S-90124A624 3/8"-16 x 1" ASME B18.2.1, SAE J429 Steel Wire-Lockable Hex Head Screws
Steel Wire-Lockable Hex 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 120,000 psi ensures reliable performance in high-stress industrial applications, reducing the risk of fastener failure.
- Zinc-plated steel construction provides superior corrosion resistance, extending service life in harsh environments.
- Grade 5 classification guarantees consistent hardness (Rockwell C25) and mechanical properties for dependable load-bearing capability.
- Coarse UNC threads with Class 2A fit enable quick assembly and secure fastening, minimizing cross-threading risks.
- External hex drive design allows for high-torque installation using standard tools, improving installation efficiency.
- Full threading along the 1" length offers versatile engagement depth for various material thicknesses.
- Compliance with ASME B18.2.1 and SAE J429 ensures dimensional accuracy and interoperability with standardized components.
Professional Applications & Engineering Value
This Grade 5 zinc-plated steel hex head screw is engineered to address critical challenges in heavy-duty assembly, such as vibration resistance and environmental durability. The coarse UNC thread and Class 2A fit provide excellent grip in metals and composites, preventing loosening under dynamic loads. With a tensile strength of 120,000 psi and Rockwell C25 hardness, it withstands extreme mechanical stress in construction, machinery, and automotive frameworks. The zinc plating acts as a sacrificial layer, combating rust in outdoor or humid settings, while the external hex drive facilitates secure tightening in confined spaces. Ideal for structural joints, equipment mounts, and industrial fixtures, this screw ensures long-term reliability where fastener integrity is non-negotiable.
Specification Summary & Compliance
This screw adheres to Class 2A thread tolerances per UNC standards, with a 3/8"-16 thread size and 1" length. Manufacturing follows ASME B18.2.1 and SAE J429 specifications for dimensional consistency. It is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental regulations for hazardous substance restrictions.
