S-98164A177 10-32 x 3/8" ASME B18.3, ASTM F879 Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 316 stainless steel construction, ideal for harsh environments and chemical exposure
• Exceptional thread reliability with Class 3A fit, ensuring precise, vibration-resistant connections in critical assemblies
• High-strength performance offering 70,000 psi tensile strength and Rockwell B55 hardness for demanding mechanical applications
• Enhanced durability and surface protection from the passivated finish, extending service life and preventing galling
• Secure and efficient installation with the 1/8" hex drive, providing positive torque transmission and reducing tool slippage
• Optimized for fine-thread applications using 10-32 UNF threading for improved adjustment precision in thinner materials
• Low-profile, rounded button head design for a finished appearance and reduced risk of snagging in assembled products

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these 10-32 UNF rounded head screws in 316 stainless steel address critical challenges in machinery, marine, and chemical processing equipment. The Class 3A thread fit and fine thread spacing provide superior resistance to loosening under vibration, a common failure point in dynamic systems. The passivated finish enhances the innate corrosion resistance of the 316 alloy, making these hex drive screws suitable for wash-down environments or exposure to chlorides. With a fully threaded design and high tensile strength, they deliver reliable clamping force in precision assemblies, from electronic enclosures to fluid handling systems, ensuring long-term operational integrity.

Specification Summary & Compliance

This product features precision 10-32 UNF threading with a Class 3A fit and right-hand thread direction, manufactured to exacting dimensional standards. It complies with ASME B18.3 specifications (where identified as ASTM F879) for consistent quality and interchangeability. The screw is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant (as of 06/14/2023, 235 SVHC), ensuring adherence to environmental and safety regulations for global industrial use.