DIN6334 Long perforated nut Ellongated Hexagon Coupling Nuts height M6-M36 Zinc/D.H.G YZP BLACK

Place of Origin CHINA
Brand Name QBH
Certification ISO9001
Model Number DIN6334
Minimum Order Quantity 900kg
Price 1500USD/TON
Packaging Details 25kg Carton+900kg/Pallet or 5KG/CTN
Delivery Time 30days
Payment Terms L/C, T/T,OA
Supply Ability 200TON/MONTH
Product Details
Material Carbon Steel Size M6-M36
Surface Treatment Plain,Zinc,Black,H.D.G Grade 4/6/8/10
Process Cold Forging,Hot Forging Sample Free Sample
Packaging 25kg Carton+900kg/Pallet Or Small Packing
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Product Description

Specification

A coupling nut, also known as extension nut, is a threaded fastener for joining two male threads, most commonly a threaded rod, but also pipes. The outside of the fastener is usually a hex so a wrench can hold it. Variations include reducing coupling nuts, for joining two different size threads; sight hole coupling nuts, which have a sight hole for observing the amount of engagement; and coupling nuts with left-handed threads. These are used to make up long rod assemblies from shorter lengths of rods. The rods are threaded into the coupling nut for a certain distance. Coupling nut dimensions are described by the Industrial Fasteners Institute in standard IFI-128. It is given a plain finish. It is either cold drawn or hot rolled depending on the bar stock used. Coupling nuts threaded with two different thread sizes and profiles are called reducing coupling nuts.

Coupling nuts can be used to tighten a rod assembly inward or to press a rod assembly outward

 

Metric DIN 6334 Hexagon Coupling Nuts also known as extension nuts are elongated fully threaded hex nuts that often used to join two externally threaded fasteners usually threaded rods. DIN 6334 metric hex nuts have a height of 3 x the major diameter of the thread.

 

Metric DIN 6334 Ellongated Hexagon Coupling Nuts height 3 x Dia

Equivalent norms: CSN 021604;

 

DIN6334  Long perforated nut Ellongated Hexagon Coupling Nuts height M6-M36 Zinc/D.H.G YZP BLACK 0

Legend:

l - length of nut
s - size of the hexagon
d - the nominal diameter of the thread

Makings:

Steel: 6, 8, 10
Stainless: A2,A4
Plastic: -
Non Ferrous: -
Thread: 6H

 

 

Dimensions elongated hexagon nuts

DIN 6334     UNIT:mm

 
d L s KG/MPCS
M6 18 10 7
M8 24 13 18
M10 30 17 42
M12 36 19 63
M14 42 22 95.5
M16 48 24 122
M18 54 27 140
M20 60 30 240
M22 66 32 300
M24 72 36 412
M27 81 41 608
M30 90 46 825
M33 99 50 1100
M36 108 55 1470

 

 

 

Process flow

 

Cold forging

Annealing treatment(if need) ➨ wiredrawing ➨ clod forging ➨ tapping ➨make heat treatment(if need)Finish Packing

 

Hot forging

Cutting material hot forging turning tapping make heat treatment(if need)Finish Packing

 

 

Product Grade

 

Class 5 Class 6 Class 8 Class 10

 

 

Materials and Chemical compstition

 

1008

CHEMICAL COMPOSI %
C Si Mn P S Cr Ni Cu Al
0.06 0.06 0.33 0.013 0.003 0.01 0 0.01 0.028

 

 

1035

CHEMICAL COMPOSI %
C Si Mn P S Cr Ni Cu
0.34 0.13 0.73 0.012 0.002 0.02 0.01 0.02

 

 

10B21

CHEMICAL COMPOSI %
C Si Mn P S Cr B
0.2 0.04 0.81 0.017 0.007 0.017 0.0021

 

 

1045

CHEMICAL COMPOSI %
C Si Mn P S Cr Ni Cu
0.45 0.23 0.58 0.014 0.006 0.057 0.008 0.016

 

40CR

CHEMICAL COMPOSI %
C Si Mn P S Cr Ni Cu
0.4 0.21 0.54 0.015 0.008 0.95 0.02 0.02

 

35CRMO

CHEMICAL COMPOSI %
C Si Mn P S Cr Ni Cu Mo
0.35 0.22 0.59 0.01 0.003 0.93 0.01 0.01 0.21

 

 

42CRMO

CHEMICAL COMPOSI %
C Si Mn P S Cr Ni Cu Mo
0.42 0.27 0.92 0.013 0.004 1.01 0.03 0.04 0.2

 

Finish

 

PLAIN ZP YZP BLACK HDG DACROMET GEOMET CHROME NICKEL AND SO ON

 

 

PACKING

 

QBH BULK

20-25KG/CTN,36CTNS/PALLET

20-30KG/BAGS,36BAGS/PALLET

ONE TON/BOXES

50KG/ IRON DRUM,12 IRON DRUMS/PALLET

 

 

QBH SMALL PACKING

Packing in small boxes according to customer’s requirements

Packing in plastic bag according to customer’s requirements

 

QBH PALLET TYPE

SOLID WOOD FUMIGATION PALLET

EURO Pallet

THREE SPLINT PALLET

WOODEN BOX

 

 

MECHANICAL PROPERTY

 

TESTING STANDARD:DIN267- 4 OR ISO898-2


 

SIZE CLASS
04 05
PROOF LOAD
N/mm2

HV
NUT PROOF LOAD
N/mm2

HV
NUT
min max HEAT TREATMENT TYPE min max HEAT TREATMENT TYPE
/ M4 380 188 302 NO THIN NUT 500 272 353 YES THIN NUT
M4 M7
M7 M10
M10 M16
M16 M39
SIZE CLASS
4 5
PROOF LOAD
N/mm2
HV NUT PROOF LOAD
N/mm2
HV NUT
min max HEAT TREATMENT TYPE min max HEAT TREATMENT TYPE
/ M4 / / / / / 520 130 302 NO 1
M4 M7 580
M7 M10 590
M10 M16 610
M16 M39 510 117 302 NO 1 630 146
SIZE CLASS
6 8
PROOF LOAD
N/mm2
HV NUT PROOF LOAD
N/mm2
HV NUT
min max HEAT TREATMENT TYPE min max HEAT TREATMENT TYPE
/ M4 600 150 302 NO 1 800 180 302 NO 1
M4 M7 670 855 200
M7 M10 680 870
M10 M16 700 880
M16 M39 720 170 920 233 353 YES
SIZE CLASS
8 9
PROOF LOAD
N/mm2
HV NUT PROOF LOAD
N/mm2
HV NUT
min max HEAT TREATMENT TYPE min max HEAT TREATMENT TYPE
/ M4 / / / / / 900 170 302 NO 2
M4 M7 915 188
M7 M10 940
M10 M16 950
M16 M39 890 180 302 NO 2 920
SIZE CLASS
10 12
PROOF LOAD
N/mm2
HV NUT PROOF LOAD
N/mm2
HV NUT
min max HEAT TREATMENT TYPE min max HEAT TREATMENT TYPE
/ M4 1040 272 353 YES 1 1140 295 353 YES 1
M4 M7 1040 1140
M7 M10 1040 1140
M10 M16 1050 1140
M16 M39 1060 / / / / /
SIZE CLASS  
12
PROOF LOAD
N/mm2
HV NUT
min max HEAT TREATMENT TYPE
/ M4 1150 272 353 YES 2
M4 M7 1150
M7 M10 1160
M10 M16 1190
M16 M39 1200

 

 

 

The advantages of QBH

  • QBH brand sales to the main quality assurance.
  • Years of export trade management, excellent service, word-of-mouth guarantee.
  • By working with TUV,escort for quality.
  • Customization of non-standard parts can be made according to customer's requirements and drawings.
  • For quality customers,we can provide a certain credit period.
     

Product application

 

Often referred to as extension nuts, use these to connect and extend threaded rods. They're about half the strength of medium-strength steel coupling nuts for use in light duty fastening applications.

      

 

DIN 6334 Alias

  • French (fr): DIN 6334 Écrous hexagonaux – 3D
  • German (de): DIN 6334 Sechskantmuttern, 3d hoch
  • Italian (it): DIN 6334 Dadi esagonali di prolunga m 3 x d
  • Dutch (nl): DIN 6334 Hexagon Noten – 3D
  • Czech (cs): DIN 6334 Prodlužovací matice 3D

 

 

Metric Medium-Strength Steel Coupling Nuts—Class 8

Often referred to as extension nuts, use these to connect and extend threaded rods. They're comparable in strength to Class 8.8 bolts.

Zinc-plated steel coupling nuts resist corrosion in wet environments.

Black-oxide steel coupling nuts have a dark surface color and are mildly corrosion resistant in dry environments.

 

 

Metric High-Strength Steel Coupling Nuts—Class 10

Often referred to as extension nuts, use these to connect and extend threaded rods. Made from Class 10 steel, they're about 25% stronger than medium-strength steel coupling nuts and comparable in strength to Class 10.9 bolts. A zinc plating provides corrosion resistance in wet environments.

 

 

Metric Super-Corrosion-Resistant 304 and 316 Stainless Steel Coupling Nuts

 

 

Made from 304 and 316 stainless steel, these coupling have excellent resistance to chemicals and salt water. Also known as extension nuts, use them to connect and extend threaded rods. They may be mildly magnetic.

 

 

 

DIN6334  Long perforated nut Ellongated Hexagon Coupling Nuts height M6-M36 Zinc/D.H.G YZP BLACK 1