S-98057A663 1/4"-20 x 1/2" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from 316 Stainless Steel construction, ideal for harsh environments and chemical exposure
• Excellent vibration resistance and secure locking with the cup point tip design that bites into mating surfaces
• Reliable and consistent thread engagement ensured by Class 2A thread fit for general applications
• High mechanical strength and durability with a Rockwell B80 hardness rating for long service life
• Space-saving and flush installation due to the headless, slotted design
• Broad compatibility with coarse UNC 1/4"-20 threads, a common industrial standard
• Compliance with major industry and environmental regulations including ASME B18.3, RoHS 3, and REACH

Professional Applications & Engineering Value

This 1/4"-20 UNC set screw is engineered to solve critical challenges in industrial assembly and machinery. The 316 Stainless Steel material provides exceptional resistance to corrosion and oxidation, making it a reliable choice for applications exposed to moisture, chemicals, or outdoor elements. The headless, slotted design allows for a flush fit in tight spaces, while the cup point tip creates a strong bite into the shaft or component, preventing slippage and maintaining position under high vibration or rotational forces. This combination of corrosion-resistant properties and a secure gripping mechanism ensures long-term performance and reduces maintenance needs in demanding settings such as automotive, marine, and food processing equipment.

Specification Summary & Compliance

This set screw features a 1/4"-20 UNC coarse thread with a Class 2A thread fit for consistent and reliable assembly. It is manufactured in compliance with the ASME B18.3 standard, ensuring dimensional accuracy and performance. The product is also confirmed to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations for industrial use.