Power AC Acme Nut (NPA), NPA1/2-2(4) LH | Helix Linear Technologies

D - Thread Size (in)	.562-18
Diameter Code	50
Dynamic Load Capacity (lbs)	625
E - Thread Length (in)	0.380
Efficiency (%)	78.6085705
Imperial or Metric	TRUE
Lead (in)	0.500
Lead Accuracy +/- (in/in)	0.0003
Lead Time	2 Weeks
Material	Acetal
Mating Screw Part No	1/2-2(4) LH
Maximum Axial Lash (in)	FALSE
Nominal Diameter A (in)	0.500
Nut Code	NPA
Nut Diameter B (in)	0.680
Nut Length C (in)	0.620
Nut Type	Plastic Acme Nut
Pitch (in)	0.125
Pitch (mm)	3.175
Product Category	Lead Screw Nut
Product Sub Category	Freewheeling
Product Sub Category 1	Standard
Screw Code	1/2-2(
Starts	4
Thread Class	Centralizing
Thread Direction	LH
Thread Type	Stub Acme
Threads Per Inch	8
Torque to Raise 1 lb (in-lb)	0.1012325641
Turns Per Inch of Travel	2