BigBoltNut is a trusted manufacturer, supplier, and exporter of ASME B1.1 (Unified Inch Screw Thread) fasteners in India. Also known as ANSI B1.1, this standard is based on inch modules and defines the thread shape, series, class, allowance, and tolerance for unified screw threads.
We specialize in high-performance ASME B1.1-compliant stud bolts and heavy hex bolts, designed for demanding industrial applications. Our fasteners meet stringent thread dimension standards, ensuring durability and precision.
Our Product Range:
Stud Bolts – Available in fully threaded, double-ended, and reduced shank designs, manufactured from high-quality stainless steel, carbon steel, and alloy steel grades, including 8.8, 10.9, 12.9, SS304, SS316, SS316L, SS316 S31, B7, L7, 8M, and B8.
Hex Head Bolts – Manufactured as per ASME B18.2.1 standards, including hex head bolts and hex cap screws, ensuring superior strength and reliability.
Nuts & Washers – Produced to complement our fasteners, ensuring ASME compliance and secure fastening solutions.
Thread Combinations as per ASME B1.1:
UN (Unified National) – Standard threading for internal and external applications.
Unified National Rounded Root – A rounded root profile for enhanced fatigue resistance.
UNJ Threads – Designed for high-stress environments, featuring an expanded root radius for superior fatigue strength.
At BigBoltNut, we are committed to providing high-precision industrial fasteners for various sectors, including construction, oil & gas, marine, power plants, and heavy engineering industries.
For bulk inquiries or custom orders, contact BigBoltNut, the leading ASME B1.1 fastener manufacturer in India.