S-91970A634 3/8"-16 x 2 1/2" Plastic Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from high-quality nylon plastic construction, eliminating rust and degradation in harsh environments
• Excellent electrical insulation properties for safe use in electrical assemblies and sensitive electronic applications
• Wide temperature tolerance from -40°F to 185°F ensures reliable performance across diverse operating conditions
• Precise Class 2A thread fit provides smooth installation and secure fastening with standard UNC coarse threading
• External hex drive design enables quick installation with common tools while the 9/16" head width offers superior torque transmission
• RoHS 3 compliance guarantees environmental responsibility and meets international regulatory standards for hazardous substances
• Partial threading configuration combines the strength of full engagement with the flexibility for adjustable clamping applications

Professional Applications & Engineering Value

These nylon plastic hex head screws deliver critical engineering advantages where metal fasteners fail. The black nylon construction provides inherent corrosion resistance without additional coatings, making them ideal for chemical processing, marine, and outdoor applications. Their electrical insulation properties prevent short circuits in electrical enclosures, control panels, and electronic assemblies. The 3/8"-16 UNC coarse thread with Class 2A fit ensures reliable engagement in plastic and soft materials while resisting vibration loosening. With a 2 1/2" length and partial threading, these screws offer optimal clamp load distribution for panel mounting, machinery guards, and structural components where weight reduction and non-conductive properties are essential.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit and UNC coarse threading (3/8"-16) ensuring compatibility with standard components. The screws feature a 17/64" head height and 9/16" head width for consistent tool engagement. These externally driven hex head screws with right-hand threading comply with RoHS 3 (2015/863/EU) regulations, containing no restricted hazardous substances. The 0.375" thread diameter and 1" minimum thread length provide reliable fastening performance across industrial applications.