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Stainless Steel Compression Fittings & Barb Compression Fittings

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STC and All Air  provide a complete line of Stainless Steel compression fittings and barb compression fittings, including both inch and metric sizes.

Product Lineup

Compression Fittings

Show Product Specifications (Group 1)

Sizes Available (Standard) Sizes Available (Metric)
Branch Tee STC Branch Tee Tube OD 1/8″; Thread NPT1/8″;
Tube OD 1/8″; Thread NPT1/4″;
Tube OD 1/4″; Thread NPT1/8″;
Tube OD 1/4″; Thread NPT1/4″;
Tube OD 5/16″; Thread NPT1/8″;
Tube OD 5/16″; Thread NPT1/4″;
Tube OD 5/16″; Thread NPT3/8″;
Tube OD 3/8″; Thread NPT1/4″;
Tube OD 3/8″; Thread NPT3/8″;
Tube OD 1/2″; Thread NPT1/4″;
Tube OD 1/2″; Thread NPT3/8″;
Tube OD 1/2″; Thread NPT1/2″;		 Tube OD 6mm; Thread R1/4;
Tube OD 6mm; Thread R3/8;
Tube OD 8mm; Thread R1/8;
Tube OD 8mm; Thread R1/4;
Tube OD 12mm; Thread R1/4;
Tube OD 12mm; Thread R3/8;
Tube OD 12mm; Thread R1/2;
Female Connector STC Female Connector Tube OD 1/8″; Thread NPT1/8″;
Tube OD 1/8″; Thread NPT1/4″;
Tube OD 1/4″; Thread NPT1/8″;
Tube OD 1/4″; Thread NPT1/4″;
Tube OD 1/4″; Thread NPT3/8″;
Tube OD 1/4″; Thread NPT1/2″;
Tube OD 5/16″; Thread NPT1/8″;
Tube OD 5/16″; Thread NPT1/4″;
Tube OD 3/8″; Thread NPT1/8″;
Tube OD 3/8″; Thread NPT1/4″;
Tube OD 3/8″; Thread NPT3/8″;
Tube OD 3/8″; Thread NPT1/2″;
Tube OD 1/2″; Thread NPT1/4″;
Tube OD 1/2″; Thread NPT3/8″;
Tube OD 1/2″; Thread NPT1/2″;		 N/A
Female Branch Tee STC Female Branch Tee Tube OD 1/8″; Thread NPT1/8″;
Tube OD 1/8″; Thread NPT1/4″;
Tube OD 1/4″; Thread NPT1/8″;
Tube OD 1/4″; Thread NPT1/4″;
Tube OD 1/4″; Thread NPT3/8″;
Tube OD 1/2″; Thread NPT1/4″;
Tube OD 1/2″; Thread NPT3/8″;
Tube OD 1/2″; Thread NPT1/2″;		 N/A
Male Connector  STC Male Connector Tube OD 1/8″; Thread NPT1/8″;
Tube OD 1/8″; Thread NPT1/4″;
Tube OD 3/16″; Thread NPT1/8″;
Tube OD 1/4″; Thread NPT1/8″;
Tube OD 1/4″; Thread NPT1/4″;
Tube OD 1/4″; Thread NPT3/8″;
Tube OD 5/16″; Thread NPT1/8″;
Tube OD 5/16″; Thread NPT1/4″;
Tube OD 3/8″; Thread NPT1/8″;
Tube OD 3/8″; Thread NPT1/4″;
Tube OD 3/8″; Thread NPT3/8″;
Tube OD 3/8″; Thread NPT1/2″;
Tube OD 1/2″; Thread NPT1/4″;
Tube OD 1/2″; Thread NPT3/8″;
Tube OD 1/2″; Thread NPT1/2″;
Tube OD 1/2″; Thread NPT3/4″;		 Tube OD 4mm; Thread M5;
Tube OD 4mm; Thread R1/8;
Tube OD 6mm; Thread M5;
Tube OD 6mm; Thread R1/8;
Tube OD 6mm; Thread R1/4;
Tube OD 8mm; Thread R1/8;
Tube OD 8mm; Thread R1/4;
Tube OD 8mm; Thread R3/8;
Tube OD 10mm; Thread R1/8;
Tube OD 10mm; Thread R1/4;
Tube OD 10mm; Thread R3/8;
Tube OD 10mm; Thread R1/2;
Tube OD 12mm; Thread R1/4;
Tube OD 12mm; Thread R3/8;
Tube OD 12mm; Thread R1/2;
Male Elbow  STC Male Elbow Tube OD 1/8″; Thread NPT1/8″;
Tube OD 1/8″; Thread NPT1/4″;
Tube OD 1/4″; Thread NPT1/8″;
Tube OD 1/4″; Thread NPT1/4″;
Tube OD 1/4″; Thread NPT3/8″;
Tube OD 5/16″; Thread NPT1/8″;
Tube OD 5/16″; Thread NPT1/4″;
Tube OD 3/8″; Thread NPT1/8″;
Tube OD 3/8″; Thread NPT1/4″;
Tube OD 3/8″; Thread NPT3/8″;
Tube OD 3/8″; Thread NPT1/2″;
Tube OD 1/2″; Thread NPT1/4″;
Tube OD 1/2″; Thread NPT3/8″;
Tube OD 1/2″; Thread NPT1/2″;
Tube OD 1/2″; Thread NPT3/4″;		 Tube OD 6mm; Thread M5;
Tube OD 6mm; Thread R1/8;
Tube OD 6mm; Thread R1/4;
Tube OD 8mm; Thread R1/8;
Tube OD 8mm; Thread R1/4;
Tube OD 8mm; Thread R3/8;
Tube OD 8mm; Thread R1/2;
Tube OD 10mm; Thread R1/4;
Tube OD 10mm; Thread R3/8;
Tube OD 12mm; Thread R1/4;
Tube OD 12mm; Thread R3/8;
Tube OD 12mm; Thread R1/2;
Run Tee STC Run Tee Tube OD 1/8″; Thread NPT1/8″;
Tube OD 1/8″; Thread NPT1/4″;
Tube OD 1/4″; Thread NPT1/8″;
Tube OD 1/4″; Thread NPT1/4″;
Tube OD 1/4″; Thread NPT3/8″;
Tube OD 3/8″; Thread NPT1/4″;
Tube OD 3/8″; Thread NPT3/8″;
Tube OD 1/2″; Thread NPT3/8″;
Tube OD 1/2″; Thread NPT1/2″;		 N/A

Show Product Specifications (Group 2)

Sizes Available (Standard) Sizes Available (Metric)
Bulkhead Union STC Bulkhead Union Tube OD 1/8;
Tube OD 1/4;
Tube OD 5/16;
Tube OD 3/8;
Tube OD 1/2;		 Tube OD 6mm;
Elbow Union STC Elbow Union Tube OD 1/8;
Tube OD 1/4;
Tube OD 5/16;
Tube OD 3/8;
Tube OD 1/2;		 Tube OD 6mm;
Tube OD 10mm;
Tube OD 12mm;
Straight Union STC Straight Union Tube OD 1/8;
Tube OD 1/4;
Tube OD 5/16;
Tube OD 3/8;
Tube OD 1/2;		 Tube OD 4mm;
Tube OD 6mm;
Tube OD 8mm;
Tube OD 10mm;
Tube OD 12mm;
Tee Union Tube OD 1/8;
Tube OD 1/4;
Tube OD 5/16;
Tube OD 3/8;
Tube OD 1/2;		 Tube OD 6mm;
Tube OD 8mm;
Cross Union STC Cross Union Tube OD 1/8;
Tube OD 1/4;
Tube OD 5/16;
Tube OD 3/8;
Tube OD 1/2;		 N/A
Reducing Union Tube OD 1/8;
Tube OD 1/4;
Tube OD 5/16;
Tube OD 3/8;
Tube OD 3/8;
Tube OD 1/2;		 N/A
Cap STC Cap Tube OD 1/8;
Tube OD 1/4;
Tube OD 5/16;
Tube OD 3/8;
Tube OD 1/2;		 N/A
Back Ferrule STC Back ferrule Tube OD 1/8;
Tube OD 1/4;
Tube OD 5/16;
Tube OD 3/8;
Tube OD 1/2;		 Tube OD 4mm;
Tube OD 6mm;
Tube OD 8mm;
Tube OD 12mm;
Front Ferrule STC Front ferrule Tube OD 1/8;
Tube OD 1/4;
Tube OD 5/16;
Tube OD 3/8;
Tube OD 1/2;		 Tube OD 6mm;
Tube OD 8mm;
Tube OD 10mm;
Tube OD 12mm;
Nut  STC Nut Tube OD 1/8;
Tube OD 1/4;
Tube OD 5/16;
Tube OD 3/8;
Tube OD 1/2;		 Tube OD 6mm;
Tube OD 8mm;
Tube OD 10mm;
Tube OD 12mm;
Plug STC Plug Tube OD 1/8;
Tube OD 1/4;
Tube OD 5/16;
Tube OD 3/8;
Tube OD 1/2;		 Tube OD 6mm;
Tube Stem Reducer STC Tube Stem Reducer  1/8X1/16;
1/8X1/8;
1/8X1/4;
1/4X1/8;
1/4X1/4;
1/4X3/8;
1/4X1/2;
5/16X1/4;
3/8X1/4;
3/8X3/8;
3/8X1/2;
1/2X1/2;
Tube X Male Pipe
(Butt Weld)		 STC Tube X Male Pipe (Butt Weld)  1/8X1/8;
1/4X1/8;
1/4X1/4;
5/16X1/4;
3/8X1/4;
3/8X3/8;
3/8X1/2;
1/2X1/2;

Barb Compression Fittings

Show Product Specifications

Sizes Available
Male Branch Tee Swivel STC Male Branch Tee Swivel Tube OD 1/4″; Thread N1/8;
Tube OD 1/4″; Thread N1/4;
Female Connector STC Female Connector Tube OD 1/4″; Thread N1/8;
Tube OD 1/4″; Thread N1/4;
Male Connector STC Male Connector Tube OD 1/4″; Thread N1/8;
Tube OD 1/4″; Thread N1/4;
Tube OD 3/8″; Thread N1/4;
Male Elbow Swivel Connector STC Male Elbow Swivel Connector Tube OD 1/4″; Thread N1/8;
Tube OD 1/4″; Thread N1/4;
Bulkhead Union  STC Bulkhead Union Tube OD 1/4”
Elbow Union  STC Elbow Union Tube OD 1/4”
Straight Union STC Straight Union Tube OD 1/4”
Tee Union STC Tee Union Tube OD 1/4”

For more information about these products…
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