S-92949A647 3/8"-16 x 5 1/2" ASME B18.3 Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance from 18-8 stainless steel and passivated finish, ideal for harsh environments
• High tensile strength of 70,000 psi ensures reliable performance in demanding applications
• Precision Class 3A thread fit provides secure, vibration-resistant fastening with minimal backlash
• Fully threaded UNC coarse spacing enables faster installation and superior holding power
• 7/32" hex drive with rounded button head offers clean appearance and secure tool engagement
• Rockwell B55 hardness maintains thread integrity and prevents stripping during repeated use
• Full compliance with ASME B18.3, RoHS 3 and REACH guarantees quality and environmental safety

Professional Applications & Engineering Value

Engineered for industrial applications requiring both strength and corrosion resistance, these 18-8 stainless steel rounded head hex screws solve critical fastening challenges. The passivated finish significantly enhances surface durability against chemical exposure and moisture, while the UNC coarse thread with Class 3A precision ensures rapid assembly without compromising joint security. The combination of 70,000 psi tensile strength and Rockwell B55 hardness makes these fully threaded screws ideal for machinery, structural frameworks, and equipment subjected to dynamic loads. The rounded button head design provides a flush finish while the 7/32" hex drive prevents cam-out during high-torque installation.

Specification Summary & Compliance

Manufactured to exacting standards with Class 3A thread fit and UNC coarse thread spacing (3/8"-16). Complies with ASME B18.3 dimensional specifications, RoHS 3 (2015/863/EU) for hazardous substance restriction, and REACH (EC 1907/2006) for chemical safety. Threading is fully threaded with right-hand direction and meets all specified dimensional tolerances.