S-90409A213 3/4"-16 x 3 1/4" IFI 111, SAE J429 High-Strength Grade 8 Steel Flanged Hex Head Screws
High-Strength Grade 8 Steel Flanged 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 for reliable performance in high-stress applications
- Superior corrosion resistance and durability thanks to Grade 8 steel construction and Rockwell C32 hardness
- Secure fastening with reduced vibration loosening achieved through UNF fine threads and Class 2A thread fit
- Easy installation and removal facilitated by the large 1 1/8" external hex head design
- Enhanced stability and load distribution from the integrated flange that eliminates the need for separate washers
- Optimized thread engagement with partial threading that provides strength where needed while reducing material usage
- Compliance with industry standards including SAE J429 and environmental regulations for guaranteed quality and safety
Professional Applications & Engineering Value
This Grade 8 steel hex head screw with 3/4"-16 UNF fine threading delivers critical performance in demanding industrial environments. The partially threaded design concentrates strength at critical stress points while reducing weight and material costs. The integrated flange provides superior load distribution, preventing surface damage and eliminating the need for additional components. With 150,000 PSI tensile strength and Rockwell C32 hardness, this fastener maintains integrity under extreme vibration and heavy loads in construction equipment, machinery assembly, and structural applications. The external hex drive and substantial 1 1/8" head ensure secure tool engagement for efficient installation in confined spaces.
Specification Summary & Compliance
This 3/4"-16 UNF hex head screw features Class 2A thread fit for precise engagement and meets IFI 111/SAE J429 specifications for dimensional accuracy and performance. The fastener is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring environmental responsibility and regulatory adherence for global industrial applications.
