S-91251A094 3-48 x 3/8" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 PSI ensures reliable performance in high-stress industrial applications
• Superior corrosion resistance provided by black-oxide coating on alloy steel for extended service life in demanding environments
• Precision Class 3A thread fit guarantees secure fastening and vibration resistance in critical assemblies
• Optimized hex drive design with 5/64" drive size allows for efficient installation and high torque transmission
• Rockwell C37 hardness rating maintains structural integrity under repeated loading and mechanical stress
• Right-hand coarse UNC threading enables quick assembly and disassembly while preventing cross-threading issues
• Compact 3/8" length with standard socket head profile provides space-saving solutions for confined applications

Professional Applications & Engineering Value

These black-oxide alloy steel socket head cap screws deliver exceptional engineering value in precision manufacturing and heavy-duty applications. The 3-48 UNC coarse thread configuration combined with Class 3A fit ensures superior vibration resistance and load distribution, making them ideal for machinery, automotive components, and electronic enclosures where reliability is critical. The alloy steel construction with 170,000 PSI tensile strength addresses common failure points in high-stress environments, while the black-oxide surface treatment provides enhanced corrosion protection without compromising dimensional accuracy. These socket head screws are particularly valuable in applications requiring frequent maintenance access, thanks to their hex drive design that facilitates easy installation and removal in confined spaces.

Specification Summary & Compliance

Manufactured to ASTM A574 specifications with precision Class 3A thread fit and UNC coarse threading. These socket head cap screws feature exact dimensional compliance with 3-48 thread size, 3/8" length, and 5/64" hex drive. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors. The combination of Rockwell C37 hardness and 170,000 PSI tensile strength guarantees mechanical performance that exceeds industry standards for precision fasteners.