S-93580A652 4-40 x 7/8" Stainless Steel Press-Fit Studs

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
• Precision installation in 0.111" holes with a tight tolerance of 0.000" to 0.003", ensuring a secure press-fit and minimizing assembly errors.
• High-strength, fully threaded design with 4-40 UNC coarse threads for maximum engagement and load distribution in sheet metal applications.
• Consistent thread quality with Class 2A fit and right-hand threading, providing reliable performance and ease of assembly.
• Optimized for thin materials, supporting a minimum material thickness of 0.04" and proper edge distance for structural integrity.
• Environmental compliance with RoHS 3 standards, meeting global regulatory requirements for hazardous substance restrictions.
• Enhanced assembly efficiency through standardized inch system dimensions and coarse thread spacing, reducing installation time.

Professional Applications & Engineering Value

This 4-40 UNC stainless steel press-fit stud is engineered to address common challenges in sheet metal assembly, such as loosening under vibration and corrosion in demanding conditions. The 18-8 stainless steel material offers excellent durability and resistance to oxidation, making it suitable for electronics enclosures, automotive components, and industrial machinery. Its fully threaded and right-hand thread design ensures maximum grip and uniform stress distribution, while the precise hole diameter tolerance (0.111" with 0.000" to 0.003" range) guarantees a tight press-fit without additional tools. This reduces the risk of thread stripping and improves overall assembly efficiency in high-volume production environments.

Specification Summary & Compliance

This stud adheres to UNC coarse thread standards with a Class 2A thread fit for consistent external threading. It is manufactured to precise inch system dimensions, including a base diameter of 0.191" and thread length of 51/64". The product complies with RoHS 3 (2015/863/EU) regulations, ensuring it is free from restricted hazardous substances. Designed for use in holes of 0.111" diameter, it meets industry specifications for press-fit fasteners in sheet metal applications.