S-93701A250 4-40 x 3/16" Steel Pan Head Torx Plus Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black protective coating, extending service life in harsh environments
• Enhanced torque transmission through Torx Plus drive (IP10/T10), reducing cam-out and tool wear
• Precision Class 3A thread fit ensuring secure fastening and vibration resistance in critical assemblies
• High-strength steel construction delivering 40,000 psi tensile strength for demanding mechanical applications
• Optimized pan head design providing low-profile clamping with standard rounded head profile
• Full threading enabling maximum grip length across the entire 3/16" shaft
• Regulatory compliance meeting RoHS 3 and REACH standards for global industrial use

Professional Applications & Engineering Value

Engineered for precision assemblies requiring reliable fastening under stress, these 4-40 UNC rounded head screws combine black corrosion-resistant steel with Torx Plus drive technology to solve common industrial challenges. The Class 3A thread fit maintains tight tolerances in vibrating environments, while the 40,000 psi tensile strength and Rockwell B70 hardness ensure structural integrity in automotive, electronics, and machinery applications. The fully threaded design maximizes engagement in thin materials, and the pan head profile offers consistent clamping without protruding. Ideal for OEM production lines and maintenance operations where corrosion resistance and drive stability are critical.

Specification Summary & Compliance

This fastener maintains UNC coarse threading with Class 3A precision fit per inch-system standards, featuring a 4-40 thread size and 3/16" length. Manufacturing adheres to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental safety in industrial components. The Torx Plus IP10/T10 drive provides consistent engagement, while material properties guarantee performance up to specified tensile and hardness ratings.