S-92929A222 1/4"-20 x 5/8" ASME B18.6.3 Plastic Slotted Flat Head Screws

Key Features & Benefits at a Glance

• Excellent corrosion resistance due to nylon plastic construction, eliminating rust and chemical degradation in harsh environments
• Secure flush mounting with standard 100° countersink angle and flat head design for smooth, unobtrusive surface finishes
• Reliable coarse thread engagement with UNC 1/4"-20 threading providing strong holding power in plastic and soft materials
• Precise Class 2A thread fit ensuring consistent installation torque and vibration resistance in assembled components
• Broad temperature tolerance from -40°F to 185°F for stable performance across diverse industrial and outdoor applications
• Full threading along 5/8" length delivers maximum grip depth and adjustable positioning in assembly setups
• Compliance with ASME B18.6.3 and RoHS 3 guarantees manufacturing consistency and environmental safety for regulated industries

Professional Applications & Engineering Value

Engineered for demanding industrial environments, this nylon plastic flat head screw solves critical challenges where metal fasteners fail. Its non-conductive and chemically inert properties prevent electrical shorts and resist oils, solvents, and moisture—making it ideal for electrical enclosures, marine equipment, and food processing machinery. The coarse UNC thread and Class 2A fit provide rapid installation with reduced cross-threading risks in thermoplastic assemblies, while the 100° countersink ensures flush mounting without snagging or interference. Fully threaded for maximum adjustability, it maintains clamp force under vibration, offering a lightweight, durable alternative to steel in corrosion-prone applications.

Specification Summary & Compliance

This fastener adheres to inch system dimensions with a 1/4"-20 UNC coarse thread and Class 2A thread fit per ASME B18.6.3, ensuring dimensional accuracy and interchangeability. Manufacturing complies with RoHS 3 (2015/863/EU) directives, confirming the absence of restricted hazardous substances. The screw features a standard flat head profile with 100° countersink angle, right-hand thread direction, and full threading across its 5/8" length for consistent performance in industrial assemblies.