S-91257A675 7/16"-14 x 1 3/4" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws
High-Strength Grade 8 Steel Hex 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 load-bearing capacity with 150,000 psi tensile strength for reliable performance in high-stress applications
- Superior corrosion resistance provided by zinc yellow-chromate plating, extending service life in harsh environments
- Optimized thread engagement with Class 2A thread fit ensuring consistent, secure fastening connections
- Enhanced durability from Rockwell C33 hardness, maintaining structural integrity under repeated stress
- Easy installation and removal with external hex drive design for efficient maintenance operations
- Reduced cross-threading risk through UNC coarse threading, enabling faster assembly in industrial settings
- Compliance with major industry standards including ASME B18.2.1 and SAE J429 for guaranteed quality and interoperability
Professional Applications & Engineering Value
These Grade 8 hex head screws deliver critical engineering solutions where high tensile strength and corrosion resistance are paramount. The zinc yellow-chromate plated steel construction protects against environmental degradation in demanding applications such as heavy machinery assembly, structural steel connections, and industrial equipment manufacturing. The 7/16"-14 UNC coarse threading provides superior resistance to vibration loosening while the partially threaded design concentrates clamping force precisely where needed. These industrial fasteners solve common engineering challenges including joint integrity maintenance under dynamic loads and long-term performance in corrosive environments, making them ideal for construction and machinery applications requiring dependable, high-strength fastening solutions.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2A thread fit tolerance and UNC coarse threading specifications. These screws conform to ASME B18.2.1 and SAE J429 manufacturing standards, ensuring consistent quality and performance. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting international environmental and safety regulations for industrial components.
