S-90300A180 3/8"-16 x 1" Hex Head Screws with Flat Washer

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Enhanced load distribution through the integrated flat washer, preventing surface damage and loosening
• High tensile strength of 100,000 psi ensures reliable performance under heavy loads and stress
• Rockwell B95 hardness provides excellent durability and resistance to wear
• Class 2A thread fit offers consistent, easy assembly while maintaining secure fastening
• External hex drive design allows for straightforward installation with standard tools
• Full threading ensures maximum grip and holding power along the entire screw length

Professional Applications & Engineering Value

This 3/8"-16 UNC hex head screw with an integrated stainless steel flat washer is engineered to address common industrial fastening challenges. The 18-8 stainless steel material offers exceptional corrosion resistance, making it suitable for outdoor, marine, and chemical-exposed applications where rust prevention is critical. The coarse UNC thread and Class 2A fit facilitate quick installation and reduce cross-threading risks, while the washer distributes clamping force evenly to protect surfaces and maintain joint integrity. With a 100,000 psi tensile strength and full threading, it provides reliable, vibration-resistant connections in machinery, structural assemblies, and heavy equipment, minimizing maintenance needs and downtime.

Specification Summary & Compliance

This screw features a 3/8"-16 UNC coarse thread with Class 2A tolerance for precise fit, a 1" length, and an external hex drive. It includes a flat washer with a 1.015" OD and 0.064" thickness, both made from stainless steel. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets environmental and safety standards for industrial use.