hex nut
Description:
Material
a) steel, performance grade: M2.5:6; M3~M39:6,8,10;> M39: as per the agreement.
b) Stainless steel, Performance grade: M39: A2-70, A4-70;> M39: by agreement.
c) Non-ferrous metals, performance grade: by agreement.
Hexagon nuts, screws, bolts, screws cooperate with each other, play the role of connecting fastening parts. Divfine and coarse teeth, English and American system. Common criteria are: GB52, GB6170, GB6172, and DIN934.
General national standards and German standards are represented by M (such as M8, M16), The American or English system indicates the specifications (e. g. 8,8 #, 10 #, 1 / 4,3 / 8) fasteners, Nuts are parts that connect mechanical equipment, Through the threads on the inside, Equvalent nuts and screws, To be connected together, For example, M4-0.7 nuts can only match with M4-0.7 screws (in the nuts, M4 finger nut inner diameter of approximately 4mm, 0.7 The distance between the two thread teeth is 0.7mm); American products, For example, 1 / 4-20 nuts can only be matched with 1 / 4-20 screws (1 / 4 finger nuts are approximately 0.25 inches inside diameter, 20 In each inch, With 20 teeth).
