S-91251A229 3-48 x 7/16" ASTM A574 Alloy Steel Socket Head Screws
Alloy Steel Socket Head Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Superior corrosion resistance with black-oxide coating, extending service life in demanding industrial environments
- Exceptional mechanical strength with 170,000 psi tensile strength and Rockwell C37 hardness for heavy-duty applications
- Precise Class 3A thread fit ensures secure fastening with minimal vibration loosening in critical assemblies
- Standard hex socket drive (5/64") allows for high-torque installation in confined spaces
- Fully threaded UNC coarse design provides maximum grip length and faster installation compared to fine threads
- Comprehensive compliance with ASTM A574, RoHS 3, and REACH standards for global industrial acceptance
- Optimized dimensional stability with 0.161" head diameter and 7/16" length for consistent performance
Professional Applications & Engineering Value
These black-oxide alloy steel socket head cap screws deliver critical performance advantages in precision engineering applications where high tensile strength and corrosion resistance are paramount. The Class 3A UNC thread fit maintains tight tolerances in vibration-prone equipment, while the fully threaded coarse design enables rapid assembly in production environments. The hex socket drive system provides superior torque transmission compared to standard fasteners, making these industrial screws ideal for machinery, automotive components, and heavy equipment where 170,000 psi tensile strength ensures joint integrity under extreme loads. The black-oxide surface treatment adds an extra layer of protection against environmental degradation.
Specification Summary & Compliance
Manufactured to ASTM A574 specifications with Class 3A thread fit precision and UNC coarse thread profile. Features include 5/64" hex drive, 0.161" head diameter, and 7/16" length. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for global industrial use. Mechanical properties include Rockwell C37 hardness and 170,000 psi tensile strength for reliable performance in demanding applications.
