The Fabricators Choice Since 1970

Piloted Square Projection (WP) Weld Nut

This Projection Weld Nut has a square shape and is well suited for use in through-hole applications. It features a precision pilot that facilitates quick and accurate loading into its designated sheet-hole location. This weld nut features four precision weld projections that enhance the strength and uniformity of the final weld. These industrial fasteners are offered by Monroe-JHP Fasteners in a wide assortment of dimensions and thread sizes (inch and metric).


Typical Properties of the Square Projection Weld Nut


C1010 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 size:

  • Inch Metric
    • #6-32 M3.5 x 0.5
    • #8-32 M4 x 0.7
    • #10-24 M5 x 0.8
    • #10-32 M6 x 1.0
    • 1/4-20 M8 x 1.25
    • 5/16-18

Note: A variety of widths and thicknesses also available.

Application Notes

The Square Projection Weld Nut is counter-sunk on both sides to enable quick and accurate engagement of the mating component onto the weld nut threads. This weld nut has rounded corners and can therefore be used within confined spaces. A strong uniform weld is ensured via the nut’s unique incorporation of four precision weld projections.

This Square Projection Weld Nut is extremely versatile and will provide a robust spot weld connection in a wide range of applications and conditions. This weld nut is easy to use and works well in a wide range of production environments.

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.

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