S-94035A159 8-32 Shoulder Screws

Key Features & Benefits at a Glance

• Superior Corrosion Resistance: The 18-8 Stainless Steel construction with a passivated finish provides excellent protection against rust and degradation in harsh industrial environments.
• Exceptional Mechanical Strength: With a 70,000 psi tensile strength and Rockwell B55 hardness, this screw delivers reliable, high-load performance and resists deformation under stress.
• Precise Alignment and Location: The precise shoulder fit with controlled diameter and length tolerances ensures accurate component positioning and reduces assembly play.
• Optimized for High-Torque Assembly: The internal hex socket head allows for secure tool engagement, enabling high tightening torque without head stripping.
• Robust Thread Engagement: The 8-32 UNC coarse thread with a Class 2A fit facilitates faster assembly and provides strong holding power in a wide range of materials.
• Regulatory Compliance for Global Markets: Meets RoHS 3 and REACH compliance standards, ensuring the screw is free of hazardous substances and suitable for international supply chains.
• Durable, Smooth Head Profile: The smooth, standard socket head profile minimizes friction and potential damage to mating surfaces during installation.

Professional Applications & Engineering Value

This precision shoulder screw is engineered to solve critical alignment and pivot point challenges in industrial and mechanical assemblies. The 18-8 Stainless Steel material provides the necessary corrosion resistance for demanding environments, from food processing equipment to outdoor machinery. The defining 3/16" shoulder length with its precise tolerance acts as a dependable datum, ensuring components like gears, pulleys, and linkages are perfectly positioned without the need for additional spacers or bushings. This eliminates misalignment, reduces wear, and streamlines the mechanical assembly process. The combination of a hex socket head and UNC coarse threading allows for efficient installation and high clamp load, making it a robust fastening solution for high-vibration applications.

Specification Summary & Compliance

This shoulder screw adheres to critical dimensional and performance standards. The thread is manufactured to a Class 2A fit for consistent engagement, while the shoulder features a diameter tolerance of -0.001" to 0" and a length tolerance of 0" to +0.002" for precise fitment. It conforms to the UNC thread standard and is verified to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring environmental and safety regulations are met.