S-91273A682 1/2"-13 Shoulder Screws

Key Features & Benefits at a Glance

• Corrosion-resistant 18-8 stainless steel construction ensures long-term reliability in harsh industrial environments, reducing maintenance costs.
• Black oxide finish enhances wear resistance and provides a sleek, low-reflective surface ideal for precision assemblies.
• 6" shoulder length with precise tolerances allows for accurate component alignment and smooth rotational movement in machinery.
• 70,000 psi tensile strength and 35,000 psi shear strength deliver robust load-bearing capacity for heavy-duty applications.
• Class 2A thread fit and UNC coarse threading enable quick assembly and secure fastening in high-vibration settings.
• Knurled socket head with hex drive offers superior grip and torque transmission during installation, minimizing slippage.
• RoHS 3 and REACH compliance guarantees environmental safety and regulatory adherence for global industrial use.

Professional Applications & Engineering Value

This heavy-duty shoulder screw is engineered to address common challenges in precision machinery, such as misalignment and component wear. The 18-8 stainless steel material, combined with a black oxide finish, provides excellent corrosion and abrasion resistance, extending service life in demanding conditions like automotive assemblies or conveyor systems. The 6" shoulder length with tight tolerances ensures accurate pivoting and spacing, reducing friction and downtime. Its UNC coarse thread and Class 2A fit facilitate rapid installation in high-volume production, while the knurled socket head allows for efficient torque application. Ideal for use in pivots, bearings, and rotating mechanisms, this screw enhances operational efficiency and reliability in industrial applications.

Specification Summary & Compliance

This shoulder screw features a 1/2"-13 UNC coarse thread with Class 2A thread fit for precise engagement, and a shoulder diameter tolerance of -0.004" to -0.002" and length tolerance of -0.005" to 0.005" to ensure dimensional accuracy. Manufactured from 18-8 stainless steel with a black oxide finish, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards, supporting safe and sustainable industrial use.