS90725-16 manufacturing specifications and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulatory requirements, ensuring environmental safety and material restrictions adherence.