S-92012A301 1/4"-20 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional strength and durability with 140,000 psi tensile strength and Rockwell C32 hardness, ensuring reliable performance in high-stress industrial applications.
• Precise shoulder fit for accurate alignment with a 5/16" diameter and 1/4" length tolerance, reducing assembly errors and improving machinery stability.
• Corrosion-resistant black oxide finish extends service life by protecting against rust and wear in harsh environments.
• Easy installation and removal thanks to the hex socket head and 5/32" drive size, allowing for efficient tool engagement and reduced downtime.
• Standardized UNC coarse threads with Class 2A fit ensure consistent compatibility and secure fastening in various machinery and equipment.
• Compliance with RoHS 3 and REACH regulations guarantees environmental safety and meets international standards for industrial components.
• Smooth head texture and standard socket profile minimize surface damage and provide a clean, professional appearance in assembled products.

Professional Applications & Engineering Value

This 1/4"-20 UNC shoulder screw is engineered to address common industrial challenges such as misalignment and component wear. Made from high-strength alloy steel and finished with a protective black oxide coating, it resists corrosion and maintains integrity under heavy loads. The precise shoulder diameter and length tolerances ensure exact positioning in assemblies, reducing vibration and enhancing the lifespan of machinery parts like pivots, gears, and linkages. Ideal for industrial automation, precision equipment, and machinery assemblies, this screw provides reliable performance where exact fit and durability are critical, supported by a hex drive design for easy maintenance and consistent torque application.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 2A thread fit for consistent engagement and tolerance. Dimensions include a 1/4"-20 thread size, 5/16" shoulder diameter with -0.001" to 0" tolerance, and 1/4" shoulder length with 0" to 0.002" tolerance, ensuring precise manufacturing. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious and regulated industrial applications.