S-91253A838 3/4"-10 x 1 1/4" ASTM F835 Alloy Steel Hex Drive Flat Head Screws
Alloy Steel Hex Drive Flat 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
- Superior corrosion resistance from the black-oxide finish, extending service life in harsh industrial environments.
- Exceptional tensile strength of 130,000 psi ensures reliable performance under high-stress and heavy-duty applications.
- Precise Class 3A thread fit provides secure, vibration-resistant fastening with minimal risk of loosening.
- Fully threaded coarse (UNC) design offers maximum grip and load distribution across the entire length.
- High hardness (Rockwell C37) enhances durability and resistance to wear and deformation.
- 1/2" hex drive allows for high-torque installation with standard tools, speeding up assembly.
- Compliance with ASTM F835, RoHS 3, and REACH guarantees material quality and environmental safety for global projects.
Professional Applications & Engineering Value
Engineered for demanding industrial settings, these 3/4"-10 UNC flat head screws in black-oxide alloy steel address critical challenges like corrosion, vibration, and high mechanical stress. The fully threaded coarse spacing and Class 3A fit ensure tight, secure connections in heavy machinery, structural frameworks, and equipment subjected to dynamic loads. The 82° countersink angle allows for a flush finish, reducing protrusion risks. Ideal for construction, automotive, and manufacturing applications, these screws deliver long-term reliability by resisting environmental degradation and maintaining 130,000 psi tensile strength, minimizing maintenance and replacement costs.
Specification Summary & Compliance
This screw features a 3/4"-10 UNC coarse thread with Class 3A precision fit for accurate assembly. Dimensions include a 1 1/4" length, 1.438" head diameter, and standard 82° flat head profile. Manufactured to ASTM F835 specifications, it ensures consistent quality and performance. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting safe and sustainable use in various industries.
