Union nuts

Union Nuts DIN 3870, Form B

MECO-Union nuts to DIN 3870-B2-LL/Material: C10c or QSt36 or 11SMnPb30+C

Pipe-Outside-Ø Thread d1 d2 h * S Part-No.
5 M 10x1 6,5 11,5 12 5991
6 M 12x1,5 7,5 14,5 14 5992
8 M 14x1,5 9,5 14,5 17 5993
10 M16x1,5 11,5 15,5 19 5994
12 M 18x1,5 13,5 15,5 22 5995
15 M 22x1,5 17 17 27 5996
18 M 26x1,5 20 18 32 5997

*) An overrun of max. 1 mm is permitted on cold-pressed union nuts.
Other designs on request.


Union Nuts DIN 3870, Form A

MECO-Union nuts to DIN 3870-A3 or EN ISO 8434-1-N/Material: C10c or QSt36

Pipe-Outside-Ø Reihe Thread d1 d2 h * S Part-No
4 LL M 8x1 4 11 10 6002
5 LL M 10x1 5 11,5 12 5338
6 LL M 10x1 6 11,5 12 5338/6
8 LL M 12x1 8 12 14 6003
6 L M 12x1,5 6 14,5 14 5340
8 L M 14x1,5 8 14,5 17 5341
10 L M 16x1,5 10 15,5 19 5342
12 L M 18x1,5 12 15,5 22 5343
15 L M 22x1,5 15 17 27 5344
18 L M 26x1,5 18 18 32 5345
6 S M 14x1,5 6 16,5 17 6004
8 S M 16x1,5 8 16,5 19 6005
10 S M 18x1,5 10 17,5 22 6006

*) An overrun of max. 1 mm is permitted on cold-pressed union nuts.
Other designs on request


Union Nuts DIN 7606

MECO-Union nuts to DIN 7606/Material: 11SMnPb30+C or C10c or QSt36

Pipe-Outside-Ø Thread d1 d2 h * S Part-No.
5 M 10x1 6,5 11 14 3036
8 M 14x1,5 9,5 14 17 544/6
8 M16x1,5 9,5 14 19 4651/8
5 G 1/8" 6,5 11 14 5136/5
6 G 1/4" 7,5 14 17 4764/6
8 G 1/4" 9,5 14 17 4764/8
8 G 3/8" 9,5 14 19 5137/8
10 G 3/8" 11,5 14 19 5137/10
12 G 1/2" 13,5 16 27 5138/12
18 G 3/4" 20 16 32 5766/18
22 G 1" 24 18 41 5767/22

*) An overrun of max. 1 mm is permitted on cold-pressed union nuts.
Other designs on request


Union Nuts DIN 86147

MECO-Union nuts to DIN 86147/Material: 11SMnPb30+C or C10c or QSt36

Pipe-Outside-Ø Thread d1 d2 h S Part-No.
30 G 1 1/4 30 24 50 6158

Other designs on request.

Our large DIN in-stock range:

  • Banjo pipe unions and banjo bolts
  • Hose connections and hosing
  • Pipe connections, brazed and unbrazed
  • Connectors
  • Screw plugs
  • Seals and special parts

Turned parts are produced using machining steel, brass, aluminium, heat-treatable steel and stainless steel. We process piping made from:

  • Steel in accordance with DIN EN 10305
  • Stainless steel in accordance with DIN EN 17455-17458
  • Brass and copper in accordance with DIN EN 12449
  • Aluminium in accordance with DIN EN 573 and 754

Do your fittings have to meet special requirements or exceptional wishes? In that case, we can help you with our expertise and many years of experience. Together with you, we work out a fitting solution and manufacture the individual product just for you.

Ready-to-use products from MECO:

  • Turned parts with diameters from 8 to 60 mm
  • Piping from 4 to 22 mm RA diameter
  • Fuel and low-pressure hose lines from NW3 to 20.

Safety as a matter of tradition

With high-grade screw couplings for piping and hosing, as well as pipes and hoses ready for installation, we have been a favoured and reliable partner for our customers for over 100 years, particularly in the fields of engine construction, construction and agricultural machinery, commercial vehicles and special-purpose vehicles, as well as the hydraulics industry.