Product Details: Manufacturer Part Number: TH-428-SV|Product Type|Single VaneSystem of Measurement|InchMaterial|BrassThread Size (Inch)|1/4-28Thread Size (mm)|Drill Size|Overall Length (Decimal Inch)|0.3000Thread Size|1/4-28 inInsert Diameter (Decimal Inch)|0.3750Pilot Diameter (Decimal Inch)|0.3540Insert Diameter|0.375Small End Hole Diameter (Decimal Inch)|0.3490Large End Hole Diameter|0.363Large End Hole Diameter (Decimal Inch)|0.3630Maximum Grip|0.194Minimum Wall Thickness (Decimal Inch)|0.1940Minimum Grip|Pilot Diameter|0.354Small End Hole Diameter|0.349Wall Thickness|Thread Pitch|Minimum Grip (Decimal Inch)|0.1940Drill Size (Inch)|11/32For Material Type|PlasticThread Standard|UNFIncludes|Number Of Pieces|PSC Code|UNSPSC Code|