S-94444A101 1/4"-20 x 5/8" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with Black-Oxide 18-8 Stainless Steel construction, ideal for harsh industrial environments
• High tensile strength of 80,000 psi ensures reliable performance under heavy loads and vibration
• Rockwell B70 hardness provides superior durability and resistance to wear and deformation
• Fully threaded UNC coarse thread design delivers faster installation and superior holding power
• External hex drive with 7/16" head width allows for high-torque application with standard tools
• Class 2A thread fit guarantees consistent, precise mating with nuts and threaded holes
• Compliance with ASME B18.2.1, RoHS 3, and REACH ensures quality, safety, and environmental responsibility

Professional Applications & Engineering Value

This 1/4"-20 x 5/8" hex head screw is engineered for demanding industrial applications where reliability and corrosion resistance are critical. The Black-Oxide 18-8 Stainless Steel material provides excellent protection against rust and chemical exposure, making it suitable for outdoor equipment, marine hardware, and manufacturing machinery. The UNC coarse thread design ensures quick assembly and strong grip in various materials, while the external hex drive allows for high torque application without stripping. With its 80,000 psi tensile strength and Rockwell B70 hardness, this fastener maintains integrity under stress, vibration, and temperature fluctuations, reducing maintenance needs and downtime in heavy-duty operations.

Specification Summary & Compliance

This hex head screw features precise Class 2A thread fit with 1/4"-20 UNC coarse thread and right-hand threading. Manufactured to ASME B18.2.1 standards, it ensures dimensional accuracy and interchangeability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting environmental and safety requirements for industrial use.