S-91375A223 5-44 x 3/16" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance provided by the black-oxide finish on alloy steel, extending service life in demanding environments.
• Exceptional holding power and minimal backlash due to the Class 3A thread fit, ensuring precise and secure fastening in critical assemblies.
• High strength and durability from the Rockwell C45 hardened alloy steel, resisting wear and deformation under load.
• Secure, flush-mount installation enabled by the headless design and 1/16" hex drive, ideal for confined spaces and sleek assemblies.
• Reliable, non-slip grip from the cup tip, which bites into the contact surface to prevent component movement.
• Wide industry compatibility with the 5-44 UNF fine thread, a standard used in precision engineering applications.
• Guaranteed quality and safety as it meets ASME B18.3 specifications and is compliant with RoHS 3 and REACH environmental regulations.

Professional Applications & Engineering Value

This 5-44 UNF set screw is engineered to solve common industrial challenges like component slippage and corrosion-induced failure. The Black-Oxide Alloy Steel construction provides a robust barrier against rust and oxidation, making it suitable for applications exposed to moisture or harsh chemicals. The headless design and fine thread allow for a low-profile, high-clamp force installation, which is critical in precision machinery, automotive components, and electronic enclosures where space is limited and vibration resistance is paramount. The cup tip concentrates pressure on a small area, creating a secure dimple in the shaft to prevent axial movement, ensuring your assemblies remain intact under dynamic loads. This combination of material properties and thread precision delivers reliable performance in demanding set screw applications, reducing maintenance needs and improving overall system longevity.

Specification Summary & Compliance

This set screw features a 5-44 UNF fine thread with a Class 3A fit, ensuring tight tolerances and superior thread engagement for high-precision assemblies. It is manufactured in accordance with ASME B18.3 standards, guaranteeing dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety requirements for hazardous substances.