S-90251A264 10-32 x 3/4" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Permanent vibration resistance with nylon patch thread locker that maintains secure fastening in dynamic applications
• Superior corrosion resistance from 18-8 stainless steel construction for long-term reliability in harsh environments
• Precise thread engagement with Class 3A fit ensuring consistent clamping force and reduced installation torque variation
• High-temperature stability with locking performance maintained across -70° to 250°F operational range
• Optimized drive transfer through hex socket design providing maximum torque application without head protrusion
• Enhanced surface contact with cup tip design distributing clamping force evenly across engaged components
• Industry compliance assurance meeting ASME B18.3 specifications for dimensional accuracy and performance standards

Professional Applications & Engineering Value

This 10-32 UNF nylon patch set screw delivers critical vibration-resistant locking for precision assemblies where space constraints and reliability are paramount. The 18-8 stainless steel construction provides excellent corrosion resistance for outdoor equipment, marine components, and food processing machinery, while the fine thread spacing ensures superior holding power in softer materials. The hex headless design allows flush mounting in counterbored applications, making it ideal for shaft collars, gears, and pulleys where protruding fasteners would interfere with operation. With its Class 3A thread fit and nylon patch locking technology, this set screw eliminates the need for secondary locking devices, reducing assembly time and maintenance requirements in automotive, aerospace, and industrial machinery applications.

Specification Summary & Compliance

Manufactured to ASME B18.3 specifications with Class 3A thread fit precision and UNF fine thread form. The 18-8 stainless steel material achieves Rockwell B80 hardness for optimal strength-to-weight ratio. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global markets. The nylon patch thread locker maintains performance throughout the specified -70° to 250°F temperature range without degradation.