Manufacturer Part Number: JN-155-M|Accessory Type|Jaw NutProduct Compatibility|15 in Kitagawa Chuck B-15Material|Chuck Diameter Compatibility (mm)|Chuck Diameter Compatibility (Decimal Inch)|15.0000Thread Size|M20Screw Size (mm)|20.00Screw Size (Inch)|Screw Size (Decimal Inch)|Mount Type|Outside Diameter (mm)|Outside Diameter (Decimal Inch - 4 Decimals)|Outside Diameter (Inch)|Serration Dimensions|0.0591 x 60 degrees; 1.5 mm x 60 degreesDistance Between Mount Hole Centers (Decimal Inch)|1.6900Distance Between Mount Hole Centers (mm)|Groove Width (Decimal Inch)|0.8640Product Length (Decimal Inch)|Product Length (Inch)|3-1/4Product Width (Inch)|Product Height (mm)|Req'd # of Studs for Chuck|Product Height (Inch)|1.7500Product Width/Diameter (Decimal Inch)|1.3200Number Of Pieces|3Distance Between Mount Holes (Fractional Inch)|UNSPSC Code|