Manufacturer Part Number: W1000203BS|Go/No Go|Go; No GoThread Size|#1-20Material|Hardened Tool SteelClassification|3BGo Pitch Diameter (Inch)|0.9675Go Pitch Diameter (mm)|No Go Pitch Diameter (mm)|No Go Pitch Diameter (Decimal Inch)|0.9719Handle Size|4Handle Included|YesOverall Length (Decimal Inch)|Overall Length (mm)|Thread Direction|Calibrated|Traceability Certification Included|Standards|Thread Style|Coating/Finish|Single Or Double End|DoubleSeries|Thread Standard|Includes|HandleUNSPSC Code|