S-94361A136 5/16"-24 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 140,000 psi ensures reliable performance in high-stress industrial applications, reducing the risk of fastener failure.
• Superior corrosion resistance provided by the black oxide finish extends service life in harsh environments, minimizing maintenance needs.
• Precision Class 3A thread fit with UNF fine threads offers secure, vibration-resistant connections for critical assemblies.
• Knurled socket head with hex drive allows for easy installation and removal, even in tight spaces, improving assembly efficiency.
• Accurate shoulder dimensions with controlled tolerances ensure consistent alignment and spacing in machinery and fixtures.
• High hardness (Rockwell C32) enhances wear resistance, maintaining dimensional stability under repeated use.
• Compliance with RoHS 3 and REACH ensures environmental safety and meets global regulatory standards for industrial components.

Professional Applications & Engineering Value

This alloy steel shoulder screw is engineered to address common challenges in precision machinery, such as misalignment and component wear. The 5/16"-24 UNF fine thread and Class 3A fit provide tight, secure fastening that resists loosening under vibration, ideal for rotating assemblies and automated equipment. The black oxide finish not only adds a layer of corrosion protection but also reduces galling, extending the lifespan in demanding environments like manufacturing and automotive systems. With a robust shoulder diameter of 3/8" and precise length tolerances, it ensures accurate positioning of parts, reducing downtime and maintenance costs. These features make it a reliable choice for industrial applications requiring high strength and durability.

Specification Summary & Compliance

This shoulder screw adheres to UNF thread standards with a Class 3A thread fit for high precision. Key dimensions include a shoulder diameter of 3/8" (tolerance: -0.004" to -0.002") and shoulder length of 1" (tolerance: -0.005" to 0.005"), ensuring consistent performance. It is manufactured from alloy steel with a hardness of Rockwell C32 and tensile strength of 140,000 psi. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting safe and sustainable industrial use.