S-91772A521 6-40 x 3/4" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction, ideal for harsh industrial environments
• High tensile strength of 70,000 psi ensures reliable fastening under demanding mechanical loads
• Fine thread spacing with Class 2A fit provides precise engagement and vibration resistance
• Fully threaded design delivers maximum grip and load distribution across the entire length
• Pan head with Phillips No. 2 drive offers easy installation and a low-profile, rounded finish
• Compliance with ASME B18.6.3 guarantees consistent quality and dimensional accuracy
• RoHS 3 and REACH compliant for environmentally responsible and safe usage in regulated industries

Professional Applications & Engineering Value

These 6-40 UNF pan head screws in passivated 18-8 stainless steel address critical needs in industrial assembly where corrosion resistance and mechanical reliability are paramount. The fine thread spacing and Class 2A thread fit ensure tight, secure fastening in applications prone to vibration, such as machinery, electronics enclosures, and automotive components. The fully threaded design maximizes surface contact, enhancing load distribution and preventing loosening over time. With a Phillips drive for straightforward installation and a rounded pan head that minimizes snagging, these screws provide a durable, maintenance-free solution for OEM and MRO professionals seeking long-term performance in demanding environments.

Specification Summary & Compliance

This screw features a 6-40 UNF thread with Class 2A tolerance for precise fit, a 3/4" length, and is fully threaded. It meets ASME B18.6.3 specifications for dimensional consistency and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free of hazardous substances and suitable for global industrial use.