S-94328A983 3/8"-16 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced Durability & Corrosion Resistance: Black oxide finish provides superior protection against rust and wear in demanding industrial environments.
• Precision Alignment & Positioning: Knurled head and low-profile socket design ensure secure, non-slip installation and accurate component alignment.
• High Tensile Strength for Heavy-Duty Use: 140,000 psi tensile strength and Rockwell C30 hardness offer reliable performance under high-stress conditions.
• Superior Thread Engagement: Class 3A UNC coarse threads ensure tight, secure fastening with reduced risk of cross-threading.
• Optimized Shoulder Dimensions: 1/2" shoulder diameter with tight tolerances provides stable bearing surfaces for precise machinery assembly.
• Easy Installation & Removal: Hex drive (1/4") allows for quick, tool-friendly installation in confined spaces.
• Compliance with Environmental Standards: Meets RoHS 3 and REACH regulations, ensuring safe use in regulated industries.

Professional Applications & Engineering Value

This alloy steel shoulder screw is engineered to address critical alignment and stability challenges in high-stress industrial applications. The combination of Class 3A UNC coarse threads and a precisely machined shoulder ensures reliable positioning in machinery, automation systems, and precision equipment. The black oxide finish enhances corrosion resistance, extending service life in harsh environments, while the knurled head and low-profile socket design prevent tool slippage during installation. With a 140,000 psi tensile strength, this fastener maintains integrity under heavy loads, making it ideal for applications requiring secure fastening and repeatable alignment, such as in conveyor systems, robotic arms, and assembly jigs.

Specification Summary & Compliance

This shoulder screw adheres to Class 3A thread fit for superior engagement and features a shoulder diameter tolerance of -0.004" to -0.002" and shoulder length tolerance of -0.005" to 0.005" for precise alignment. Manufactured to UNC coarse thread standards with a 3/8"-16 thread size, it ensures compatibility with standard components. The product is fully RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, meeting stringent environmental and safety regulations for industrial use.