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Performance:
(1) Good combination with supporting parts to meet normal use.
(2) Torque test: With screw type terminal components, they need to withstand corresponding torque testing. Tighten and loosen the screws and nuts: ------ All other screws and nuts should be tightened 5 times, and there should be no slipping phenomenon.

The nominal diameter of the screw thread mm	Torque of metal screws for betting N.m	Torque for other metal screws and nuts N.m
≤2.8	0.2	0.4
＞2.8≤3	0.25	0.5
＞3≤3.2	0.3	0.6
＞3.2≤3.6	0.4	0.8
＞3.6≤4.1	0.7	1.2
＞4.1≤4.7	0.8	1.8
＞4.7≤5.3	0.8	2.0
＞5.3≤6	---	2.5

Note: Applicable to headless metal screws that do not protrude from the hole during screw tightening, and other metal screws that cannot be tightened with a screwdriver with a blade wider than the screw diameter.