1/4" NPT has an outside thread diameter of 0.540" for Air In/Out and 1/8" NPT has an outside thread diameter of 0.405" for Gauge Ports, designed for Regulator Pressure ONLY.
This Regulator is compatible with multiple models including Craftman D27253, D27254, 1000000275, 167783, 165570, Dewalt, B&D Craftsman, and Porter Cable. If unsure, provide us with your model and type number for assistance.
1/4" Air Regulator includes 0-160 PSI Gauge and M Style Quick Coupler for installation options. The balanced valve design minimizes the impact of inlet pressure changes on outlet pressure, with airflow direction indicated by an arrow on the device. UL Listed and CSA Certified for global air compressor use.
For Tank/Regulator pressure needs, refer to ASIN: B082MTPBZS on Amazon.