S-99477A127 3/8"-16 x 3/4" ASME B18.3, UL 94 HB Plastic Socket Head Screws

Key Features & Benefits at a Glance

• Superior chemical resistance thanks to polypropylene construction, ideal for harsh industrial environments
• Reliable 4500 psi tensile strength provides secure fastening for medium-duty plastic assembly applications
• Wide temperature tolerance (-20° to 180°F) ensures consistent performance across various operating conditions
• Precision Class 2A thread fit with 3/8"-16 UNC coarse threads enables quick installation and vibration resistance
• Standard hex socket drive (5/16") allows for high-torque application with common Allen wrenches
• Full compliance with ASME B18.3 specifications guarantees dimensional accuracy and interchangeability
• Environmentally safe composition meeting RoHS 3 and REACH regulations for sustainable manufacturing

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these polypropylene socket head cap screws solve critical challenges in chemical processing, food equipment, and electrical enclosures where metal corrosion is a concern. The 3/8"-16 UNC coarse thread design provides excellent engagement in plastic materials while resisting loosening under vibration. With their off-white color and chemical-resistant properties, these fasteners maintain integrity when exposed to solvents, acids, and cleaning agents. The standard hex drive system enables efficient installation in confined spaces, making them ideal for assembly lines requiring repeated maintenance access. These components deliver reliable performance while eliminating galvanic corrosion issues in multi-material assemblies.

Specification Summary & Compliance

This socket head cap screw features precise Class 2A thread fit with 3/8"-16 UNC coarse threads and complies with ASME B18.3 dimensional standards. The fastener maintains full regulatory compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental directives. Manufactured from polypropylene plastic with a 3/4" length and 9/16" head diameter, this component delivers consistent performance within specified tolerances for industrial applications requiring non-metallic fastening solutions.