S-93985A403 5/16"-18 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced Durability & Corrosion Resistance: Made from 416 Stainless Steel with Rockwell C26 hardness, offering superior wear resistance and longevity in demanding environments.
• High Tensile Strength for Secure Fastening: With a 120,000 psi tensile strength, this shoulder screw ensures reliable performance under high-stress conditions, reducing the risk of failure.
• Precise Alignment & Reduced Wear: Features a precise shoulder fit with tight tolerances (e.g., shoulder diameter tolerance of -0.001" to 0"), minimizing misalignment and extending component life.
• Easy Installation & Removal: Equipped with a 3/16" hex socket drive for quick, tool-friendly assembly and disassembly, saving time in maintenance and production.
• Versatile Coarse Thread Design: 5/16"-18 UNC coarse threads provide excellent grip and faster installation in various materials, ideal for repetitive industrial use.
• Compliance with Environmental Standards: RoHS 3 and REACH compliant, ensuring safe, eco-friendly use in global markets without hazardous substances.
• Consistent Performance in Machinery: The 1/2" shoulder length and standard socket head profile enable stable rotational control in assemblies like pivots and guides.

Professional Applications & Engineering Value

This precision shoulder screw is engineered to address common industrial challenges, such as component misalignment and premature wear in machinery. Constructed from 416 Stainless Steel, it resists corrosion and maintains integrity in harsh conditions, while the UNC coarse thread and hex socket head facilitate efficient installation in high-volume production lines. The precise shoulder diameter and length tolerances ensure accurate positioning in applications like rotating shafts, linkages, and assembly jigs, reducing vibration and improving operational reliability. Ideal for industrial fasteners in automotive, aerospace, and manufacturing sectors, it delivers consistent performance where high tensile strength and dimensional stability are critical.

Specification Summary & Compliance

This shoulder screw adheres to Class 2A thread fit for standard clearance and ease of assembly, with shoulder dimensions including a diameter of 3/8" and length of 1/2" within tight tolerances. It conforms to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring compliance with environmental and safety standards for industrial use.