S-92981A948 M1.6 ASTM A108 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced Durability & Corrosion Resistance: Black oxide finish on alloy steel provides superior protection against rust and wear in harsh industrial environments, extending service life.
• Precise Shoulder Fit for Accurate Alignment: Tight shoulder diameter tolerance of -0.072 to -0.01 mm ensures exact component positioning, reducing assembly errors and improving machine performance.
• High Strength & Reliable Fastening: Made from alloy steel with Rockwell C32 hardness, offering excellent tensile strength and resistance to deformation under load.
• Easy Installation with Hex Drive: 1.5 mm hex socket drive allows for secure, high-torque installation using standard tools, speeding up assembly and maintenance.
• Coarse Thread for Quick Assembly: M1.6 x 0.35 mm coarse pitch threads enable faster installation and better grip in various materials, ideal for high-volume production lines.
• Compliance with Industry Standards: Meets ASTM A108 specifications, ensuring consistent quality and reliability for engineering applications.
• Environmental & Safety Compliance: RoHS 3 and REACH compliant, making it safe for use in regulated industries and supporting sustainable manufacturing practices.

Professional Applications & Engineering Value

This M1.6 shoulder screw is engineered from alloy steel with a black oxide finish to address common industrial challenges such as misalignment, corrosion, and mechanical failure. The precise 16mm shoulder length and controlled diameter tolerance provide a stable pivot or spacer in assemblies, reducing vibration and wear in precision machinery, electronics, and automotive components. Its Class 5g6g thread fit and coarse pitch ensure secure fastening in dynamic environments, while the hex drive simplifies maintenance. Ideal for applications requiring reliable shoulder fit, it enhances operational efficiency and longevity in industrial shoulder bolt uses.

Specification Summary & Compliance

The screw features a metric thread with Class 5g6g fit for precise tolerance, a shoulder diameter of 2 mm with tolerance from -0.072 to -0.01 mm, and shoulder length of 16 mm with tolerance 0 to 0.25 mm. It complies with ASTM A108 manufacturing standards and is certified RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring environmental safety and regulatory adherence.