Value Collection 36660 Hex Nut 1-8 Unc A194 Grade 2H

Product Description

The VALUE COLLECTION 36660 is a heavy hex nut threaded to a 1-8 UNC specification and manufactured from A194 Grade 2H carbon steel with a bright, uncoated finish. It carries a right-hand thread and conforms to ASME B1.1 and ASME B18.2.2 dimensional and tolerance standards. The 2B thread fit class ensures reliable engagement across standard external threads. With a Rockwell C24-35 hardness rating, this nut is suited for high-strength bolting applications where consistent clamp load and resistance to loosening under load are required. Licensed tradespeople and industrial maintenance professionals working on structural, pressure vessel, or heavy mechanical assemblies will find this nut meets demanding torque and load requirements.

This hex nut is commonly used in heavy industrial, structural, and pressure vessel bolting applications. A194 Grade 2H nuts are frequently paired with A193 Grade B7 studs and bolts in piping flanges, pressure equipment, and structural connections. The uncoated finish makes it suitable for applications where a coating or plating is specified separately or where bare steel is acceptable per the job specification. It is installed by pipefitters, millwrights, ironworkers, and mechanical contractors working to ASME or equivalent standards.

Key Features

• A194 Grade 2H carbon steel construction with Rockwell C24-35 hardness for high-strength bolting
• 1-8 UNC right-hand thread with 2B fit class for standard external thread engagement
• 1.625 inches (1-5/8 inches) width across flats for use with standard heavy hex tooling
• 63/64 inch height providing full thread engagement depth
• Bright, uncoated finish — no secondary coating process required before installation
• Conforms to ASME B1.1 and ASME B18.2.2 dimensional standards

Compatibility

Designed as an OEM-style heavy hex nut for use with 1-inch diameter UNC-threaded fasteners in high-strength bolting assemblies conforming to ASME B18.2.2 standards.

Installation Notes

Installation is performed by qualified pipefitters, ironworkers, or mechanical contractors following applicable ASME, AISC, or job-specific torque and bolting procedures. Always confirm stud or bolt grade compatibility before assembly — A194 Grade 2H nuts are most commonly specified with A193 Grade B7 or equivalent high-strength threaded fasteners. Clean and inspect threads for damage before assembly. Follow the applicable code or engineering specification for lubrication, torque sequence, and final clamp load verification.