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Din 9021

Din 9021 iso equivalent

Din 9021 washer is a type of large diameter washer where the external diameter is three times that of the nominal internal diameter. Bhalla Fasteners is the top leading manufacturer, exporter and supplier of din 9021 washer.

Bhalla Fasteners manufactures din 9021 washers in many sizes like din 9021 m8, m16 din 9021, m12 din 9021, din 9021 m30, din 9021 m24, m8 din 9021, din 9021 m3, din 9021 m20, din 9021 m4, din 9021 m16, din 9021 m10, din 9021 m12 , din 9021 a4 and din 9021 m6.

DIN 9021 is an oversized (O.D). metric flat washers which have round discs with round holes with a large outside diameter that provide a smooth bearing surface when used under the head of a hex head bolt or hex nut. When nominal diameter of bolt is D the thickness of the washer is 0.12D and outer diameter is 2D+3 mm and inner diameter is D+0.5mm.

Bhalla Fasteners manufactures metric DIN 9021 Flat Fender Washers which are  round flat washers with a larger outer diameter (OD) approximately 3 x inner diameter (ID). In comparison to a standard flat washer these larger OD washers are used to distribute the load over a larger bearing surface area. Din 9021 washers is to be positioned below the head of a bolt or below the nut. There is a less chance of  damage to the bearing surface as  load is evenly distributed over a larger area. Din 9021 washer is also used if the outer diameter of a mating nut is smaller than the hole through which the screw is placed.

service
Weight Table

 

d1 - Inner diameter
d2 - Outer diameter
h - Washer width

Material Soft Steel,spring steel
Finish:

Plain Zinc , Hot Dip Galvanised, Phosphating, Auto Black, Mechanical Galvanized

Table according to DIN 9021:

 

dimensions in mm
Nominal size For thread d1 d2 h Weight kg/1000pcs
min. Nominal size max. max. Nominal size min. Nominal size max. min.
2,7 M2,5 2,7 2,84 8 7,64 0,8 0,9 0,7 0,28
3,2 M3 3,2 3,38 9 8,64 0,8 0,9 0,7 0,349
3,7 M3,5 3,7 3,88 11 10,57 0,8 0,9 0,7 0,529
4,3 M4 4,3 4,48 12 11,57 1 1,1 0,9 0,774
5,3 M5 5,3 5,48 15 14,57 1,2 1,4 1 1,46
6,4 M6 6,4 6,62 18 17,57 1,6 1,8 1,4 2,79
7,4 M7 7,4 7,62 22 21,48 2 2,2 1,8 5,29
8,4 M8 8,4 8,62 24 23,48 2 2,2 1,8 6,23
10,5 M10 10,5 10,77 30 29,48 2,5 2,7 2,3 12,2
13 M12 13 13,27 37 36,38 3 3,3 2,7 22,2
15 M14 15 15,27 44 43,38 3 3,3 2,7 31,6
17 M16 17 17,27 50 49,38 3 3,3 2,7 40,9
20 M18 20 20,52 56 54,1 4 4,6 3,4 67,4
22 M20 22 22,52 60 58,1 4 4,6 3,4 76,8
26 M24 26 26,84 72 70,1 5 6 4 139
33 M30 33 34 92 89,8 6 7 5 273
39 M36 39 40 110 107,8 8 9,2 6,8 522