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Brass gas hose coupler with 5/8-18 RH female threads on both ends

Miller - Weldcraft

Miller - Weldcraft 11N17 Gas Coupler 5/8 In-18 RH

SKU CH-ETKW-AHN1S

Connects gas hoses to Weldcraft TIG torches using 5/8 in-18 RH female fittings on both ends

  • TypeTools
  • Secure gas delivery with 5/8 In-18 RH female fittings
  • Broad torch compatibility across 18, 20, 24 and 25 series
  • Right-hand thread design ensures leak-free TIG welding connections
  • Durable brass construction withstands high-heat workshop environments
  • California Proposition 65 compliance disclosed for user safety awareness

Miller Weldcraft 11N17 Coupler Purpose

The Miller Weldcraft 11N17 gas coupler connects shielding-gas hoses on compatible Weldcraft TIG torches. It suits welders who need a direct replacement fitting for existing Series 18, 20, 24W, 25 and W-series torch models. This part does not serve operators using torches outside the listed compatibility range or those requiring a different thread standard.

Brass Construction and RH Thread Detail

The coupler body uses brass construction with 5/8 in-18 right-hand threads on both female ends for secure hose-to-hose joining. Right-hand threading matches the standard orientation on the referenced torch series so installation follows normal tightening direction. The design is not intended for left-hand thread systems or for adapting dissimilar thread sizes.

Sealing Performance in TIG Service

Properly tightened joints maintain gas flow without leakage during GTAW operation at typical shop pressures. Brass resists corrosion from common shielding gases so the seal remains reliable over repeated connect-disconnect cycles. No pressure rating or flow coefficient is published, so the coupler should be verified against the specific torch and regulator setup before production use.

Highlights

  • Secure gas delivery with 5/8 In-18 RH female fittings
  • Broad torch compatibility across 18, 20, 24 and 25 series
  • Right-hand thread design ensures leak-free TIG welding connections
  • Durable brass construction withstands high-heat workshop environments
  • California Proposition 65 compliance disclosed for user safety awareness

Specifications

BrandMILLER ELECTRIC
TypeTools

Questions about this item

What thread standard does the 5/8 in-18 RH coupler use?

The coupler uses a 5/8 in-18 right-hand thread standard for both hose fitting connections.

Which torch series and models is the 11N17 coupler compatible with?

It fits Series 18, 20, 20F, 24W, 25, W-125, W-180, W-200, W-225, W-250, W-350 and Models 18, 18-90, 18HP, 18P, 18V, 20FHD, 20P, 24, 24FHD, 24FVHD, 24HP, 24V, 25.

How do you install the gas coupler and what step is often missed?

Thread the female RH fittings onto the matching male hose ends by hand, then tighten with a wrench; the step often missed is leak-testing the joint with soapy water before welding.

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