Leader-Fastener® is acknowledged as a manufacturer, exporter & suppliers of DIN 439-2 Hex Nuts For High Strength Struc. We have a complete line of service from having invested in production plants, export department and to having a quality control team and center to meet your requirements. We regard quality as the life of the company. We persist in good quality as the first policy and have established a set of quality control and inspection system according to the international standard. We have carried out ISO9001 Quality Guarantee System in every course of production, transportation and selling. We do hope we could be your partner in business by topping quality, knight service and competitive price in the near future and be your friends as well.
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).
Material : Carbon steel, Stainless steel, Alloy Steel, Brass.
Finishment: Black, Zinc Plated, Zinc Yellow, HDG, Phosphate, DACROMET, Geomet, Magin, Ruspert, Teflon, etc.
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