(1) An internal polygonal is arranged on the top of the hex nut; diameter of the internal polygonal matches with the diameter of an internal polygonal screw tool.

(2) You place the screwdriver blade on one side of the hex nut and tap the screwdriver's handle with the hammer.

(3) Adjust the nose of the ram to align the pointer with the SET mark on the scale of the tester and tighten the hex nut.

(4) The mother of nylon lock, metal lock master, K cap, hex nut, cap-shaped, butterfly hats and all kinds of washers, retaining rings, pins and so on.

(5) The minimum across flats dimension of the hex bolt or hex nut being used to test the loose washer must not be greater than 1.5 times the basic thread size.

(6) Hexagon bolts and nuts, hexagon socket head cap screws, thread bar, carriage bolts, Nylon lock hex nut, flat washer, fish bolt set, standard fasteners etc.