Type schematic (not to scale) of a MIG contact tip, labelled with the printed wire size cited in the specifications below; this part's tip outside diameter is not in our sources.

Tweco 14-40 MIG contact tip

Tweco 14-40 Contact Tip, .040": wire size .040 in; cross-reference: CM Industries C14-40.

MIG contact tips · All Tweco part numbers

A copper MIG welding contact tip with a threaded end and a small wire bore, on a plain grey surface — A typical MIG contact tip — not necessarily this part. Photo: “Mig 2” by Victorvs, CC0, via Wikimedia Commons (resized).

Specifications

Wire size	.040 in

All specifications: Single source printed by CM Industries; not corroborated

Cross-references

	Part	Manufacturer	Wire size	Relationship	Evidence
	C14-40	CM Industries	.040 in	Aftermarket replacement	Single source stated by CM Industries; not corroborated

CM Industries prints CM Part # C14-40 against OEM Part # 14-40

Related parts

Sources

CM Industries — Tweco® Complete Parts ListCM Industries · cross-reference tool · row 18 · supports cross-references, specifications