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Slotted locknuts
Extract from
DIN 1804


Type W not hardened, not ground Type H hardened and mating surface ground
d1 4H d2 h11 d3 b h h14 C-Spanner
DIN 1810-
  d1 4H d2 h11 d3 b h h14 C-Spanner
DIN 1810-
                       
M 8x1 20 16 4 5 A 16-20   M 32x1,5 52 45 7 11 A 52-55
M 10x1 25 20 5 6 A 25-28   M 35x1,5 55 48 7 11 A 52-55
M 12x1,5 28 23 5 6 A 25-28   M 38x1,5 58 50 8 11 A 58-62
                       
M 14x1,5 30 25 5 7 A 30-32   M 40x1,5 62 54 8 11 A 58-62
M 16x1,5 32 27 5 7 A 30-32   M 42x1,5 62 54 8 12 A 58-62
M 18x1,5 34 28 6 8 A 34-36   M 45x1,5 68 60 8 12 A 68-75
                       
M 20x1,5 36 30 6 8 A 34-36   M 48x1,5 75 67 8 13 A 68-75
M 22x1,5 40 34 6 9 A 40-42   M 50x1,5 75 67 8 13 A 68-75
M 24x1,5 42 36 6 9 A 40-42   M 52x1,5 80 70 10 13 A 80-90
                       
M 26x1,5 45 38 7 10 A 45-50   M 55x1,5 80 70 10 13 A 80-90
M 28x1,5 50 43 7 10 A 45-50   M 58x1,5 90 80 10 13 A 80-90
M 30x1,5 50 43 7 10 A 45-50 M 60x1,5 90 80 10 13 A 80-90
Specification Information How to order
Steel
Tensile strength 500 N/mm2

Type W
not hardened, not ground

Type H
hardened HRC 60 +/- 2
(thread not hardened)
Mating surface ground

On slotted locknuts the ground surface d3 stands proud and should be used as a mating surface.

The official standard sheet specifies additional sizes (up to M 200x3); Delivery on inquiry.

Slotted locknut
DIN 1804-M20x1,5-H

Code No. 1804
dM20x1,5
Type H

C - Spanner
DIN 1810-A30-32



collar nuts din 6331spherical washers male and female gn 6319