S-90288A249 10-24 x 1 1/4" ASME B18.6.3 Tamper-Resistant One-Way-Drive Stainless Steel Round Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments
• Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B96 hardness for reliable performance under high stress
• Optimized thread engagement with UNC coarse threads and Class 2A fit ensuring quick assembly and vibration resistance
• Secure tamper-resistant design featuring one-way drive style for permanent installations requiring enhanced security
• Full-length threading provides maximum grip length and consistent fastening force across the entire shank
• Standard-compliant manufacturing meeting ASME B18.6.3 specifications for dimensional accuracy and interchangeability
• Environmental compliance with RoHS 3 and REACH regulations for safe use in regulated industries

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these 10-24 UNC coarse thread rounded head screws deliver critical performance advantages in machinery assembly, electrical enclosures, and structural frameworks. The 18-8 stainless steel material combined with passivated surface treatment creates a protective oxide layer that significantly enhances corrosion resistance in humid or chemically aggressive environments. The rounded head profile with one-way drive mechanism provides permanent fastening solutions where tamper resistance is essential, while the fully threaded design ensures maximum thread engagement and clamping force distribution. These screws effectively address common engineering challenges including vibration loosening, material compatibility issues, and compliance requirements in regulated industries.

Specification Summary & Compliance

Manufactured to precise Class 2A thread fit tolerances with UNC coarse threading (10-24 size) in right-hand direction. Dimensions include 1-1/4" length, 0.359" head diameter, and 0.137" head height. Complies with ASME B18.6.3 manufacturing standards for dimensional consistency and mechanical properties. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance requirements for restricted substance control.