S-92941A551 1/4"-20 x 2 1/4" ASME B18.2.1 Brass Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with brass construction, ideal for harsh environments and moisture-prone applications
• High tensile strength of 50,000 psi ensures reliable load-bearing capacity and joint integrity under stress
• Rockwell B55 hardness provides excellent durability and resistance to wear during installation and use
• External hex drive design allows for secure, high-torque fastening with standard tools, reducing slippage
• 1/4"-20 UNC coarse threading enables quick assembly and better performance in softer materials or where debris is present
• Partial threading offers controlled grip length, minimizing thread damage and improving clamp load distribution
• Compliance with ASME B18.2.1, RoHS 3, and REACH guarantees consistent quality, safety, and environmental standards

Professional Applications & Engineering Value

This brass hex head screw is engineered to address common industrial challenges, such as corrosion in electrical, marine, and plumbing systems. The 1/4"-20 UNC coarse thread ensures rapid installation and reliable holding power in materials like wood, plastic, or soft metals, reducing assembly time and labor costs. With a partially threaded design, it provides precise clamping force without over-tightening, protecting components from stress concentration. The external hex drive facilitates easy access in confined spaces, while the brass material offers inherent corrosion resistance, extending service life in humid or chemical-exposed environments. Ideal for machinery, HVAC, and automotive assemblies, this screw delivers consistent performance where durability and regulatory compliance are critical.

Specification Summary & Compliance

This screw features a Class 2A thread fit for standard tolerance and easy assembly, with dimensions including a 2 1/4" length, 1/4"-20 UNC coarse threads, and a 7/16" hex head. It conforms to ASME B18.2.1 manufacturing specifications, ensuring dimensional accuracy and reliability. Additionally, it is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, meeting environmental and safety regulations for hazardous substance restrictions.