S-92929A141 4-40 x 1" ASME B18.6.3 Plastic Slotted Flat Head Screws

Key Features & Benefits at a Glance

• Excellent corrosion resistance due to nylon plastic construction, ideal for humid or chemically exposed environments without rust concerns.
• Secure, flush-mount installation with a standard 100° countersink angle and flat head design for a smooth, unobtrusive finish.
• Reliable coarse threading (UNC) ensures faster assembly and reduced risk of cross-threading in softer materials or plastic assemblies.
• Broad operational temperature tolerance from -40°F to 185°F, maintaining integrity in varied thermal conditions.
• Full threading along the 1" length provides maximum grip and holding power across the entire engagement area.
• Simplified manual installation and removal with a slotted drive, compatible with standard screwdrivers.
• Assured dimensional consistency with Class 2A thread fit for reliable, predictable performance in assembly lines.

Professional Applications & Engineering Value

This nylon plastic flat head screw is engineered to address common challenges in electrical enclosures, consumer electronics, and lightweight structural assemblies where electrical insulation, weight reduction, and corrosion resistance are critical. The 4-40 UNC coarse thread design facilitates quick installation into plastic or soft metal substrates, minimizing stripping. Its fully threaded shank and 100° countersink angle ensure a tight, flush fit that prevents snagging and maintains aesthetic continuity. By utilizing a RoHS 3 and REACH compliant material, these screws support sustainable manufacturing and are safe for use in sensitive applications, from medical devices to food processing equipment, without risk of metallic contamination or galvanic corrosion.

Specification Summary & Compliance

This fastener features a Class 2A thread fit per unified inch standards, ensuring interchangeability and consistent performance. It is manufactured in compliance with ASME B18.6.3 for dimensional accuracy and mechanical requirements. The screw is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming adherence to stringent environmental and safety regulations for hazardous substances. All specifications, including the 1" length, 0.225" head diameter, and right-hand thread direction, are controlled to provide reliable fastening solutions for industrial applications.