S-97345A277 3-48 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments and extended service life.
• High-strength performance offering 70,000 psi tensile strength and 35,000 psi minimum shear strength for demanding mechanical applications.
• Precise Class 3A thread fit ensures reliable, vibration-resistant assemblies with consistent engagement.
• Easy installation and removal facilitated by the 5/64" hex socket drive and knurled head for improved grip.
• Accurate component alignment with a 1/8" diameter shoulder and 3/4" length, maintaining part positioning under load.
• Broad industrial compliance meeting RoHS 3 and REACH standards for safe, regulated use in global markets.
• Durable coarse UNC threading provides robust fastening and resistance to stripping in high-stress scenarios.

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw is engineered to address critical challenges in precision assemblies, such as maintaining alignment in rotating machinery and supporting loads in automated equipment. The Class 3A thread fit and coarse 3-48 UNC threading deliver secure, repeatable fastening that resists loosening under vibration, while the knurled head and hex socket drive enable quick, tool-friendly installation in confined spaces. Its high tensile strength and corrosion-resistant material make it suitable for demanding sectors like aerospace, medical devices, and marine applications, where reliability and compliance with RoHS and REACH are paramount for long-term performance.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 3A fit for precise dimensional accuracy, including a shoulder diameter of 1/8" (tolerance: -0.004" to -0.002") and shoulder length of 3/4" (tolerance: -0.005" to 0.005"). Manufactured to high hardness (Rockwell B79) and strength specifications, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity for industrial use.