S-91205A628 3/8"-16 x 1 1/2" ASME B18.3, ASTM A574 Alloy Steel Thread-Locking Socket Head Screws
Alloy Steel Thread-Locking 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 protection with black-oxide coating on alloy steel, extending service life in harsh industrial environments.
- Exceptional vibration resistance through the integrated nylon patch thread locker, preventing loosening under dynamic loads.
- High tensile strength of 170,000 psi ensures reliable performance in heavy-duty and high-stress applications.
- Precise Class 3A thread fit guarantees consistent engagement and reduces the risk of cross-threading during installation.
- Wide temperature tolerance from -70° to 250°F allows use in extreme thermal conditions without compromising integrity.
- Standard hex socket drive provides secure tool engagement and enables high torque application in confined spaces.
- Full threading along the 1-1/2" length offers maximum adjustability and holding power across the entire fastener.
Professional Applications & Engineering Value
Engineered for demanding industrial settings, these socket head cap screws combine black-oxide alloy steel construction with a nylon patch thread locker to address critical challenges like vibration-induced loosening and environmental corrosion. The UNC 3/8"-16 coarse threads with Class 3A fit ensure rapid assembly and reliable clamp load in machinery, automotive subsystems, and heavy equipment. This design minimizes maintenance downtime and enhances structural integrity in applications subjected to high stress and thermal cycling, providing a robust fastening solution that meets rigorous engineering standards.
Specification Summary & Compliance
This screw features UNC 3/8"-16 coarse threads with a precision Class 3A fit and is fully threaded. It conforms to ASME B18.3 specifications and material standard ASTM A574, ensuring dimensional accuracy and performance reliability. The product is certified RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for industrial use.
