S-95955A289 10-32 x 3/8" Left-Hand-Thread Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• High tensile strength of 80,000 psi ensures reliable performance under heavy loads and vibration
• Precision Class 2A thread fit guarantees consistent engagement and reduces cross-threading risks
• Left-hand threading provides secure fastening in applications where right-hand rotation would loosen standard screws
• Fine UNF thread spacing offers superior holding power and vibration resistance compared to coarse threads
• 1/8" hex drive design enables easy installation and removal with standard tools in confined spaces
• Full compliance with RoHS 3 and REACH regulations ensures environmental safety and global market acceptance

Professional Applications & Engineering Value

These 10-32 UNF left hand thread screws with rounded head design solve critical engineering challenges in industrial settings where reverse-threading applications are essential. The 18-8 stainless steel composition provides excellent corrosion resistance, making them ideal for marine equipment, food processing machinery, and chemical processing plants where moisture and corrosive elements are present. The fine thread configuration delivers superior vibration resistance in high-stress applications such as rotating machinery, automotive assemblies, and precision instruments. With Rockwell B85 hardness and fully threaded construction, these screws maintain structural integrity while preventing unintentional loosening in counter-rotational systems, ensuring long-term reliability in demanding industrial environments.

Specification Summary & Compliance

This rounded head screw features precision Class 2A thread fit according to UNF standards, ensuring dimensional accuracy and proper mating with corresponding nuts and threaded holes. The manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental compliance and safety standards. The 10-32 UNF left hand thread with fine spacing provides reliable performance in specialized applications requiring reverse-threading solutions, while the 3/8" length and 0.361" head diameter offer optimal dimensional consistency for industrial assembly requirements.