Thread Sizes: 1/4-20 Material: Stainless Steel Pressure: Heavy End Pressure Start (lbs.): 1 End Pressure Full (lbs.): 5 Body Length: 1/2 Nose Diameter: 0.124 Projection: 1/8 Locking Element: No Knurl Diameter: 1/2 Knurl Thickness: 1/4 Category: Heavy Pressure