N5406-16-12-SS by Brennan Inc. | -16 Male NPTF x -12 Female NPTF Reducer | Straight | Stainless Steel DC - API Coupler x Coupler 172" 9/16" 10004B-A05 1/4" 5/16"

172" 9/16" 10004B-A05 1/4" 5/16" 1/2-20 1

Wall thickness for all standard sizes is 1/16

13:6b states: "Where an air hose is connected to a portable air powered tool used by an employee

2300 2404-12-8 1-1/16"-12 1/2"-14 3000 PSI 0

0644 SJSS-REPAR-S250 SJSS300SCC120 3" 350 PSI @ 70°F

N5406-16-12-SS by Brennan Inc. | -16 Male NPTF x -12 Female NPTF Reducer | Straight | Stainless Steel DC - API Coupler x Coupler 172" 9/16" 10004B-A05 1/4" 5/16"Part Number Material Male NPTM Female NPTF N5406 02 01 SS Stainless Steel 1 8" 1 16" N5406 04 02 SS Stainless Steel 1 4" 1 8" N5406 06 02 SS Stainless Steel 3 8" 1 8" N5406 06 04 SS Stainless Steel 3 8" 1 4" N5406 08 02 SS Stainless Steel 1 2" 1 8" N5406 08 04 SS Stainless Steel 1 2" 1 4" N5406 08 06 SS Stainless Steel 1 2" 3 8" N5406 12 04 SS Stainless Steel 3 4" 1 4" N5406 12 06 SS Stainless Steel 3 4" 3 8" N5406 12 08 SS Stainless Steel 3 4" 1 2"