S-95092A324 4-40 x 3/8" ASME B18.13 Stainless Steel Pan Head Phillips Screws with Flat and Split Lock Washer
Stainless Steel Pan Head Phillips Screws with Flat and Split Lock Washer
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Washer & Nut
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior vibration resistance with integrated lock washer, preventing loosening in dynamic applications
- Excellent corrosion resistance through 18-8 stainless steel construction and passivated surface treatment
- High tensile strength of 70,000 psi ensures reliable performance in demanding industrial environments
- Quick installation and removal with No. 1 Phillips drive and coarse UNC threading
- Precision thread fit (Class 2A) provides consistent engagement and reduced cross-threading risk
- Comprehensive regulatory compliance including RoHS 3 and REACH for global market acceptance
- Complete threading along 3/8" length offers maximum grip and holding power
Professional Applications & Engineering Value
This 4-40 UNC rounded head Phillips screw with lock washer delivers exceptional engineering value in vibration-prone applications where fastener security is critical. The combination of 18-8 stainless steel material and passivated finish provides reliable corrosion resistance in harsh environments, while the integrated lock washer maintains clamping force under continuous vibration. The pan head design with No. 1 Phillips drive ensures easy installation in confined spaces, making it ideal for electronic enclosures, machinery assemblies, and automotive components where vibration-resistant fastening and regulatory compliance are essential. The coarse thread pitch and Class 2A thread fit guarantee consistent performance in production environments.
Specification Summary & Compliance
This fully threaded 4-40 UNC screw features precision Class 2A thread fit with right-hand direction and coarse spacing. Manufactured to ASME B18.13 specifications with dimensional accuracy maintained through length tolerance of -0.02" to 0". The assembly complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and global market acceptance. All components, including the flat washer (0.375" OD) and split lock washer, are constructed from 18-8 stainless steel with passivated finish for consistent corrosion protection throughout the fastener system.
