S-92952A110 4-40 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Enhanced grip and torque application through the combination of knurled round head and 5/64" hex drive
• High tensile strength of 70,000 psi ensures reliable performance under demanding mechanical loads
• Precise thread engagement with Class 2A UNC coarse threads for secure fastening and vibration resistance
• Quick manual operation thanks to the thumb screw design with right-hand threading for efficient assembly
• Durable material hardness at Rockwell B83 maintains thread integrity and extends service life
• Compliance with environmental regulations including RoHS 3 and REACH for safe, sustainable use

Professional Applications & Engineering Value

This 4-40 UNC thumb screw delivers exceptional value in applications requiring frequent adjustments or tool-less operation, such as electronic enclosures, machinery guards, and precision instruments. The 18-8 stainless steel provides excellent corrosion resistance, crucial for environments exposed to moisture or chemicals. The knurled head and hex drive offer dual gripping options, enhancing usability while the coarse thread ensures rapid installation and reduced cross-threading risks. With a 70,000 psi tensile strength and Rockwell B83 hardness, it withstands repetitive use without deformation, making it a reliable choice for maintenance-heavy industrial settings where durability and compliance with RoHS 3 and REACH standards are paramount.

Specification Summary & Compliance

This shoulder screw adheres to UNC coarse thread standards with a Class 2A thread fit for precise tolerance. Dimensions include a 4-40 thread size, 5/32" thread length, and 1/8" shoulder diameter with tight tolerances for accurate alignment. It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental safety and regulatory adherence for global industrial use.