S-90403A155 6-32 x 1 1/4" 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 clamping force under dynamic loads
- Enhanced corrosion protection through zinc-plated steel construction for extended service life in demanding environments
- High-strength performance with 60,000 psi tensile strength and Rockwell B69 hardness for reliable load-bearing capability
- Secure installation and removal with No. 2 Phillips drive that provides positive engagement and reduces cam-out risk
- Optimized thread engagement through Class 2A UNC coarse threads ensuring consistent fastening in various materials
- Complete thread coverage with fully threaded design for maximum grip length and holding power
- Industry-standard compatibility meeting ASME B18.13 specifications for reliable 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 60,000 psi tensile strength and Rockwell B69 hardness ensures reliable performance under mechanical stress, while the Class 2A UNC coarse threads facilitate quick installation in various substrates. The pan head design with integrated lock washer eliminates the need for separate washers, reducing assembly time and preventing loosening in high-vibration applications. These fully threaded screws are engineered to maintain clamping force in demanding environments where secure, long-lasting fastening is essential for operational safety and equipment reliability.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2A thread fit and UNC coarse threads (6-32 x 1-1/4"). Meets ASME B18.13 specifications for dimensional accuracy and performance. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Features include: Phillips No. 2 drive, right-hand thread direction, fully threaded design, and zinc-plated steel construction throughout both screw and integrated lock washer components.
