S-92327A816 5/16"-18 x 1" ASME B18.2.1, SAE J429 Square Head Screws
Square 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
- Exceptional corrosion resistance with zinc yellow-chromate plating, extending service life in harsh industrial environments
- High tensile strength of 120,000 PSI ensures reliable performance under heavy loads and vibration
- Precise Class 3A thread fit provides superior engagement and reduces the risk of cross-threading during installation
- Coarse UNC threading offers faster assembly and better performance in materials prone to galling or debris
- External square drive design allows for high-torque application with standard tools, minimizing slippage
- Full threading along the 1" length enables adjustable positioning and secure fastening in various material thicknesses
- SAE Grade 5 certification guarantees consistent quality and mechanical properties for critical applications
Professional Applications & Engineering Value
This 5/16"-18 UNC square head screw is engineered to address common industrial challenges such as joint failure, corrosion-induced degradation, and assembly inefficiency. Constructed from high-grade steel and finished with zinc yellow-chromate plating, it provides robust protection against rust and chemical exposure in outdoor or high-moisture settings like construction equipment, agricultural machinery, and structural frameworks. The coarse thread design ensures quick installation and reliable hold in soft materials or where debris accumulation is a concern, while the external square drive accommodates high torque requirements without stripping. With a tensile strength of 120,000 PSI and Rockwell C25 hardness, it maintains integrity under dynamic loads, making it ideal for heavy-duty bolting applications where safety and durability are paramount.
Specification Summary & Compliance
This fastener adheres to Unified Standard Class 3A thread tolerances for precise fit and interchangeability. It conforms to ASME B18.2.1 and SAE J429 specifications, ensuring dimensional accuracy and mechanical performance. The zinc yellow-chromate plating meets industry standards for corrosion protection, and the product is manufactured in compliance with relevant regulations for industrial use, providing assurance of quality and reliability in professional applications.
