S-92012A305 1/4"-20 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced Durability & Corrosion Resistance - Black oxide finish protects against rust and wear in harsh industrial environments, extending service life.
• High Tensile Strength for Demanding Applications - 140,000 psi tensile strength ensures reliable performance under heavy loads and stress.
• Precise Shoulder Fit for Accurate Alignment - Tight tolerances on shoulder diameter and length provide stable positioning for rotating components.
• Easy Installation with Hex Socket Drive - 5/32" hex drive allows for secure, high-torque installation without stripping.
• Consistent Thread Performance - Class 2A UNC coarse thread ensures easy assembly and reliable fastening in high-vibration settings.
• Robust Material Hardness - Rockwell C32 hardness offers excellent wear resistance and maintains thread integrity.
• Compliance with Environmental Standards - RoHS 3 and REACH compliant for safe use in regulated industries.

Professional Applications & Engineering Value

This shoulder screw is engineered to address critical alignment and rotational stability challenges in machinery assembly. The alloy steel construction, combined with a black oxide finish, provides superior corrosion resistance, making it ideal for automotive, aerospace, and manufacturing equipment where exposure to moisture and chemicals is common. The precise shoulder dimensions (5/16" diameter, 5/8" length) ensure accurate component positioning, reducing wear and misalignment in pivots, gears, and linkages. With a UNC coarse thread and Class 2A fit, it facilitates quick installation and reliable performance in high-vibration environments, minimizing downtime and maintenance costs. The socket head design with a 5/32" hex drive allows for efficient torque application in confined spaces, enhancing assembly efficiency.

Specification Summary & Compliance

This shoulder screw features a 1/4"-20 UNC coarse thread with Class 2A fit for standard tolerance and easy assembly. Shoulder dimensions include a diameter of 5/16" (tolerance: -0.001" to 0") and length of 5/8" (tolerance: 0" to 0.002") for precise fit. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety. Manufactured to meet industrial standards for material hardness (Rockwell C32) and tensile strength (140,000 psi).