S-91273A811 M6 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced Durability & Corrosion Resistance: Crafted from 18-8 stainless steel with a black oxide finish for superior protection against rust and wear in harsh industrial environments.
• Precise Alignment & Component Spacing: Features a consistent 30mm shoulder length with minimal tolerance, ensuring accurate positioning and smooth rotation of assembled parts.
• High-Strength Fastening for Demanding Applications: Delivers a robust 70,000 psi tensile strength and 35,000 psi shear strength, providing reliable performance under significant mechanical stress.
• Secure & Efficient Installation: Equipped with a 3 mm hex drive and knurled head for improved grip and torque application, reducing the risk of tool slippage during assembly.
• Accurate Thread Engagement & Interchangeability: Utilizes a Class 5g6g thread fit on an M6x1mm coarse thread, ensuring compatibility with standard metric components and reducing cross-threading risks.
• Consistent Hardness for Long-Term Reliability: Maintains a Rockwell B55 hardness, offering excellent resistance to deformation and ensuring the screw retains its integrity over repeated use.
• Compliance with Global Environmental Standards: Fully compliant with RoHS 3 and REACH regulations, making it a safe and responsible choice for various international markets.

Professional Applications & Engineering Value

This M6 shoulder screw is engineered to address common challenges in precision assembly, such as misalignment and component wear. The 30mm shoulder length provides a precise bearing surface for rotating parts like gears, pulleys, and linkages, minimizing friction and ensuring smooth operation. Made from 18-8 stainless steel, it offers excellent corrosion resistance, which is critical in moist or chemically aggressive environments, while the black oxide finish adds an extra layer of protection and reduces galling. The hex drive and knurled head design facilitate secure installation in tight spaces, common in machinery, automotive, and electronics applications. With its high tensile and shear strength, this shoulder bolt reliably handles dynamic loads, making it ideal for demanding industrial uses where failure is not an option.

Specification Summary & Compliance

This shoulder screw features an M6x1mm coarse thread with a Class 5g6g thread fit, ensuring precise dimensional accuracy and interchangeability per metric standards. The shoulder diameter tolerance is -0.04 to -0.01 mm, and the shoulder length tolerance is 0 to 0.25 mm, providing tight control for engineering applications. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for industrial components.