Bulkhead Locknut Application Air Natural Gas Non-Potable Water Fitting Material Brass Maximum Operating Pressure 3 500 psi Maximum Operating Temperature 400 Degrees F Overall Length 7/32 in Thread Size 7/16-20 Specific Fitting Shape Bulkhead Locknut System of Measurement Imperial Compatible Fitting Brands Swagelok Standards ASTM 31.3 Fitting Connection Type Compression Hex Size 5/8 in Minimum Operating Temperature 40 Degrees F