Description
What is a Nozzle Insulator
A nozzle insulator (also called “threaded insulator,” “coarse-thread insulator,” etc.) is a heat‐resistant, electrically insulating component used in MIG welding guns. It sits between the conduct tube (or contact tip assembly) and the outer nozzle. Its purposes include:
-
Preventing heat transfer from the nozzle to other internal parts
-
Helping maintain correct electrical insulation so the weld arc behaves properly
-
Withstanding mechanical and thermal stress, spatter, etc.
#4 / 34CT Nozzle Insulator (Tweco Classic No. 4 / 34 Series Coarse Thread)
Common Names / References:
-
34CT #4
-
TWC 34CT #4
-
Tweco style / coarse thread insulator for #4 gun
Features & Typical Specifications:
From various suppliers:
| Attribute | Details |
|---|---|
| Material | Usually a heat‐resistant plastic / insulating material, sometimes coppered heavy duty versions for better heat handling. |
| Compatibility | Fits Tweco Classic #4 MIG guns (“34 series” coarse‐thread). Also with parts labeled 24CT / 34CT in many consumables catalogs. |
| Duty / Use Case | Medium to heavy duty welding (especially where higher currents, spatter, heat are factors). Used with solid or flux‐cored wire, steel, stainless steel, etc. |
| Size / Dimensions (approx.) | Examples: ~2.7 cm width, ~5.0 cm length, height ~2.7 cm; weight around 0.09 kg in one supplier’s specs. |
| Special Versions | “Heavy duty” insulators (more robust, better materials) exist. Some are two‐piece fixed gas‐nozzle in combination, optimized for more demanding work. |
Reviews
There are no reviews yet.