S-90402A144 6-32 x 1/4" ASME B18.13 Steel Pan Head Phillips Screws with External-Tooth Lock Washer
Steel Pan Head Phillips Screws with External-Tooth Lock Washer
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Washer & Nut
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Superior corrosion resistance with zinc-plated steel construction, extending service life in harsh industrial environments.
- Enhanced vibration resistance and secure locking provided by the integrated external-tooth lock washer, preventing loosening under dynamic loads.
- High tensile strength of 60,000 psi and Rockwell B69 hardness ensure reliable performance in demanding mechanical applications.
- Easy installation and removal with the standard Phillips No. 2 drive, reducing assembly time and tool wear.
- Wide compatibility and precise fit due to UNC coarse threads with Class 2A tolerance, ensuring smooth engagement with standard nuts.
- Full threading along the 1/4" length allows for maximum grip and adjustability in various material thicknesses.
- Compliance with ASME B18.13, RoHS 3, and REACH guarantees quality, safety, and environmental standards for global industrial use.
Professional Applications & Engineering Value
This zinc-plated steel pan head screw with an external-tooth lock washer is engineered to address critical issues like vibration-induced loosening and corrosion in industrial assemblies. The coarse UNC thread and Class 2A fit provide excellent holding power in metals and plastics, reducing the risk of cross-threading and ensuring repeatable fastening in production lines. Its fully threaded design and 60,000 psi tensile strength make it ideal for machinery, electrical enclosures, and automotive components where durability and vibration resistance are paramount. The Phillips drive facilitates quick installation, while the zinc plating offers a protective barrier against rust, extending the lifespan of equipment in demanding environments.
Specification Summary & Compliance
This screw features precise UNC 6-32 coarse threads with a Class 2A tolerance for reliable fit, a length of 1/4", and a pan head with integrated external-tooth lock washer. It complies with ASME B18.13 manufacturing standards, ensuring dimensional accuracy and performance. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental compliance for industrial use worldwide.
