S-91735A117 4-40 x 1" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws
Stainless Steel Pan Head Phillips 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 from 316 Stainless Steel with passivated finish, ideal for harsh industrial and marine environments
- High tensile strength of 80,000 psi ensures reliable fastening under demanding mechanical loads
- Class 2A thread fit with UNC coarse threading provides smooth installation and vibration resistance
- Fully threaded design offers maximum grip and uniform load distribution across the entire length
- Pan head profile with No. 1 Phillips drive enables secure tool engagement and flush mounting
- Compliance with ASME B18.6.3, RoHS 3, and REACH guarantees quality and environmental safety for global supply chains
- Rockwell B85 hardness maintains structural integrity and resists wear over repeated use
Professional Applications & Engineering Value
These 4-40 UNC rounded head Phillips screws in 316 Stainless Steel address critical challenges in industrial assembly, where corrosion and mechanical stress compromise fastener longevity. The passivated finish enhances surface durability against chemicals and moisture, while the coarse thread design prevents loosening in high-vibration applications like machinery, electrical enclosures, and automotive components. With a fully threaded construction and Class 2A fit, they ensure precise alignment and consistent clamping force, reducing installation errors. Ideal for OEM and MRO uses, these screws meet rigorous standards for performance in demanding sectors including aerospace, marine, and chemical processing.
Specification Summary & Compliance
This product adheres to ASME B18.6.3 specifications for dimensional accuracy, featuring a Class 2A thread fit, UNC coarse threads, and a 1" length. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring no restricted substances are used. The manufacturing process guarantees consistent 80,000 psi tensile strength and Rockwell B85 hardness, supporting reliable performance in regulated industrial environments.
