S-91297A628 3/8"-16 x 1 1/2" Plastic Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional temperature resistance from -100°F to 500°F for reliable performance in extreme thermal environments
• Superior chemical inertness and corrosion resistance due to PTFE plastic construction, ideal for harsh chemical processing applications
• Secure external hex drive installation with standard 9/16" head width for easy torque application and removal
• Precision Class 2A thread fit with UNC coarse threading ensuring consistent engagement and vibration resistance
• Full-length threading along the 1 1/2" length provides maximum holding power across the entire fastener
• Environmental compliance assurance with RoHS 3 and REACH standards for sustainable manufacturing practices
• Lightweight non-conductive properties make these screws ideal for electrical and electronic applications

Professional Applications & Engineering Value

These PTFE plastic hex head screws deliver critical performance advantages in demanding industrial settings where metal fasteners would fail. The chemical-resistant properties of PTFE prevent degradation from acids, solvents, and corrosive substances, while the temperature stability maintains structural integrity from cryogenic conditions to high-heat processing environments. The UNC coarse thread design with Class 2A fit ensures reliable engagement in plastic, composite, and soft material applications, reducing stripping and cross-threading risks. These fully threaded screws with external hex drive provide maximum clamping force distribution for equipment requiring frequent maintenance in chemical processing, food manufacturing, semiconductor, and pharmaceutical industries where contamination-free operation is essential.

Specification Summary & Compliance

This 3/8"-16 UNC hex head screw features precision Class 2A thread fit with coarse thread spacing and full threading along the 1 1/2" length. Manufactured to inch system standards with 9/16" hex head width and 17/64" head height for standard tool compatibility. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring adherence to international substance restriction requirements for industrial applications.