S-92198A547 1/4"-20 x 1 5/8" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and long-term reliability
• High tensile strength of 80,000 psi ensures secure, heavy-duty fastening for demanding industrial applications
• Precise Class 2A thread fit guarantees smooth assembly and consistent performance with standard UNC nuts
• External hex drive and hex head design provides excellent torque transmission and easy installation with common tools
• Partially threaded shank allows for unthreaded grip length, improving shear strength and vibration resistance in assemblies
• Compliance with ASME B18.2.1, RoHS 3, and REACH ensures adherence to industry standards and environmental safety regulations
• Coarse UNC thread enables quick assembly and reduced cross-threading risk in various materials

Professional Applications & Engineering Value

Engineered for industrial and construction applications, this 1/4"-20 UNC Hex Head Screw delivers exceptional performance where corrosion resistance and high tensile strength are critical. The 18-8 Stainless Steel material combats rust and chemical exposure, making it suitable for outdoor equipment, marine environments, and food processing machinery. Its partially threaded design and Class 2A thread fit minimize loosening under vibration, while the external hex drive ensures efficient installation in tight spaces. This screw solves common fastening challenges by providing a reliable, ASME B18.2.1 compliant solution that enhances assembly integrity and reduces maintenance needs in heavy-duty mechanical systems.

Specification Summary & Compliance

This screw features a 1/4"-20 UNC coarse thread with Class 2A thread fit for precise dimensional accuracy. It meets ASME B18.2.1 manufacturing specifications, ensuring consistent quality and interchangeability. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) confirms it is free from hazardous substances, supporting safe and sustainable industrial use. Additional specifications include a 1 5/8" length, Rockwell B70 hardness, and right-hand threading, all designed to uphold performance standards in professional fastening applications.