S-95446A130 4-40 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 360 Brass material, ideal for harsh environments and reducing maintenance costs
• Precise alignment and smooth rotation ensured by the Class 2A thread fit and precisely machined shoulder with tight tolerances
• High mechanical strength offering 40,000 psi tensile and 22,000 psi shear strength for reliable load-bearing in demanding applications
• Easy installation and removal with 5/64" hex socket drive, minimizing tool slippage and assembly time
• Durable performance backed by Rockwell B55 hardness, resisting wear and deformation under stress
• Broad compatibility with 4-40 UNC coarse threads, fitting standard components and reducing inventory complexity
• Environmental and regulatory safety through RoHS 3 and REACH compliance, supporting sustainable manufacturing practices

Professional Applications & Engineering Value

This 4-40 UNC thread brass shoulder screw is engineered to address critical challenges in precision assemblies, such as misalignment and component wear. The 360 Brass construction provides excellent corrosion resistance, making it suitable for electrical connectors, marine equipment, and automotive systems where moisture exposure is a concern. The Class 2A fit and precisely toleranced shoulder ensure smooth bearing surfaces, reducing friction and extending service life in rotating mechanisms like pivots and guides. With a coarse thread design and 5/32" thread length, it offers quick fastening and reliable holding power in thin materials, while the socket head allows for compact installations in confined spaces. Ideal for industrial automation and precision instruments, this screw enhances operational reliability and minimizes downtime.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 2A fit for consistent dimensional accuracy, featuring a shoulder diameter tolerance of -0.002" to 0" and length tolerance of 0" to 0.003". It complies with RoHS 3 (2015/863/EU) under exemption 6(c) for lead in copper alloys and REACH (EC 1907/2006) regulations, ensuring environmental safety and industry reliability.