S-93235A106 4-40 x 1/4" Vented Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Precise Class 3A thread fit ensures reliable engagement and vibration resistance in critical assemblies
• High tensile strength of 70,000 psi provides exceptional load-bearing capacity for demanding applications
• Vented design with 0.035" diameter prevents pressure buildup and allows for pressure equalization
• Standard hex socket drive (3/32") enables secure installation with common tools and reduced slippage
• Rockwell B70 hardness offers excellent wear resistance and long-term durability
• Full compliance with RoHS 3 and REACH meets environmental regulations for global industrial use

Professional Applications & Engineering Value

This 4-40 UNC Socket Head Cap Screw in 18-8 Stainless Steel delivers critical performance in precision engineering applications where corrosion resistance, strength, and reliability are paramount. The Class 3A thread fit and coarse UNC thread form provide secure fastening in metals and plastics, minimizing loosening under vibration. The integrated vented feature is essential for pressure-sensitive assemblies, such as in electronics enclosures or pneumatic systems, preventing seal failure. With a 70,000 psi tensile strength and Rockwell B70 hardness, it withstands high-stress conditions in machinery, automotive, and aerospace components, ensuring long service life with minimal maintenance.

Specification Summary & Compliance

This socket head cap screw features a 4-40 UNC coarse thread with Class 3A precision tolerance for consistent fit. Dimensions include a 1/4" length, 0.183" head diameter, and 3/32" hex drive. Manufactured from 18-8 Stainless Steel, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring safe use in regulated industrial and electronic applications.