S-93310A260 10-32 x 3/8" ASME B18.3, ASTM F879, MIL-DTL-18240 Thread-Locking Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Permanent vibration resistance through nylon patch locking that maintains secure fastening in high-stress environments
• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial and electronic applications
• High-strength performance delivering 70,000 psi tensile strength and Rockwell B55 hardness for demanding mechanical assemblies
• Wide temperature tolerance from -70° to 250°F, ensuring reliable operation in extreme thermal conditions
• Precision thread engagement with Class 3A fine UNF threads for secure, vibration-resistant connections
• Easy installation and removal using standard 1/8" hex drive with rounded button head design
• Full regulatory compliance meeting ASME, ASTM, and military standards while being RoHS 3 and REACH compliant

Professional Applications & Engineering Value

Engineered for critical applications where vibration loosening compromises assembly integrity, these 10-32 UNF nylon patch locking screws provide permanent fastening security without requiring additional locking components. The 18-8 stainless steel construction offers excellent corrosion resistance for electronics, machinery, and industrial equipment exposed to moisture, chemicals, or outdoor elements. The fine thread configuration with Class 3A precision ensures maximum thread engagement in thin materials and delicate assemblies, while the rounded button head with hex drive facilitates installation in confined spaces. These locking fasteners maintain their holding power across extreme temperature ranges from -70° to 250°F, making them ideal for automotive, aerospace, and industrial machinery applications where thermal cycling and vibration are constant challenges.

Specification Summary & Compliance

This 10-32 UNF fine thread screw features precision Class 3A thread fit with full threading along the 3/8" length. Manufactured to ASME B18.3, ASTM F879, and MIL-DTL-18240 specifications, ensuring consistent quality and performance. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making them suitable for global industrial applications requiring strict chemical substance control.