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Tweco 21-37: type schematic of a MIG nozzle, not to scale, labelled size 3/8 inSize 3/8 inType schematic, not to scale
Type schematic (not to scale) of a MIG nozzle, labelled with the printed size cited in the specifications below; this part's outside diameter, bore and length are not in our sources.

Tweco 21-37 MIG nozzle

Tweco 21-37 Nozzle, 3/8": size 3/8 in; cross-reference: CM Industries C21-37.

MIG nozzles · All Tweco part numbers

A cylindrical nickel-plated MIG welding nozzle with a blue insulator ring, lying on a white surface
A typical MIG nozzle — not necessarily this part. Photo: “Mig 1” by Victorvs, CC0, via Wikimedia Commons (resized).

Specifications

Size3/8 in

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

Cross-references

PartManufacturerSizeRelationshipEvidence
C21-37CM Industries3/8 inAftermarket replacementSingle source stated by CM Industries; not corroborated

CM Industries prints CM Part # C21-37 against OEM Part # 21-37

Related parts

Sources