S-90044A256 5-44 x 1" 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
- Superior corrosion resistance with black-oxide coating for extended service life in demanding environments
- Precise Class 3A thread fit ensures reliable, vibration-resistant connections in critical assemblies
- Exceptional 170,000 psi tensile strength provides high clamping force for heavy-duty applications
- Fine thread spacing delivers better adjustment control and superior load distribution
- Compact hex drive design allows installation in confined spaces with standard 3/32" tools
- Rockwell C37 hardness maintains thread integrity and prevents stripping during repeated use
- Environmental compliance meets RoHS 3 and REACH standards for global manufacturing requirements
Professional Applications & Engineering Value
These black-oxide alloy steel socket head cap screws address critical engineering challenges in precision equipment and heavy machinery. The Class 3A UNF fine threads provide superior vibration resistance compared to coarse threads, making them ideal for applications subject to dynamic loads or thermal cycling. The partially threaded design concentrates clamping force exactly where needed, while the socket head configuration enables high-torque installation in space-constrained assemblies. The combination of 170,000 psi tensile strength and Rockwell C37 hardness ensures these fasteners maintain preload in high-stress applications without deformation, reducing maintenance frequency and improving equipment reliability across automotive, aerospace, and industrial machinery sectors.
Specification Summary & Compliance
Manufactured to ASTM A574 specifications with Class 3A thread fit for precision applications. Features 5-44 UNF fine threads with minimum 3/4" thread length and standard right-hand threading. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for use in global markets. The black-oxide surface treatment provides additional corrosion protection while maintaining dimensional accuracy across all critical parameters.
