S-94361A361 3/8"-24 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced Durability & Corrosion Resistance: Black oxide finish provides reliable protection against rust, extending service life in demanding industrial environments.
• Superior Tensile Strength for Heavy-Duty Use: Made from alloy steel with a tensile strength of 140,000 psi, ensuring high load-bearing capacity and resistance to failure.
• Precision Thread Fit for Secure Fastening: Class 3A UNF fine threads offer tighter tolerances, reducing the risk of loosening under vibration and improving assembly reliability.
• Accurate Shoulder for Stable Alignment: 1/2" shoulder diameter with tight tolerances ensures precise component positioning, minimizing misalignment in machinery and fixtures.
• Easy Installation with Knurled Grip: Knurled socket head and 1/4" hex drive allow for quick, tool-friendly installation and removal, boosting efficiency in maintenance and assembly.
• Hardened Material for Wear Resistance: Rockwell C32 hardness enhances surface durability, reducing wear in high-friction applications and prolonging fastener life.
• Compliance with Global Standards: Meets RoHS 3 and REACH regulations, ensuring safe, environmentally responsible use in international markets.

Professional Applications & Engineering Value

This alloy steel shoulder screw is engineered to address common industrial challenges such as component misalignment and vibration-induced loosening. The 3/8"-24 UNF fine thread with Class 3A fit ensures a secure, precise connection in applications like rotating machinery, jigs, and fixtures, where stability is critical. The black oxide finish adds a layer of corrosion resistance, making it suitable for humid or abrasive environments. With a 1/2" shoulder diameter and controlled tolerances, it provides reliable alignment for bearings, pulleys, and other moving parts, reducing downtime and maintenance costs. Ideal for precision shoulder screw uses in automotive, aerospace, and manufacturing sectors, this fastener combines strength with compliance to support efficient, long-term operations.

Specification Summary & Compliance

This shoulder screw features a Class 3A thread fit for high precision, adhering to UNF standards with fine thread spacing. Dimensions include a shoulder diameter of 1/2" (tolerance: -0.004" to -0.002") and shoulder length of 1 5/8" (tolerance: -0.005" to 0.005"), ensuring consistent performance. It is manufactured from alloy steel with a tensile strength of 140,000 psi and Rockwell C32 hardness. Compliant with RoHS 3 (2015/863/EU) under exemption 6(a) and REACH (EC 1907/2006), it meets environmental and safety regulations for industrial use.