S-98256A103 4-40 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance from Grade 2 Titanium, ideal for harsh environments and reducing maintenance costs
• High tensile strength of 40,000 psi ensures reliable performance under heavy loads and mechanical stress
• Precise Class 3A thread fit guarantees secure fastening with minimal risk of loosening in vibration-prone applications
• Knurled socket head with 5/64" hex drive provides superior grip and easy installation with standard tools
• Accurate 1/8" shoulder diameter enables stable component alignment and positioning in assemblies
• RoHS 3 and REACH compliance meets international environmental standards for safe, sustainable use
• Rockwell B80 hardness offers excellent durability and wear resistance for long service life

Professional Applications & Engineering Value

This Grade 2 Titanium shoulder screw with 4-40 UNC coarse threads and socket head design addresses critical engineering challenges in industries like aerospace, medical devices, and precision machinery. The titanium material provides outstanding corrosion resistance, eliminating failures in humid or chemically aggressive settings. Its 1/4" shoulder length and 1/8" shoulder diameter ensure exact component spacing and rotational stability, reducing assembly errors. The Class 3A thread fit and right-hand thread direction enhance fastening reliability, while the knurled head texture improves handling during installation. Ideal for applications requiring lightweight, high-strength fasteners with precise positioning capabilities.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 3A thread fit for tight tolerances. Dimensions include a 5/32" thread length, 1/4" shoulder length (tolerance: -0.005" to 0.005"), and 1/8" shoulder diameter (tolerance: -0.004" to -0.002"). It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental safety and regulatory adherence for industrial use.