S-94361A339 5/16"-24 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 140,000 psi ensures reliable performance under high-stress industrial conditions, reducing the risk of fastener failure.
• Class 3A thread fit provides superior precision and tighter tolerances for secure, vibration-resistant assemblies in demanding applications.
• Black oxide finish offers enhanced corrosion resistance and a durable, non-reflective surface ideal for machinery and equipment.
• Knurled socket head with hex drive allows for easy installation and removal, even in confined spaces, improving assembly efficiency.
• Fine UNF thread spacing delivers improved clamping force and better resistance to loosening in dynamic or high-vibration environments.
• Alloy steel construction with Rockwell C32 hardness combines strength and wear resistance for long service life in repetitive or heavy-duty use.
• Compliance with RoHS 3 and REACH regulations ensures environmental safety and meets global standards for industrial components.

Professional Applications & Engineering Value

This alloy steel shoulder screw is engineered to address common industrial challenges such as misalignment, component wear, and vibration-induced loosening. The precision shoulder diameter and standard shoulder fit provide accurate positioning and alignment in assemblies, reducing stress on connected parts. The black oxide finish not only resists corrosion but also minimizes galling during installation. With its fine UNF thread and Class 3A tolerance, it ensures a secure fit in applications like machinery, automotive systems, and precision instruments, where reliability and durability are critical. The knurled socket head enhances grip for efficient maintenance, making it a versatile choice for industrial fastening solutions that demand both strength and precision.

Specification Summary & Compliance

This shoulder screw features a 5/16"-24 UNF fine thread with Class 3A fit for high precision, along with a shoulder diameter of 3/8" and standard shoulder fit tolerances. It is manufactured from alloy steel with a hardness of Rockwell C32 and tensile strength of 140,000 psi. The product complies with RoHS 3 (2015/863/EU) under exemption 6(a) and is REACH (EC 1907/2006) compliant, meeting essential environmental and safety standards for industrial use.