S-90403A150 6-32 x 5/8" 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 clamping force 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 for efficient installation and reduced cam-out risk
- Reliable thread performance through Class 2A UNC coarse threads ensuring consistent mating and assembly
- High mechanical strength with 60,000 psi tensile strength and Rockwell B69 hardness for demanding applications
- Permanent fastening security with fully threaded design and lock washer combination preventing loosening
- Standardized compatibility with pan head profile meeting ASME B18.13 specifications for interchangeability
Professional Applications & Engineering Value
These zinc-plated steel screws with internal-tooth lock washers provide critical vibration-resistant fastening solutions for industrial equipment, machinery assemblies, and electrical enclosures. The combination of UNC coarse threads and Class 2A thread fit ensures rapid installation while maintaining precise tolerances. The Phillips pan head design offers low-profile securement with excellent drive transfer, while the integrated lock washer eliminates the need for separate anti-vibration components. Engineered with 60,000 psi tensile strength, these fully threaded fasteners deliver reliable performance in high-stress applications where vibration-induced loosening compromises equipment integrity and safety.
Specification Summary & Compliance
This 6-32 x 5/8" screw features UNC coarse threads with Class 2A thread fit tolerances and complete threading along the shank. Manufacturing complies with ASME B18.13 specifications for dimensional accuracy and performance. The product meets RoHS 3 (2015/863/EU) compliance for hazardous substance restrictions and REACH (EC 1907/2006) requirements for chemical safety, ensuring environmental regulatory adherence for industrial applications.
