S-96562A919 4-40 x 7/8" ASME B18.6.3 Thread-Locking Stainless Steel Pan Head Phillips Screws
Thread-Locking Stainless Steel Pan Head Phillips Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Vibration-resistant locking with nylon patch thread locker prevents loosening under dynamic loads, ensuring long-term joint integrity
- Exceptional corrosion resistance from 18-8 stainless steel construction maintains performance in harsh industrial environments
- High-strength reliability with 60,000 psi tensile strength and Rockwell B70 hardness withstands demanding mechanical stresses
- Wide temperature compatibility from -70° to 250°F allows consistent performance across diverse operating conditions
- Secure Phillips drive engagement provides efficient installation with standard No. 1 drive tools
- Optimized coarse threading (UNC) enables rapid assembly and superior holding power in various materials
- Full-threaded design maximizes grip length and load distribution along the entire 7/8" shaft
Professional Applications & Engineering Value
These 4-40 UNC rounded head screws deliver critical vibration resistance in industrial equipment, electronics enclosures, and machinery assemblies where thermal cycling and mechanical stress compromise standard fasteners. The nylon patch thread locker creates permanent friction locking without chemical adhesives, eliminating maintenance interventions in hard-to-access locations. Manufactured from 18-8 stainless steel with passivated finish, these Phillips drive screws resist chemical degradation while maintaining precise Class 2A thread tolerances for consistent mating with nuts and threaded holes. The pan head profile provides optimal bearing surface for secure clamping in automotive, aerospace, and manufacturing applications where reliability cannot be compromised.
Specification Summary & Compliance
This fully threaded screw maintains precise Class 2A thread fit per UNC standards with coarse thread spacing for optimal engagement. Manufacturing complies with ASME B18.6.3 specifications for dimensional consistency. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring restricted substance adherence for global industrial applications.
