S-90403A829 10-32 x 1/2" 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 demanding environments
- Optimized installation efficiency with Phillips No. 2 drive that provides reliable torque transfer and prevents cam-out
- Exceptional load-bearing capacity with 60,000 psi tensile strength and Rockwell B69 hardness for high-stress applications
- Precise thread engagement through Class 2A UNF fine threads ensuring consistent clamping force and reduced loosening
- Full-thread design maximizes grip length and distribution of stress along the entire fastener
- Reliable regulatory compliance meeting ASME B18.13 specifications and environmental standards (RoHS 3/REACH)
Professional Applications & Engineering Value
These 10-32 UNF zinc-plated steel screws with internal-tooth lock washers address critical vibration-induced loosening in industrial assemblies. The pan head design with Phillips drive provides optimal surface contact and controlled installation torque, while the fine UNF threads deliver superior tension accuracy in precision equipment. The zinc-plated steel construction resists environmental degradation, making these fully threaded screws ideal for automotive components, electrical enclosures, and machinery where vibration resistance and 60,000 psi tensile strength are paramount. The integrated locking mechanism eliminates the need for separate anti-vibration components, streamlining assembly processes.
Specification Summary & Compliance
Manufactured to Class 2A thread fit tolerances with UNF fine threading (10-32) and full compliance with ASME B18.13 mechanical standards. These zinc-plated steel screws meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in regulated industries. The 1/2" length with fully threaded design maintains consistent performance across applications requiring precise fastener engagement.
