S-90288A542 1/4"-20 x 1" Tamper-Resistant One-Way-Drive Stainless Steel Round Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance thanks to 18-8 stainless steel construction and passivated finish, ideal for harsh environments
• Superior tensile strength of 80,000 psi ensures reliable performance under high-stress conditions
• Optimized for quick assembly with UNC coarse threading and Class 2A fit, reducing installation time
• Enhanced tamper resistance provided by the one-way drive style, securing critical installations
• Full threading along the 1" length delivers maximum grip and uniform load distribution
• Consistent hardness (Rockwell B96) maintains structural integrity and prevents thread stripping
• Compliance with RoHS 3 and REACH standards guarantees safety and environmental responsibility

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these 18-8 stainless steel rounded head screws address common challenges like corrosion-induced failure and tampering. The passivated finish significantly enhances durability in moist or chemical-exposed environments, while the UNC coarse thread and Class 2A fit ensure rapid, secure fastening with minimal risk of cross-threading. Ideal for machinery, automotive assemblies, and structural applications, the fully threaded design and one-way drive provide reliable, tamper-resistant connections that withstand vibration and heavy loads, reducing maintenance needs and downtime.

Specification Summary & Compliance

This screw adheres to UNC coarse thread standards with a Class 2A thread fit for precise dimensional accuracy. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances. Manufactured to deliver consistent 80,000 psi tensile strength and Rockwell B96 hardness, it is fully threaded for uniform performance across its 1" length.