S-91802A554 1/4"-20 x 3" ASME B18.6.3 Stainless Steel Phillips Oval Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction, ideal for harsh environments and outdoor applications.
• High tensile strength of 80,000 psi ensures reliable load-bearing capacity and structural integrity in demanding assemblies.
• Rockwell B80 hardness provides excellent durability and resistance to wear, extending the screw's service life.
• Oval head with standard profile offers a finished appearance and secure seating in countersunk holes.
• Phillips No. 3 drive allows for efficient installation with common tools, reducing assembly time.
• UNC coarse threading enables quick engagement and strong holding power in a variety of materials.
• Partial threading provides unthreaded shank for precise clamping and alignment in assembled components.

Professional Applications & Engineering Value

This 1/4"-20 x 3" oval head screw is engineered to address common industrial challenges, such as corrosion in humid or chemical-exposed settings. The passivated 18-8 stainless steel material ensures long-term reliability without rust, while the UNC coarse thread design facilitates rapid installation and robust fastening in metal, wood, and plastic substrates. Its partially threaded configuration allows the unthreaded portion to act as a dowel, improving alignment and distributing stress effectively. Ideal for machinery, automotive, and construction applications, this Phillips drive screw combines ease of use with high performance, reducing maintenance needs and downtime in industrial screw assemblies.

Specification Summary & Compliance

This screw adheres to Class 2A thread fit for consistent engagement and meets ASME B18.6.3 specifications for dimensional accuracy. It is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring environmental and safety standards are upheld in industrial supply chains.