S-91783A846 10-32 x 4" ASME B18.6.3 Stainless Steel Round Head Slotted Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh environments
• Exceptional mechanical strength offering 100,000 psi tensile strength and Rockwell B100 hardness for reliable, heavy-duty use
• Precise thread engagement with Class 2A fit and UNF fine thread, ensuring secure fastening and vibration resistance
• Optimized load distribution from the rounded head design, minimizing surface damage and stress concentration
• Easy manual installation using a standard slotted drive, providing straightforward assembly and removal
• Regulatory peace of mind with full compliance to ASME B18.6.3, RoHS 3, and REACH standards
• Versatile partial threading allowing unthreaded shank sections for precise clamping and alignment in assemblies

Professional Applications & Engineering Value

Engineered for demanding industrial settings, this 10-32 UNF rounded head slotted screw delivers robust performance where precision and durability are non-negotiable. The 18-8 stainless steel material, enhanced by a passivated finish, provides excellent resistance to oxidation and chemical exposure, making it suitable for machinery, marine equipment, and food processing applications. Its UNF fine thread and Class 2A thread fit ensure tight, reliable connections that resist loosening under dynamic loads. The partially threaded design allows the unthreaded portion to act as a precision pilot or dowel, reducing the risk of cross-threading and improving joint integrity. With a 4" length and slotted drive, it supports easy adjustments in confined spaces, offering engineers a dependable fastener for assembly lines, structural frames, and high-vibration environments.

Specification Summary & Compliance

This screw adheres to inch system dimensions with a Class 2A thread fit per unified screw thread standards, ensuring precise dimensional accuracy. It is manufactured in compliance with ASME B18.6.3 specifications for slotted head screws and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming its suitability for global industrial and commercial use without hazardous substances.