S-90276A115 4-40 x 1" ASME B18.6.3 Steel Round Head Slotted Screws
Steel Round 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
- Enhanced corrosion resistance with zinc-plated steel construction for reliable performance in demanding industrial environments.
- Superior tensile strength rated at 60,000 psi ensures high load-bearing capacity and reduces risk of fastener failure.
- Precise Class 2A thread fit provides smooth assembly and secure fastening with consistent engagement.
- Fully threaded design offers maximum grip length and uniform stress distribution across the entire fastener.
- Standard slotted drive enables easy installation with common tools while maintaining rounded head aesthetics.
- Compliance with major industry standards including ASME B18.6.3 ensures dimensional accuracy and interchangeability.
- Environmental regulation compliance with RoHS 3 and REACH demonstrates commitment to sustainable manufacturing practices.
Professional Applications & Engineering Value
These 4-40 UNC zinc-plated steel screws deliver exceptional engineering value across multiple industrial sectors. The coarse thread design combined with Class 2A thread fit ensures rapid assembly and reliable performance in vibration-prone applications. The zinc-plated surface treatment provides critical corrosion protection for equipment exposed to harsh environments, while the rounded head profile with slotted drive style offers both aesthetic appeal and practical installation benefits. With Rockwell B69 hardness and 60,000 psi tensile strength, these fully threaded screws maintain structural integrity under significant mechanical stress, making them ideal for precision assemblies in electronics, machinery, and automotive components where consistent performance and regulatory compliance are paramount.
Specification Summary & Compliance
This 1" length screw features precise 4-40 UNC coarse threads with Class 2A thread fit tolerance for optimal engagement. Manufacturing conforms to ASME B18.6.3 specifications ensuring dimensional accuracy and interchangeability. The product meets RoHS 3 (2015/863/EU) compliance for restricted substances and REACH (EC 1907/2006) regulations, demonstrating environmental responsibility while maintaining the mechanical properties required for industrial fastening applications.
