S-91286A206 3/8"-16 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
- Maximum load-bearing capacity with 150,000 psi tensile strength and Rockwell C33 hardness for reliable performance in high-stress environments.
- Superior corrosion resistance provided by the zinc-flake coating, extending service life in harsh industrial conditions.
- Easy installation and removal with an external hex drive and coarse UNC threads, reducing assembly time and effort.
- Precise thread engagement ensured by Class 2A thread fit, minimizing the risk of cross-threading and improving joint integrity.
- Optimized for heavy-duty applications with a Grade 8 strength rating and 1 3/4" length, offering robust fastening in machinery and structural assemblies.
- Compliance with industry standards including ASME B18.2.1 and SAE J429, guaranteeing consistent quality and interchangeability.
- Environmental and safety adherence through RoHS 3 and REACH compliance, ensuring safe use in regulated industries.
Professional Applications & Engineering Value
This Grade 8 hex head screw is engineered to address critical challenges in heavy-duty industrial settings, such as vibration-induced loosening and corrosion in demanding environments. The zinc-flake coated steel construction provides a durable barrier against moisture and chemicals, significantly reducing maintenance needs. With a 3/8"-16 UNC coarse thread and partial threading, it ensures secure fastening in materials prone to stripping, while the external hex drive allows for high torque application without slippage. Ideal for construction equipment, automotive assemblies, and machinery frames, this screw delivers reliable performance where failure is not an option, backed by its high tensile strength and precise Class 2A thread fit.
Specification Summary & Compliance
The screw adheres to Class 2A thread fit tolerances for consistent engagement and is manufactured in accordance with ASME B18.2.1 and SAE J429 standards. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions are met for industrial use.
