S-91221A980 1/4"-20 x 1 1/4" Plastic Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with glass-filled nylon construction, eliminating rust and galvanic compatibility issues in harsh environments.
• Excellent temperature stability for reliable performance across a wide operating range from -20°F to 230°F.
• Lightweight and non-conductive material properties ideal for electrical applications and weight-sensitive assemblies.
• Precise Class 2A thread fit ensures smooth installation and consistent clamping force with UNC coarse threads.
• Secure hex drive engagement with 3/16" drive size providing positive torque transmission and reduced cam-out risk.
• Full regulatory compliance with RoHS 3 and REACH standards, meeting international environmental and safety requirements.
• Durable socket head design maintains structural integrity under repeated use with standard socket head profile.

Professional Applications & Engineering Value

This glass-filled nylon socket head cap screw delivers critical engineering advantages where metal fasteners fall short. The off-white nylon plastic construction provides inherent corrosion resistance, making it perfect for chemical processing, marine, and food-grade applications where metallic contamination or rust presents operational challenges. The 1/4"-20 UNC coarse thread configuration ensures rapid assembly and reliable performance in plastic and soft material applications, while the hex drive style allows for high-torque installation in confined spaces. With temperature resistance spanning from -20° to 230° F, these industrial plastic fasteners maintain dimensional stability across diverse operating conditions, from outdoor equipment to electrical enclosures where electrical insulation is paramount.

Specification Summary & Compliance

This fastener features precision Class 2A thread fit with UNC coarse threads (1/4"-20) and right-hand thread direction. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The 3/16" hex drive and standard socket head profile ensure consistent engagement with standard tools. The fully threaded design provides uniform clamping force along the entire 1 1/4" length, meeting industrial fastening requirements for plastic component assembly.