• 16-3786-31 CMW
  • Sketch for 16-3786-31 CMW

16-3786-31 CMW

Part #: 275-16-3786-31

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Non-Piloted Nut Electrodes are for welding nuts. The part has an insulated, spring loaded pilot that retracts when it makes contact with the upper electrode which prevents damage.

A refractory metal face is made of RWMA Class 11 (75% tungsten, 25% copper) (ASTM 702 C1D) is brazed onto the base material. This face is typically used for welding at higher pressure and heat common with projection welding.

  • The overall length is 1.500 IN
  • The part mounts via 5/8 - 18 threads.
  • The weld face is 1.25 IN
  • The part has a spring loaded insulated pilot for welding a 5/16 (8mm) nut.
  • The diameter of the pin is 0.257 IN
  • The diameter of the pilot is 0.345 IN.


Face Refractory Material RWMA Class 11 - 10W
RWMA Material Type RWMA Class 2 - C18200
Engagement to Holder [S] 5/8 - 18
Overall Length [A] 1.50000
Weld Face Diameter [B] 1.25
Pilot Diameter [J] 0.34500
Pin Diameter [P] 0.2570
Pilot Stickout [L] 0.3750
For Nut Size 5/16 (8mm)
Refractory Material Thickness [I] 0.250
Unit of Measure IN
Spring Included Yes

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