S-90337A469 1/4"-20 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced Durability & Corrosion Resistance – 18-8 Stainless Steel construction combined with TiCN coating provides superior wear resistance and long-lasting performance in demanding environments.
• Precise Shoulder Alignment – Engineered with a precise shoulder fit and tight tolerances (±0.002" on shoulder length) to ensure accurate component positioning and reduced assembly vibration.
• High Strength for Demanding Applications – Offers a tensile strength of 70,000 psi and Rockwell B55 hardness, providing reliable performance under high-stress conditions.
• Low Profile Socket Head Design – Allows for installation in confined spaces while the hex drive (5/32") ensures secure, slip-resistant torque application.
• Standardized Thread Compatibility – UNC coarse thread (1/4"-20) with Class 2A fit ensures easy assembly and interchangeability with standard components.
• Compliance with Environmental Regulations – Meets RoHS 3 and REACH compliance, making it suitable for use in regulated industries and export markets.
• Right-Hand Thread for Universal Use – Facilitates straightforward installation and removal in common industrial machinery and equipment.

Professional Applications & Engineering Value

This precision shoulder screw is engineered to address critical alignment and wear challenges in industrial assemblies. The 18-8 Stainless Steel base material offers excellent corrosion resistance, while the TiCN coating significantly enhances surface hardness and reduces friction, extending service life in high-cycle applications. The low profile socket head and hex drive design allow for efficient installation in tight spaces, minimizing protrusion and improving safety. With a precise shoulder diameter and length, it ensures accurate positioning of moving parts—such as in pivots, gears, and linkages—reducing misalignment and premature wear. Ideal for use in machinery, automation systems, and precision instruments, this screw provides reliable performance where dimensional stability and durability are paramount.

Specification Summary & Compliance

The screw features a 1/4"-20 UNC coarse thread with Class 2A thread fit for consistent engagement and ease of assembly. Shoulder dimensions include a diameter of 5/16" with a tolerance of -0.001" to 0", and a length of 1/2" with a tolerance of 0" to 0.002" for precise fit. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets environmental and safety standards for industrial and international use.