S-91253A812 5/8"-11 x 4 1/2" ASTM F835 Alloy Steel Hex Drive Flat Head Screws
Alloy Steel Hex Drive Flat 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 tensile strength of 130,000 psi ensures reliable performance in heavy-load applications, reducing failure risks.
- Black-oxide coating on alloy steel provides enhanced corrosion resistance and durability in harsh industrial environments.
- Class 3A thread fit delivers precise, secure fastening with minimal play, ideal for vibration-prone settings.
- Partially threaded design with UNC coarse spacing allows for easier alignment and faster installation in coarse materials.
- 82° countersink angle and flat head enables flush mounting for a smooth, professional finish in countersunk holes.
- 3/8" hex drive offers superior torque transmission and slip-resistant engagement during assembly.
- Compliance with ASTM F835, RoHS 3, and REACH guarantees material safety and meets rigorous industrial standards.
Professional Applications & Engineering Value
Engineered for demanding industrial and construction applications, this 5/8"-11 UNC flat head screw in black-oxide alloy steel addresses critical challenges like vibration loosening and environmental wear. The coarse thread spacing and Class 3A thread fit ensure tight, reliable connections in structural frameworks, machinery, and heavy equipment, where precision and strength are paramount. Its partially threaded shank minimizes thread damage during installation, while the 82° countersink angle provides a seamless fit in pre-drilled holes, reducing protrusion risks. With high tensile strength and corrosion-resistant surface treatment, it excels in automotive, manufacturing, and infrastructure projects, delivering long-term performance under stress.
Specification Summary & Compliance
This screw adheres to Class 3A thread fit for superior dimensional accuracy and UNC coarse thread standards. Manufactured in compliance with ASTM F835 specifications, it ensures consistent quality and performance. The product is fully RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, confirming its safety and environmental responsibility for industrial use.
