S-94690A721 4-40 x 1/2" Plastic Binding Head Slotted Screws

Key Features & Benefits at a Glance

• Non-conductive and corrosion-resistant nylon construction ensures reliable performance in electrical applications and harsh environments without risk of short circuits or rust.
• Wide rounded binding head design provides superior holding power and prevents pull-through in softer materials, enhancing assembly integrity.
• Class 2A thread fit with 4-40 UNC coarse threading offers easy installation and secure fastening in plastics and soft substrates, reducing cross-threading risks.
• Temperature resistance from -40°F to 185°F maintains structural stability and performance across diverse operating conditions.
• Slotted drive style allows for quick, tool-friendly installation with standard screwdrivers, streamlining assembly processes.
• RoHS 3 compliance ensures environmental safety and meets regulatory standards for global manufacturing and electronics projects.
• Fully threaded 1/2" length delivers maximum grip and adjustment flexibility in binding and clamping applications.

Professional Applications & Engineering Value

Engineered for precision, this nylon plastic rounded head screw with 4-40 UNC coarse threads addresses critical needs in electronics, automotive, and consumer goods assembly. The non-metallic material eliminates galvanic corrosion and electrical conductivity risks, making it ideal for insulating components and sensitive devices. Its wide binding head distributes clamping force evenly, preventing damage to soft materials like plastics or circuit boards. With a temperature range of -40°F to 185°F, it performs reliably in both freezing and moderately heated environments, while the slotted drive ensures compatibility with standard tools for efficient maintenance. Fully compliant with RoHS 3 regulations, it supports sustainable manufacturing without compromising on Class 2A thread accuracy for consistent, vibration-resistant fastening.

Specification Summary & Compliance

This screw adheres to inch system measurements with a 1/2" length, 0.235" head diameter, and 4-40 UNC coarse threads meeting Class 2A thread fit tolerances for precise engagement. It is manufactured with fully threaded right-hand threading and complies with RoHS 3 (2015/863/EU) environmental standards, ensuring lead-free and hazardous substance-free composition for global applications.