S-94361A318 10-32 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional Strength & Durability: Alloy steel construction with 140,000 psi tensile strength and Rockwell C32 hardness ensures reliable performance under high-stress conditions.
• Precision Fit for Secure Assembly: Class 3A thread fit provides tight, secure fastening with minimal play, reducing the risk of loosening in critical applications.
• Corrosion-Resistant Protection: Black oxide finish offers enhanced resistance to rust and wear, extending service life in demanding industrial environments.
• Easy & Secure Installation: Hex socket drive and knurled head design allow for firm tool grip and straightforward installation, even in confined spaces.
• Accurate Alignment & Spacing: The 1/4" shoulder diameter with tight tolerances ensures precise component alignment and consistent spacing in assemblies.
• Fine Thread for Vibration Resistance: 10-32 UNF fine thread design helps maintain clamp load and resists loosening under dynamic or vibrating loads.
• Compliant with Global Standards: Meets RoHS 3 and REACH regulations, ensuring safe and environmentally responsible use in various industries.

Professional Applications & Engineering Value

This alloy steel shoulder screw is engineered to address common industrial challenges such as misalignment, vibration-induced loosening, and component wear. The 10-32 UNF fine thread and Class 3A fit provide a secure, high-precision connection that maintains integrity in dynamic applications like machinery, automotive assemblies, and precision instruments. The black oxide finish enhances corrosion resistance, reducing maintenance needs in humid or corrosive environments. With a robust 1/4" shoulder diameter and 1-1/8" shoulder length, it ensures accurate positioning of parts, minimizing wear and improving overall assembly reliability. The hex drive and knurled head facilitate easy installation, saving time and reducing the risk of tool slippage during tightening.

Specification Summary & Compliance

This shoulder screw adheres to UNF thread standards with a Class 3A fit for high precision. Shoulder diameter tolerance is -0.004" to -0.002", and shoulder length tolerance is -0.005" to 0.005", ensuring consistent performance. It is manufactured to meet RoHS 3 (2015/863/EU) with exemption 6(a) and REACH (EC 1907/2006) compliance, supporting use in regulated industrial applications.