Jergens 19908 Flange Nut 3/4-10 Unc Black Oxide Steel

Product Description

The JERGENS 19908 is a heavy-duty flange nut designed for secure fastening in structural and mechanical assemblies. Threaded to a 3/4-10 UNC specification with a Class 2B thread fit, it features an integrated 1.625-inch diameter flange that distributes clamping load across a wider bearing surface, reducing the need for a separate washer. The nut stands 1 inch high with 1.25-inch width across flats and a flange height of 0.25 inches. Constructed from low carbon steel with a black oxide finish, it resists corrosion in moderate environments. Licensed mechanics, millwrights, and maintenance technicians working on industrial equipment and structural connections are the primary installers.

This flange nut is suited for general-purpose mechanical and structural fastening applications where a larger bearing surface is required to prevent pull-through or surface damage. It is commonly used in equipment frames, mounting brackets, conveyor assemblies, and general MRO maintenance tasks. The UNC thread standard makes it compatible with standard inch-system fastener hardware widely available in industrial and trade settings. Its black oxide finish offers light corrosion protection in indoor or sheltered environments.

Key Features

• 3/4-10 UNC thread with Class 2B fit for standard inch-system compatibility
• Integrated 1.625-inch flange eliminates the need for a separate flat washer in most applications
• Low carbon steel construction for reliable strength in general mechanical use
• Black oxide finish provides light corrosion resistance and a uniform dark appearance
• Meets TCMA fastener standards
• Compact 1-inch nut height with 1.25-inch width across flats for use with standard wrenches

Compatibility

Designed as a standard UNC inch-system flange nut for use with 3/4-10 threaded bolts, studs, and rods in general mechanical and structural fastening applications.

Installation Notes

Installation should be performed by a qualified mechanic or maintenance technician using an appropriately sized wrench or socket matching the 1.25-inch across-flats dimension. Ensure mating threads are clean, undamaged, and properly lubricated before assembly. Do not exceed the torque capacity of the low carbon steel material. Inspect the flange seating surface for debris that could cause uneven load distribution before tightening.