SAE J514 for Hex Nipples, Expanders, Elbows, Tees and Crosses. SAE J514, J530, and J531 for Bushings and Plugs. Temp Range: -65F to +400F Materials: SAE 12L14 carbon Steel trivalent zinc plated or bright silver finish Forged, barstock, chamfered male ends have an internal 30 degree chamfer to mate with NPSM female swivel union connections. Many pipe fittings do not have this chamfer as it is not required per SAE J514 standard.
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