S-90283A115 4-40 x 1" ASME B18.6.3 Steel Pan Head Slotted Screws
Steel Pan Head Slotted Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with zinc-plated steel construction, extending service life in harsh industrial environments
- High tensile strength of 60,000 psi ensures reliable load-bearing capacity for demanding mechanical applications
- Rockwell B60 hardness provides excellent wear resistance and maintains thread integrity under vibration
- Class 2A thread fit offers optimal assembly clearance while maintaining secure fastening performance
- Fully threaded design allows for maximum grip length and uniform stress distribution along the entire engagement
- Slotted pan head design enables quick installation with standard screwdrivers while providing a low-profile finished appearance
- Comprehensive regulatory compliance including ASME B18.6.3, RoHS 3, and REACH ensures safety and environmental responsibility
Professional Applications & Engineering Value
These 4-40 UNC zinc-plated steel rounded head screws deliver exceptional performance in industrial assembly applications where corrosion resistance and mechanical reliability are critical. The zinc-plated steel construction provides essential protection against oxidation and environmental degradation, while the Rockwell B60 hardness ensures the slotted drive maintains integrity during repeated installation and removal cycles. The coarse UNC thread with Class 2A fit facilitates quick assembly in production environments while preventing cross-threading issues. These fully threaded pan head screws are particularly valuable in electronics enclosures, machinery guards, and automotive components where consistent tensile strength and regulatory compliance are mandatory for operational safety and longevity.
Specification Summary & Compliance
Manufactured to precise inch system dimensions with Class 2A thread fit tolerance per UNC standards, these screws feature a 1" length with fully threaded coarse pitch configuration. The product meets ASME B18.6.3 manufacturing specifications for dimensional accuracy and performance. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental responsibility and safe use in industrial applications across regulated markets.
