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DIN 439-2 Hex Nut
  • DIN 439-2 Hex NutDIN 439-2 Hex Nut

DIN 439-2 Hex Nut

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Product Description

Metric DIN 439 Hex Nut are thin hexagonal jam nuts with a thickness of 0.5 x diameter. A hex jam nut is a low-profile type of hex nut, typically about half as thick as a regular hex nut. It is often used as a lock nut, where it is threaded up against a standard nut locking it in place. Also in circumstances where a standard nut is too thick for an application, a hex jam nut can be a very useful alternative. Metric DIN 439 thin hex jam nuts are available unchamfered (Type A) and chamfered (Type B).

 

Product Specification of DIN 439-2 Hex Nut

Material : Carbon steel, Stainless steel, Alloy Steel, Brass.

Finishment: Black, Zinc Plated, Zinc Yellow, HDG, Phosphate, DACROMET, Geomet, Magin, Ruspert, Teflon, etc.


Leader-Fastener® DIN 439 (-2) - 1987 Chamfered Hexagon Thin Nuts—Product Grades A and B


Thread Size
D
M1.6 (M1.8) M2 M2.5 M3 (M3.5) M4 M5 M6 M8 M10 M12 (M14) M16
P pitch Coarse thread 0.35 0.35 0.4 0.45 0.5 0.6 0.7 0.8 1 1.25 1.5 1.75 2 2
Fine thread 1 / / / / / / / / / 1 1 1.5 1.5 1.5
Fine thread 2 / / / / / / / / / / 1.25 1.25 / /
Fine thread 3 / / / / / / / / / / / / / /
da min 1.6 1.8 2 2.5 3 3.5 4 5 6 8 10 12 14 16
max 1.84 2.06 2.3 2.9 3.45 4 4.6 5.75 6.75 8.75 10.8 13 15.1 17.3
dw min 2.4 2.7 3.1 4.1 4.6 5.1 5.9 6.9 8.9 11.6 15.6 17.4 20.5 22.5
e min 3.48 3.82 4.32 5.45 6.01 6.58 7.66 8.79 11.05 14.38 18.9 21.1 24.49 26.75
m max=nominal size 1 1.1 1.2 1.6 1.8 2 2.2 2.7 3.2 4 5 6 7 8
min 0.75 0.85 0.95 1.35 1.55 1.75 1.95 2.45 2.9 3.7 4.7 5.7 6.42 7.42
mw min 0.6 0.68 0.76 1.08 1.24 1.4 1.56 1.96 2.32 2.96 3.76 4.56 5.14 5.94
s max=nominal size 3.2 3.5 4 5 5.5 6 7 8 10 13 17 19 22 24
min 3.08 3.38 3.82 4.82 5.32 5.82 6.78 7.78 9.78 12.73 16.73 18.67 21.67 23.67
per 1000 units ≈ kg 0.06 0.08 0.11 0.22 0.29 0.37 0.57 0.83 1.6 3.2 7.2 10.4 15.9 20.5


Thread Size
D
(M18) M20 (M22) M24 (M27) M30 (M33) M36 (M39) M42 (M45) M48 (M52)
P pitch Coarse thread 2.5 2.5 2.5 3 3 3.5 3.5 4 4 4.5 4.5 5 5
Fine thread 1 1.5 2 1.5 2 2 2 2 3 3 3 3 3 3
Fine thread 2 2 1.5 2 1.5 / / / 2 2 2 2 2 2
Fine thread 3 / / / / 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5
da min 18 20 22 24 27 30 33 36 39 42 45 48 52
max 19.5 21.6 23.8 25.9 29.2 32.4 35.6 38.9 42.1 45.4 48.6 51.8 56.2
dw min 24.9 27.7 29.5 33.2 38 42.7 46.6 51.1 55.9 60 64.7 69.4 74.2
e min 29.56 32.95 35.03 39.55 45.2 50.85 55.37 60.79 66.44 71.3 76.95 82.6 88.25
m max=nominal size 9 10 11 12 13.5 15 16.5 18 19.5 21 22.5 24 26
min 8.42 9.1 9.9 10.9 12.4 13.9 15.4 16.9 18.2 19.7 21.2 22.7 24.7
mw min 6.74 7.28 7.92 8.72 9.9 11.1 12.3 13.5 14.6 15.8 17 18.2 19.8
s max=nominal size 27 30 32 36 41 46 50 55 60 65 70 75 80
min 26.16 29.16 31 35 40 45 49 53.8 58.8 63.1 68.1 73.1 78.1
per 1000 units ≈ kg 29.6 40.2 48.3 69.5 101 139 183 244 316 403 500 617 755


①,Product Grade:

For sizes up to M16: A ;

For larger sizes: B .


②,Material:

a)Steel, Mechanical properties: Property class(material) for size M2.5 or less 14H; for size M3 up to M39 04 or 05; for size above M39 subject to agreement. As specified in ISO 898-2 DIN 267-23 and DIN 267-24.

b)Stainless steel for size up to M20 A2-70; M20~M39 A2-50; >M39 subject to agreement. DIN 267-11;

c)Non-ferrous metals, E.g. CU2 or CU3. DIN 267-18



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