S-94115A105 4-40 x 3/16" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Secure, non-marring fastening with green nylon 6/6 plastic tip that prevents surface damage and maintains component integrity
• Exceptional holding power achieved through Class 3A thread fit, ensuring tight tolerances and reliable performance in demanding applications
• Superior corrosion resistance provided by black-oxide coating on alloy steel, extending service life in various industrial environments
• Easy installation and removal with hex drive design, allowing for efficient assembly and maintenance operations
• Wide temperature compatibility with nylon tip rated from -50° to 250°F, suitable for diverse operating conditions
• Precision-engineered dimensions including 3/16" length and 4-40 UNC coarse threads, delivering consistent performance across applications
• Headless design advantage enabling flush mounting in confined spaces while maintaining maximum thread engagement

Professional Applications & Engineering Value

This 4-40 UNC set screw with nylon 6/6 plastic tip solves critical engineering challenges in precision assembly applications. The black-oxide alloy steel construction provides excellent durability while the Class 3A thread fit ensures superior vibration resistance and positional accuracy. The headless design with hex drive allows for compact installations in machinery, electronics, and automotive components where space is limited. The green nylon tip eliminates the need for separate locking elements while protecting sensitive surfaces from damage during repeated adjustments. Ideal for securing collars, knobs, and precision components in manufacturing equipment, this set screw delivers reliable performance without compromising surface finish or alignment accuracy.

Specification Summary & Compliance

Manufactured to exacting ASME B18.3 standards with Class 3A thread fit precision for superior dimensional accuracy. Features 4-40 UNC coarse threads with right-hand direction and hex drive compatibility. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets. The combination of alloy steel construction with black-oxide surface treatment provides optimal corrosion resistance while maintaining the mechanical properties required for demanding fastening applications.