S-91327A114 10-24 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Secure Vibration Resistance: Integrated nylon patch thread locker prevents loosening under dynamic loads, maintaining assembly integrity in demanding environments.
• Superior Corrosion Resistance: Made from 18-8 Stainless Steel with a passivated finish for excellent durability against rust and chemical exposure.
• High-Strength Performance: Offers a 70,000 psi tensile strength and Rockwell B55 hardness for reliable load-bearing in heavy-duty applications.
• Precision Alignment & Pivoting: The 1/4" shoulder diameter with tight tolerances ensures accurate component positioning and smooth rotational movement.
• Easy Installation & Removal: Hex drive (1/8") and knurled head provide superior grip and torque application, reducing installation time.
• Wide Temperature Compatibility: Nylon locker functions from -50° to 250° F, suitable for varied operational climates without performance loss.
• Interchangeable & Standardized Fit: Class 3A thread fit and UNC coarse threads ensure consistent, secure fastening with standard components.

Professional Applications & Engineering Value

This 10-24 UNC shoulder screw is engineered to address critical challenges in precision machinery and industrial assemblies. The 18-8 Stainless Steel construction, enhanced by a passivated finish, provides exceptional resistance to corrosion and wear, making it ideal for harsh environments like automotive, aerospace, and food processing equipment. The nylon patch thread locking feature effectively counters vibration-induced loosening, a common failure point in dynamic systems, ensuring long-term reliability. With a 3/8" thread length and 1/4" shoulder diameter, it facilitates exact alignment in pivoting joints, bearing mounts, and linkages, reducing misalignment and wear. The hex drive and knurled head allow for quick, secure installation, streamlining maintenance and assembly processes in high-volume production settings.

Specification Summary & Compliance

This shoulder screw adheres to ASME B18.3 specifications, ensuring dimensional accuracy and performance reliability. It features a Class 3A thread fit for precise engagement and UNC coarse threads for robust fastening. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing it is free from hazardous substances and safe for industrial use. Shoulder diameter tolerance is -0.004" to -0.002", and shoulder length tolerance is -0.005" to 0.005", confirming high manufacturing consistency.