S-93802A318 2-56 x 3/16" MIL-DTL-18240 Sealing Thread-Locking Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior sealing performance with silicone rubber O-rings rated for up to 6000 psi maximum pressure, preventing leaks in demanding environments
• Reliable vibration resistance through nylon patch thread locking that maintains integrity across a wide temperature range (-40° to 225°F)
• Exceptional corrosion resistance thanks to 18-8 stainless steel construction with passivated finish for long-term durability
• High tensile strength of 70,000 psi ensures structural integrity under heavy mechanical loads
• Precise thread engagement with Class 2A UNC coarse threads providing secure fastening in various materials
• Broad temperature compatibility with O-rings functioning from -80° to 400°F for extreme environment applications
• Industry compliance assurance meeting MIL-DTL-18240 specifications and environmental regulations (RoHS 3, REACH)

Professional Applications & Engineering Value

These 2-56 UNC rounded head screws deliver critical engineering solutions where both vibration resistance and environmental sealing are paramount. The combination of nylon patch thread locking and silicone rubber O-rings addresses common industrial challenges of fastener loosening under dynamic loads and fluid/gas leakage in pressurized systems. Manufactured from 18-8 stainless steel with a passivated finish, these screws maintain performance in corrosive environments while the Phillips drive and pan head design provide efficient installation in confined spaces. Ideal for high-pressure equipment, aerospace assemblies, and industrial machinery requiring reliable, maintenance-free fastening solutions.

Specification Summary & Compliance

These fully threaded screws feature Class 2A thread fit with UNC coarse threading (2-56 size) ensuring proper engagement in various materials. The manufacturing process adheres to MIL-DTL-18240 specifications, guaranteeing consistent quality and performance. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, making these screws suitable for regulated industries worldwide. The combination of precise dimensional control and material certifications provides engineers with reliable components for critical applications.