S-90400A144 6-32 x 1/4" ASME B18.13 Steel Pan Head Phillips Screws with Spring Lock Washer
Steel Pan Head Phillips Screws with Spring 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 corrosion resistance with zinc-plated steel construction, extending service life in demanding environments
- Enhanced vibration resistance through integrated spring lock washer that maintains clamping force under dynamic loads
- Reliable fastening performance with 60,000 psi tensile strength and Rockwell B70 hardness for heavy-duty applications
- Quick installation and removal with Phillips No. 2 drive and coarse UNC threads that reduce assembly time
- Consistent thread engagement through Class 2A thread fit and full threading for uniform load distribution
- Optimized bearing surface with pan head design that provides excellent load distribution and prevents surface damage
- Secure locking action from the spring lock washer that resists loosening under vibration and thermal cycling
Professional Applications & Engineering Value
These zinc-plated steel pan head screws with integrated spring lock washers deliver critical vibration resistance in industrial assemblies where dynamic loads and thermal cycling cause conventional fasteners to fail. The coarse UNC 6-32 threading ensures rapid installation in production environments while maintaining Class 2A thread fit precision for consistent torque values. The combination of 60,000 psi tensile strength and Rockwell B70 hardness provides exceptional durability in machinery, electrical enclosures, and automotive components where vibration-resistant fastening is essential. The zinc-plated finish offers reliable corrosion protection, making these fully threaded screws ideal for outdoor equipment and industrial maintenance applications.
Specification Summary & Compliance
Manufactured to ASME B18.13 specifications with Class 2A thread fit tolerance for precise engagement. Features UNC coarse threads (6-32) with right-hand direction and full threading along the 1/4" length. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for industrial use worldwide.
