S-90403A151 6-32 x 3/4" 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
- Superior vibration resistance with integrated internal-tooth lock washer that maintains secure fastening under dynamic loads
- Enhanced corrosion protection through zinc-plated steel construction for extended service life in harsh environments
- Optimized drive engagement with Phillips No. 2 drive design providing reliable torque transmission and reduced cam-out
- Maximum thread engagement through fully threaded UNC coarse threading ensuring strong holding power in various materials
- Exceptional mechanical strength with 60,000 psi tensile strength and Rockwell B69 hardness for heavy-duty applications
- Consistent installation performance with Class 2A thread fit maintaining precise tolerances and smooth assembly
- Secure anti-loosening protection through the pan head design with integrated lock washer preventing back-out in vibrating equipment
Professional Applications & Engineering Value
These zinc-plated steel screws with internal-tooth lock washers provide critical solutions for industrial applications where vibration-induced loosening compromises assembly integrity. The combination of UNC coarse threading and fully threaded design ensures maximum pull-out resistance in metal, plastic, and composite materials, while the Phillips pan head configuration offers flush mounting with superior drive engagement. Engineered to withstand demanding conditions, these 6-32 x 3/4" screws deliver reliable performance in machinery, electrical enclosures, automotive components, and industrial equipment where consistent clamping force and vibration resistance are essential for operational safety and reduced maintenance intervals.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit tolerances with UNC coarse threading (6-32 thread size) and compliant with ASME B18.13 specifications. These screws meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance standards. The zinc-plated steel construction provides corrosion resistance while maintaining the specified 60,000 psi tensile strength and Rockwell B69 hardness for consistent mechanical performance across industrial applications.
