S-94361A355 3/8"-24 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 140,000 psi ensures reliable performance in demanding applications, reducing the risk of fastener failure.
• Precision Class 3A thread fit guarantees tight, secure connections with minimal backlash, ideal for assemblies requiring exact alignment.
• Black oxide finish provides enhanced corrosion resistance, extending service life in various industrial environments.
• Knurled socket head offers improved grip during installation, allowing for easier handling and reduced tool slippage.
• Fine UNF threading delivers superior vibration resistance and holding power compared to coarse threads, maintaining joint integrity.
• Alloy steel construction with Rockwell C32 hardness combines durability and wear resistance, suitable for high-stress mechanical uses.
• RoHS and REACH compliance ensures environmental and safety standards are met, supporting responsible manufacturing and supply chain requirements.

Professional Applications & Engineering Value

This shoulder screw is engineered to address critical needs in precision machinery, such as providing accurate shoulder positioning in assemblies like rotating shafts, linkages, and pivots. The alloy steel material and UNF fine threading work together to resist loosening under dynamic loads, a common issue in vibrating equipment. The black oxide finish adds a layer of protection against rust, making it suitable for environments exposed to moisture or chemicals. With its 1/2" shoulder diameter and Class 3A thread fit, it ensures minimal play and precise alignment, reducing wear and maintenance in industrial automation, automotive, and aerospace applications. This design minimizes assembly errors and enhances operational reliability, delivering long-term cost savings.

Specification Summary & Compliance

The screw features a 3/8"-24 UNF thread with Class 3A tolerance for high precision, along with a shoulder diameter of 1/2" and tolerances of -0.004" to -0.002". It adheres to industry standards for dimensional accuracy and is compliant with RoHS 3 (2015/863/EU) with exemption 6(a) and REACH (EC 1907/2006), ensuring it meets environmental and safety regulations for global use.