1979 ROBERTSON-HARTFORD 20-225
- Manufacturer: Hartford
- Model: 20-225
- Threading length: 75 millimeter
Blank diameter: 6.35 - 12.4mm | Max. thread length: 75mm (38mm on max Diameter) | Max. shank length: 104mm | Output: 135 - 225 PPM
Sheffield, United Kingdom1979 ROBERTSON-HARTFORD 20-225
- Manufacturer: Hartford
- Model: 20-225
- Threading length: 75 millimeter
Blank diameter: 6.35 - 12.4mm | Max. thread length: 75mm (38mm on max Diameter) | Max. shank length: 104mm | Output: 135 - 225 PPM
Sheffield, United Kingdom

