S-90402A158 6-32 x 1 1/2" ASME B18.13 Steel Pan Head Phillips Screws with External-Tooth Lock Washer
Steel Pan Head Phillips Screws with External-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 corrosion resistance with zinc-plated steel construction, ensuring long-term durability in harsh industrial environments
- Enhanced vibration resistance through the integrated external-tooth lock washer, preventing loosening under dynamic loads
- High tensile strength of 60,000 psi provides reliable holding power for demanding applications
- Rockwell B69 hardness ensures excellent wear resistance and thread integrity during installation
- Class 2A thread fit with UNC coarse threading enables quick assembly and reliable engagement in various materials
- Fully threaded design maximizes grip length and distributes load evenly across the entire fastener
- Phillips pan head drive offers secure tool engagement and a low-profile, rounded appearance
Professional Applications & Engineering Value
These zinc-plated steel screws with external-tooth lock washers solve critical industrial fastening challenges where vibration-induced loosening and corrosion compromise assembly integrity. The fully threaded 6-32 UNC coarse thread configuration ensures maximum thread engagement in metal, plastic, and composite materials, while the Rockwell B69 hardness maintains thread form during repeated installations. The integrated lock washer bites into mating surfaces, creating permanent resistance to rotational forces in machinery, electrical enclosures, and automotive components. This combination of corrosion-resistant plating and vibration-resistant locking makes these Phillips pan head screws ideal for maintenance-free operation in demanding environments.
Specification Summary & Compliance
Manufactured to ASME B18.13 specifications with Class 2A thread fit tolerance for consistent performance. Features UNC coarse threads (6-32) with right-hand direction and full threading along the 1-1/2" length. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards. The zinc-plated steel construction meets industrial requirements for corrosion resistance while maintaining 60,000 psi tensile strength and Rockwell B69 hardness specifications.
