S-94328A995 3/8"-16 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 140,000 psi ensures reliable performance under high-stress conditions, reducing the risk of fastener failure in demanding applications.
• Superior corrosion resistance provided by the black oxide finish prolongs service life and maintains integrity in harsh industrial environments.
• Precise shoulder positioning with a 1/2" diameter and tight tolerances enables accurate alignment and secure mounting of components.
• High thread accuracy with Class 3A fit offers consistent engagement and vibration resistance, minimizing loosening over time.
• Enhanced grip and easy installation from the knurled head and 1/4" hex drive, allowing for quick assembly without slippage.
• Durable alloy steel construction with Rockwell C30 hardness ensures long-term wear resistance and durability in repetitive use scenarios.
• Low-profile socket head design saves space in compact assemblies while maintaining accessibility for tool engagement.

Professional Applications & Engineering Value

This shoulder screw is engineered to address critical challenges in industrial settings, such as precise component alignment and secure fastening under dynamic loads. The alloy steel material, combined with a black oxide finish, provides robust protection against corrosion and wear, making it ideal for machinery, automotive, and aerospace applications where environmental factors are a concern. The UNC coarse thread and Class 3A thread fit ensure quick assembly and reliable hold in materials like metal and plastic, reducing installation time and maintenance needs. With its knurled head and low-profile socket, it offers ergonomic handling and space efficiency, solving common issues of slippage and limited access in tight spaces. This design supports efficient production lines and reduces downtime, delivering consistent performance in high-precision engineering tasks.

Specification Summary & Compliance

This shoulder screw adheres to precise dimensional standards, including a Class 3A thread fit for tight tolerances and UNC thread specifications. The shoulder diameter is 1/2" with a tolerance of -0.004" to -0.002", and the shoulder length is 1" with a tolerance of -0.005" to 0.005", ensuring accurate fit in assemblies. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious and regulated industrial applications without hazardous substances.