S-90403A153 6-32 x 1" ASME B18.13 Steel Pan Head Phillips Screws with Internal-Tooth Lock Washer
Steel Pan Head Phillips Screws with Internal-Tooth 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
- Vibration-resistant locking performance with integrated internal-tooth lock washer prevents loosening under dynamic loads
- Superior corrosion protection through zinc-plated steel construction for extended service life in harsh environments
- High tensile strength rating of 60,000 psi ensures reliable fastening in demanding industrial applications
- Optimized drive engagement with Phillips No. 2 drive provides efficient installation and reduced cam-out risk
- Precision thread compatibility with Class 2A UNC coarse threads ensures consistent mating with standard components
- Enhanced bearing surface from pan head design distributes clamping force evenly across joined materials
- Full threading coverage along the 1" length maximizes grip range and adjustment flexibility
Professional Applications & Engineering Value
These zinc-plated steel screws with internal-tooth lock washers deliver critical vibration resistance in machinery, electrical enclosures, and assembly lines where constant motion threatens fastener integrity. The Rockwell B69 hardness maintains thread form under repeated stress cycles, while the coarse UNC threading enables rapid installation in production environments. The Phillips pan head configuration combines familiar drive mechanics with a low-profile bearing surface, making these rounded head screws ideal for applications requiring flush mounting without specialized tools. Fully threaded design ensures consistent clamping force throughout the engagement length, solving alignment challenges in multi-material assemblies.
Specification Summary & Compliance
Manufactured to ASME B18.13 specifications with Class 2A thread fit tolerance for reliable interchangeability. Features UNC coarse threads (6-32) with right-hand direction and complete compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The zinc-plated steel construction meets industrial corrosion protection standards while maintaining the specified 60,000 psi tensile strength rating.
