The Fabricators Choice Since 1970

Piloted Square Four Projection Weld Nut

This square Projection Weld Nut is equipped with four large, uniformly shaped, weld projections that ensure exceptionally strong and reliable welds. The four projections enhance your ability to achieve repeatability of weld strength from nut to nut. It also features a countersunk locating pilot that enables accurate insertion of a mated component into the threaded hole. The pilot is available in two heights (long and short) to accommodate a wide range of metal thicknesses. These industrial fasteners are available from Monroe-JHP Fasteners in a variety of dimensions and thread sizes (inch and metric).


Typical properties of the square, Four Projection Weld Nut


C110 High-Welding Quality, Low Carbon Steel (plain finish unless otherwise specified)


  • Inch: Unified Standard Class 2B ASME B 1.1-2003
  • Metric: ASME B 1.13M-2005

Available thread sizes:

  • Inch Metric
    • 1/4-20 M6 x 1.0
    • 1/4-28 M8 x 1.25
    • 5/16-18 M10 x 1.5
    • 5/16-24 M12 x 1.75
    • 3/8-16
    • 3/8-24
    • 7/16-14
    • 7/16-20
    • 1/2-13
    • 1/2-20
    • 5/8-11*

* Available in long pilot version only

Note: A variety of widths and thicknesses also available.

Application notes:

The four uniform weld projections provide solid contact with the weld surface and help accommodate surfaces that may not be perfectly flat. Location and threading of mated components is assisted by use of the weld nut’s countersunk precision pilot. The pilot also prevents the nut from slipping off center during the welding operation. Two pilot lengths are available (.062” and .094”) to accommodate a wide range of material thicknesses.

This square Four Projection Weld Nut has a long history of use in the automotive industry, and is well suited for a variety of other applications that require a weld nut that will deliver an extremely strong and reliable weld. It provides an outstanding combination of strength and versatility.

Monroe-JHP Fasteners offers expert consultation on the use of these types of industrial fasteners. Our 40 years of active industry experience allows us to provide you with a full range of services. We provide all of our customers with competitive pricing, reliable delivery times, and an efficient shopping/buying experience. Your complete satisfaction is our objective.

Contact us for any industrial fastener requirement you may have. We will work hard to win, and retain, your business!