Value Collection MSC-67481804 Hex Nut 1-1/4-7 Unc

Product Description

The VALUE COLLECTION MSC-67481804 is a heavy hex nut rated to ASTM A194 Grade 2H, designed for high-strength bolted assemblies in industrial and construction applications. Sized at 1-1/4-7 UNC with a right-hand thread and a 2B fit class, this nut meets ASME B1.1 and ASME B18.2.2 dimensional standards. The uncoated bright finish leaves the steel surface bare for applications where galvanic compatibility or post-installation coating is required. Hardness is Rockwell C24-35, giving it the mechanical strength required for pressure vessel flanges, structural connections, and heavy equipment fastening. Installers in industrial maintenance, pipefitting, and structural steel trades specify A194 Grade 2H nuts for pairing with high-strength bolting.

This hex nut is used in heavy industrial settings where bolted flange joints, pipe hangers, structural steel connections, and pressure-rated assemblies require a nut that meets published ASME fastener standards. The 1-1/4-7 UNC thread size is common in large-diameter pipe flange bolting and structural steel work. Typical installers include pipefitters, millwrights, ironworkers, and industrial maintenance mechanics working on process piping, pressure equipment, and steel structure assemblies.

Key Features

• A194 Grade 2H steel construction meets ASME B18.2.2 heavy hex nut dimensional standards
• 1-1/4-7 UNC right-hand thread with 2B fit class for standard bolt engagement
• Rockwell C24-35 hardness rating suitable for high-load and pressure-rated joints
• Bright uncoated finish compatible with post-installation coating or galvanic isolation requirements
• 2 inch width across flats; 1-7/32 inch height for standard wrench and socket fit
• Conforms to ASME B1.1 and ASME B18.2.2 fastener standards

Compatibility

Designed as an OEM-style replacement or service nut for 1-1/4-7 UNC heavy hex bolting applications conforming to ASME B18.2.2 standards. Pairs with A193 Grade B7 or equivalent high-strength stud bolts used in pressure vessel and structural steel assemblies.

Installation Notes

Installation is performed by qualified pipefitters, ironworkers, or industrial mechanics in accordance with applicable ASME, AISC, or process-specific torque and bolt-up procedures. De-energize or depressurize any system before replacing fasteners on live flanges or structural joints. Use calibrated torque wrenches and follow the applicable flange bolt-up sequence to achieve uniform gasket load. Do not mix nut grades or coatings within a single bolted joint unless the applicable engineering specification permits it.