S-93339A249 M4 x 16 mm Set Screws

Key Features & Benefits at a Glance

• Superior holding power with coarse 0.7mm pitch threading for faster installation and reduced risk of cross-threading in industrial assemblies.
• Exceptional material durability from alloy steel hardened to Rockwell C39, providing excellent resistance to wear and deformation under load.
• Precise thread engagement with Class 6g fit ensures reliable fastening and consistent performance in high-vibration applications.
• Secure, flush mounting thanks to the headless design and 2mm hex drive, ideal for space-constrained environments.
• Enhanced component contact from the 2.5mm ball tip, distributing pressure evenly and minimizing damage to secured parts.
• Broad industrial compliance with RoHS 3 regulations, making it suitable for use in regulated environments and global supply chains.
• Optimized for right-hand thread applications in machinery, automotive, and equipment manufacturing where standard directional fastening is required.

Professional Applications & Engineering Value

This M4 set screw is engineered to address common challenges in precision machinery and automated systems, where vibration resistance and reliable clamping force are critical. The alloy steel construction, combined with a Rockwell C39 hardness, prevents stripping and maintains thread integrity under repetitive stress. The ball tip design minimizes point loading on shafts and gears, reducing wear and preserving alignment in power transmission components. With its coarse metric thread and Class 6g tolerance, it ensures quick assembly and consistent performance in industrial fastening applications, from motor mounts to conveyor systems, enhancing operational uptime and reducing maintenance intervals.

Specification Summary & Compliance

This set screw adheres to metric thread standards with M4 x 0.7mm coarse pitch and Class 6g thread fit for precise dimensional accuracy. It is manufactured from alloy steel and meets RoHS 3 (2015/863/EU) compliance under exemption 6(a) for lead as an alloying element in steel, ensuring suitability for regulated industrial and electronic applications. The right-hand thread and hex drive design conform to common assembly practices, providing reliable performance in automated and manual fastening operations.