S-90128A863 5-40 x 3/4" ASTM A574 Alloy Steel Socket Head Screws
Alloy Steel Socket Head 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
- Exceptional tensile strength of 170,000 PSI for reliable performance in high-stress applications
- Superior corrosion resistance with zinc-plated alloy steel construction for extended service life
- Precision Class 3A thread fit ensures secure fastening and vibration resistance
- Standard hex drive design with 3/32" drive size for easy installation and removal
- Fully threaded right-hand UNC coarse thread provides maximum grip and load distribution
- Rockwell C37 hardness rating maintains structural integrity under heavy loads
- Comprehensive compliance with ASTM A574, RoHS 3, and REACH environmental standards
Professional Applications & Engineering Value
These 5-40 UNC socket head cap screws deliver critical performance advantages for industrial assembly applications where high tensile strength and corrosion resistance are paramount. The zinc-plated alloy steel construction provides superior protection against environmental degradation, while the Class 3A thread fit ensures precise engagement and vibration resistance in machinery, automotive components, and precision equipment. The fully threaded coarse UNC design offers optimal load distribution across the entire 3/4" length, making these socket head cap screws ideal for applications requiring maximum clamping force and reliability. The standard hex drive configuration facilitates efficient installation in confined spaces common in industrial settings.
Specification Summary & Compliance
This 5-40 UNC socket head cap screw features precision Class 3A thread fit with coarse thread spacing and right-hand thread direction. Manufactured to ASTM A574 specifications with dimensional accuracy in the inch system, including 0.125" thread diameter and 0.205" head diameter. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial applications while maintaining the specified mechanical properties including 170,000 PSI tensile strength and Rockwell C37 hardness.
