S-92185A118 4-40 x 1 1/4" Super-Corrosion-Resistant 316 Stainless Steel Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh chemical and marine environments
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for heavy-duty applications
• Precise thread engagement through Class 3A fit UNC coarse threads ensuring reliable, vibration-resistant connections
• Enhanced chemical protection from passivated surface finish that improves corrosion resistance and longevity
• Secure hex drive installation with 3/32" drive size providing positive torque transmission and reduced cam-out risk
• Optimized thread design with partially threaded shank for concentrated clamping force where needed most
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for global industrial applications

Professional Applications & Engineering Value

Engineered for demanding industrial environments, this 316 stainless steel socket head cap screw delivers exceptional performance where corrosion resistance and mechanical reliability are critical. The UNC coarse thread profile with Class 3A precision fit ensures rapid assembly and secure fastening in vibration-prone applications, while the passivated finish provides an additional protective barrier against chemical exposure. Ideal for marine equipment, chemical processing machinery, and food processing applications, this fastener maintains integrity under continuous stress with its 70,000 psi tensile strength. The hex socket drive design allows for high-torque installation in confined spaces, making it particularly valuable in precision equipment assembly and maintenance operations where access is limited but performance cannot be compromised.

Specification Summary & Compliance

This socket head cap screw features 4-40 UNC coarse threads with Class 3A thread fit precision, ensuring tight tolerances for secure fastening applications. The fastener maintains dimensional accuracy with a head diameter of 0.183", head height of 0.112", and overall length of 1 1/4". Manufacturing complies with industry standards for 316 stainless steel fasteners, including full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for global industrial applications requiring strict material and safety standards.