S-92620A333 1 1/4"-7 x 7 1/2" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws
High-Strength Grade 8 Steel 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 load-bearing capacity with 150,000 PSI tensile strength, ideal for high-stress industrial assemblies.
- Superior corrosion resistance due to zinc yellow-chromate plating, extending service life in harsh environments.
- High hardness and durability from Rockwell C33 rating, minimizing wear and deformation under heavy use.
- Reliable coarse threading with UNC 1-1/4"-7 and Class 2A fit for quick installation and vibration resistance.
- Robust external hex drive and large 1 7/8" head for easy tightening with standard tools, reducing assembly time.
- Optimized partial threading on a 7-1/2" length, providing strong grip where needed without unnecessary weight.
- Compliance with major standards including ASME B18.2.1 and SAE J429, ensuring consistent quality and interchangeability.
Professional Applications & Engineering Value
This Grade 8 hex head screw is engineered for demanding applications where failure is not an option. The steel material and zinc yellow-chromate plating combat rust and chemical exposure in industries like construction, heavy machinery, and infrastructure. Its coarse UNC thread resists loosening from vibrations, common in equipment and structural frames. With a 150,000 PSI tensile strength and Rockwell C33 hardness, it handles extreme loads without stripping or shearing, reducing maintenance costs and downtime. The external hex drive allows for high torque application, ensuring secure fastening in tight spaces. Ideal for bolting large beams, industrial mounts, or automotive components, this screw delivers reliability where exceptional strength and longevity are critical.
Specification Summary & Compliance
This fastener adheres to Class 2A thread fit for consistent engagement and meets ASME B18.2.1 and SAE J429 specifications. It is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring environmental safety and regulatory acceptance in global markets.
