S-98511A233 4-40 x 3/8" Aluminum Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from blue-anodized 7075 aluminum construction, ideal for harsh environments
• Precise thread engagement with Class 3A fit for reliable, vibration-resistant assemblies
• High-strength aluminum alloy provides excellent strength-to-weight ratio for demanding applications
• Easy installation and removal with standard hex drive socket and 3/32" drive size compatibility
• Full thread coverage along the 3/8" length ensures maximum grip and uniform load distribution
• Coarse UNC threading enables quick assembly and reduced cross-threading risks
• Compliance with environmental regulations including RoHS 3 and REACH for global market acceptance

Professional Applications & Engineering Value

These 4-40 UNC thread socket head cap screws deliver exceptional performance in precision assemblies where weight reduction and corrosion resistance are critical. The blue-anodized 7075 aluminum construction provides superior protection against oxidation and chemical exposure, making them ideal for aerospace, electronics, and marine applications. The Class 3A thread fit ensures tight tolerances and reliable performance in high-vibration environments, while the hex drive design allows for secure torque application in confined spaces. These fully threaded fasteners maintain consistent clamping force across the entire 3/8" length, preventing loosening under dynamic loads and ensuring long-term assembly integrity.

Specification Summary & Compliance

Manufactured to precise inch system dimensions with Class 3A thread fit tolerance per UNC standards. Features coarse thread spacing with right-hand thread direction and standard socket head profile. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in industrial applications worldwide.