S-92695A719 4-48 x 5/16" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior holding power with 90° cone point design that bites securely into mating surfaces for vibration-resistant fastening
• Exceptional thread precision with Class 3A fit ensuring consistent engagement and reliable performance in critical assemblies
• Enhanced corrosion resistance through black-oxide coating on alloy steel, extending service life in demanding environments
• Optimized strength-to-size ratio with Rockwell C45 hardness providing durable performance without compromising dimensional stability
• Space-saving headless design allowing flush mounting in applications where protruding fasteners are not feasible
• Precise torque application enabled by 0.050" hex drive for secure installation in confined spaces
• Reliable fine thread engagement with UNF 4-48 specification maintaining secure connections under dynamic loads

Professional Applications & Engineering Value

This 4-48 UNF set screw delivers exceptional engineering value in precision mechanical systems where vibration resistance and space constraints present significant challenges. The black-oxide alloy steel construction combined with Rockwell C45 hardness ensures the fastener maintains its structural integrity under repeated stress cycles, while the 90° cone point creates permanent seating impressions that prevent loosening in dynamic applications. The headless design with hex drive allows installation in deeply recessed locations common in industrial machinery, automotive components, and precision instruments. Class 3A thread fit guarantees consistent clamping force distribution, making this fine thread set screw ideal for applications requiring exact positional accuracy and reliable long-term performance.

Specification Summary & Compliance

This precision fastener features 4-48 UNF fine threads with Class 3A thread fit for superior dimensional accuracy. Manufacturing complies with ASME B18.3 specifications (ASTM F912) ensuring consistent quality and performance. The product meets RoHS 3 (2015/863/EU) compliance for restricted substances and REACH (EC 1907/2006) standards for chemical safety. Additional specifications include right-hand thread direction, 5/16" length, and 0.112" thread diameter, providing engineers with reliable fastening solutions that meet rigorous industrial requirements.