S-99477A440 10-32 x 1/2" Plastic Socket Head Screws

Key Features & Benefits at a Glance

• Corrosion-resistant polypropylene construction ensures reliable performance in chemical and moisture-rich industrial environments without rust or degradation.
• Precision Class 2A thread fit guarantees smooth assembly and secure fastening with minimal risk of cross-threading in fine-thread applications.
• Wide temperature tolerance from -20° to 210°F maintains structural integrity and dimensional stability across diverse operating conditions.
• 5/32" hex socket drive design enables high-torque installation with standard tools while preventing cam-out and head stripping.
• Full-length threading provides consistent engagement depth and uniform clamping force along the entire fastener length.
• RoHS 3 and REACH compliance meets stringent international regulations for hazardous substance restrictions in manufacturing and electronics.
• Off-white color and plastic composition offers electrical insulation properties and aesthetic compatibility in consumer products and enclosures.

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these polypropylene socket head cap screws solve critical challenges in corrosive environments where metal fasteners would fail. The 10-32 UNF fine thread configuration delivers superior vibration resistance and precise adjustment capability in compact assemblies. With their Class 2A thread fit and hex socket drive, these fasteners ensure repeatable installation torque values while eliminating galvanic corrosion concerns in mixed-material designs. Ideal for electrical enclosures, food processing equipment, and laboratory instrumentation, the temperature-stable polypropylene maintains performance from freezer applications to moderate heat exposure, providing a durable, non-conductive alternative to traditional metal fasteners.

Specification Summary & Compliance

This socket head cap screw features 10-32 UNF fine threads with Class 2A tolerance for precision fit, manufactured to standard socket head dimensions with 5/32" hex drive and 1/2" length. The polypropylene material meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements, ensuring adherence to international environmental and safety standards for restricted substances. Right-hand thread direction and fully threaded design provide consistent mechanical performance across industrial applications.