S-91273A793 M5 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced Corrosion Resistance with 18-8 stainless steel and black oxide finish for reliable performance in harsh industrial environments.
• Superior Torque Transmission from the knurled hex socket head design, ensuring secure tool engagement and reduced slippage during installation.
• High Tensile and Shear Strength rated at 70,000 PSI and 35,000 PSI respectively, providing dependable load-bearing capacity for demanding applications.
• Precision Thread Fit with Class 5g6g tolerance, ensuring consistent mating and reduced risk of cross-threading in assembly operations.
• Durable Hardness of Rockwell B55, offering excellent wear resistance and longevity under repetitive mechanical stress.
• Accurate Shoulder Dimensions with tight diameter and length tolerances, enabling precise alignment and spacing in machinery components.
• Compliance with Environmental Standards including RoHS 3 and REACH, making it suitable for global supply chains and regulated industries.

Professional Applications & Engineering Value

This M5 shoulder screw is engineered to address common challenges in precision assembly, such as misalignment and component wear. The 18-8 stainless steel construction, combined with a black oxide finish, provides robust corrosion resistance, ideal for automotive, electronics, and machinery sectors where exposure to moisture or chemicals is a concern. The knurled socket head enhances grip for high-torque applications, reducing installation time and tool damage. With a coarse thread pitch of 0.8mm and a shoulder length of 8mm, it ensures secure fastening and accurate positioning in rotating parts, bushings, or linkages, minimizing maintenance downtime and improving operational efficiency.

Specification Summary & Compliance

This shoulder screw adheres to metric system standards with an M5x0.8 thread size and Class 5g6g thread fit for precise tolerance. The shoulder diameter tolerance is -0.04 to -0.01 mm, and shoulder length tolerance is 0 to 0.25 mm, ensuring consistent performance. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally responsible manufacturing and use in industrial applications.