Standard ACME Flange Standard ACME Screw Dimensional Specifications Performance Specifications
Screw Size
# of Starts
Lead
Threads Per Inch
Min. Root Diameter
Weight (lbs/ft)
Screw Material #
Nut Material 		1 3/4-4
1
0.250
4
1.446
7.04
1018CRS
#660 Bronze		 Screw Size
Dynamic Capacity (lbs)
Static Capacity (lbs)
Torque to raise 1 lb. (in-lbs)
Forward Driving Efficiency
Thread Class 		1 3/4-4
15,300
49,900
0.175
23%
2G