S-92991A533 1/4"-20 x 1/4" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to brass construction, ideal for harsh industrial environments and moisture-prone applications
• Exceptional thread precision and reliability with Class 3A fit, ensuring tight, secure fastening and reduced risk of loosening under vibration
• High durability and deformation resistance from Rockwell B55 hardness, maintaining fastener integrity under repeated use
• Secure, non-slip installation enabled by the 1/8" hex drive and headless design, allowing flush mounting in confined spaces
• Enhanced gripping and component alignment with the cup tip, providing concentrated contact pressure to prevent shifting
• Broad industry compatibility through UNC coarse threading and 1/4"-20 size, suitable for standard assembly requirements
• Regulatory peace of mind with full compliance to ASME B18.3, RoHS 3, and REACH, ensuring safety and environmental standards are met

Professional Applications & Engineering Value

Engineered for demanding industrial settings, this brass set screw delivers critical performance where corrosion resistance and precision are paramount. The UNC coarse thread and Class 3A thread fit provide a secure, vibration-resistant hold in machinery, electrical enclosures, and precision instruments, reducing maintenance needs. Its headless design with hex drive allows for flush installation in tight spaces, while the cup tip concentrates force to prevent component slippage. Ideal for industrial fastening in OEM assemblies, marine equipment, and plumbing systems, this fastener ensures long-term reliability without galvanic corrosion risks, aligning with stringent ASME B18.3 specifications for consistent quality.

Specification Summary & Compliance

This set screw adheres to precise dimensional standards, including a Class 3A thread fit for superior tolerance control and UNC coarse threading (1/4"-20) per ASME guidelines. Manufacturing conforms to ASME B18.3 specifications, with material hardness rated at Rockwell B55. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free of restricted hazardous substances and safe for industrial use.