S-93939A715 4-40 x 9/32" Plastic Fillister Head Slotted Screws

Key Features & Benefits at a Glance

• Excellent corrosion resistance due to nylon plastic construction, ideal for humid or chemical environments without rust concerns
• Secure and reliable fastening with Class 2A thread fit ensuring consistent engagement and vibration resistance in assemblies
• Broad temperature tolerance from -40°F to 185°F, maintaining integrity in varied operating conditions
• Easy installation and adjustment with slotted drive design, allowing quick tool access and straightforward manual tightening
• Enhanced head clearance from the high, narrow fillister profile, fitting seamlessly in countersunk or restricted spaces
• Durable coarse UNC threading providing strong holding power and reduced cross-threading risk during assembly
• Environmentally compliant with RoHS 3 adherence, meeting strict regulatory standards for hazardous substance restrictions

Professional Applications & Engineering Value

This 4-40 UNC nylon plastic screw with a fillister head and slotted drive is engineered to address common industrial challenges such as corrosion, electrical insulation, and weight reduction. Made from durable nylon plastic, it resists moisture, chemicals, and galvanic corrosion, making it perfect for electronics, marine equipment, and food processing machinery where metal fasteners would degrade. The coarse thread and Class 2A fit ensure quick, reliable installation in plastics or soft materials, reducing assembly time and minimizing thread stripping. Its fully threaded design and temperature resistance from -40°F to 185°F provide stable performance in environments with thermal fluctuations, offering a lightweight yet robust alternative for applications requiring non-conductive, RoHS 3 compliant fasteners.

Specification Summary & Compliance

This screw adheres to UNC coarse thread standards with a Class 2A thread fit for precise dimensional accuracy and ease of assembly. It features a right-hand thread direction, fully threaded length of 9/32", and is manufactured in compliance with RoHS 3 (2015/863/EU), ensuring it meets environmental regulations for restricted substances. The product is designed for reliable performance in industrial settings without hardness ratings, focusing on durability and regulatory conformity.