S-90277A110 4-40 x 1/2" ASME B18.6.3 Steel Binding Head Slotted Screws
Steel Binding Head Slotted Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding industrial environments
- Exceptional mechanical strength with 60,000 psi tensile strength and Rockwell B69 hardness for reliable performance under stress
- Wide binding head design provides increased bearing surface for secure fastening and reduced surface damage
- Class 2A thread fit ensures consistent assembly with standard mating components while maintaining clearance for easy installation
- Coarse UNC threading delivers faster installation and reduced cross-threading risk in production environments
- Full threading along 1/2" length enables maximum adjustability and secure fastening throughout the entire engagement
- Slotted drive compatibility allows for quick installation and removal with standard screwdriver tools
Professional Applications & Engineering Value
These 4-40 UNC zinc-plated steel rounded head screws deliver critical performance advantages for industrial assembly applications where reliability and compliance are paramount. The binding head design with wide rounded profile distributes clamping force effectively, preventing damage to sensitive materials while maintaining secure fastening. The zinc-plated steel construction provides essential corrosion protection for equipment exposed to industrial atmospheres, while the coarse thread configuration ensures rapid assembly in high-volume manufacturing operations. Engineered to meet rigorous ASME B18.6.3 standards, these fully threaded screws offer consistent performance in electrical enclosures, machinery assemblies, and precision equipment where vibration resistance and long-term reliability are essential requirements.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2A thread fit tolerance for consistent mating with standard components. These 4-40 UNC coarse thread screws comply with ASME B18.6.3 specifications for dimensional accuracy and performance requirements. The product meets RoHS 3 (2015/863/EU) compliance for restricted substance control and REACH (EC 1907/2006) regulations for chemical safety, ensuring environmental responsibility and regulatory adherence for global industrial applications.
