S-91054A504 3/8"-16 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced Durability & Wear Resistance: TiCN coating provides superior surface hardness and reduces friction, extending service life in high-cycle applications.
• Corrosion & Chemical Resistance: 18-8 Stainless Steel construction offers excellent resistance to rust and oxidation, ideal for harsh industrial environments.
• High Tensile Strength for Demanding Loads: With a tensile strength of 70,000 psi, this screw reliably handles heavy-duty mechanical stresses without failure.
• Precise Alignment & Smooth Rotation: The precisely machined 1/2" shoulder diameter with tight tolerances ensures accurate component positioning and reduces bearing wear.
• Secure & Reliable Fastening: Class 2A UNC coarse threads ensure consistent engagement and vibration resistance in dynamic assemblies.
• Easy Installation with Standard Tools: Hex socket (1/4" drive) allows for straightforward installation and removal using common industrial tools.
• Compliance with Environmental Standards: Meets RoHS 3 and REACH regulations, ensuring safety and suitability for global industrial markets.

Professional Applications & Engineering Value

This 3/8"-16 UNC shoulder screw is engineered for precision alignment and rotational applications in machinery, automation, and assembly fixtures. The 1/2" shoulder diameter with tight tolerances (±0.002") provides a precise pivot or locating surface, minimizing play and misalignment in moving parts. Manufactured from 18-8 Stainless Steel, it resists corrosion in moist or chemically aggressive settings, while the TiCN coating significantly enhances surface hardness and abrasion resistance, reducing maintenance frequency. The Class 2A thread fit and coarse UNC thread facilitate quick assembly and secure holding power, making it ideal for use in conveyor systems, robotic arms, and precision instruments where reliability and dimensional accuracy are critical.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 2A thread fit for consistent engagement. The shoulder features precise diameter and length tolerances (diameter: -0.002" to 0", length: 0" to 0.003") to ensure accurate assembly. Material properties include a tensile strength of 70,000 psi and a hardness of Rockwell B55. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for industrial applications with environmental and safety requirements.