S-94564A277 4-40 x 1 3/8" Set Screws

Key Features & Benefits at a Glance

• Non-conductive and corrosion-resistant nylon plastic construction ensures reliable performance in electrical or chemical environments without risk of galvanic corrosion.
• Flush, headless design allows for seamless integration in assemblies where protruding fastener heads are undesirable, maintaining a clean profile.
• Hex drive (3/64") provides secure tool engagement for precise installation and removal, reducing the risk of stripping compared to slotted drives.
• 4-40 UNC coarse thread with Class 2A fit offers quick assembly and reliable holding power in softer materials like plastics or wood.
• Wide temperature tolerance (-40° to 185°F) ensures consistent performance in both low-temperature and moderate-heat applications without degrading.
• Flat tip design distributes clamping force evenly, minimizing damage to shaft surfaces while providing secure positioning.
• RoHS 3 compliance guarantees environmental safety and meets international regulatory standards for hazardous substance restrictions.

Professional Applications & Engineering Value

This nylon plastic set screw is engineered to address common industrial challenges such as component slippage, electrical isolation, and corrosion in sensitive assemblies. The 4-40 UNC coarse thread ensures rapid installation in thermoplastic or composite materials, while the headless, hex drive design allows for flush mounting in tight spaces—ideal for electronics enclosures, automotive trim, and consumer goods where aesthetics and space optimization are critical. Its off-white color and non-magnetic properties make it suitable for medical devices or food processing equipment, providing a lightweight, durable alternative to metal fasteners without sacrificing temperature resistance from -40° to 185°F.

Specification Summary & Compliance

This set screw adheres to UNC coarse thread standards with a Class 2A thread fit for consistent dimensional accuracy and ease of assembly. It meets RoHS 3 (2015/863/EU) compliance, ensuring it is free from restricted hazardous substances. The right-hand thread direction and flat tip are manufactured to precise specifications for reliable performance in industrial fastening applications.