Power Fittings DIN557 Class6 Cl8 HDG M16 Square Nuts

Place of Origin CHINA
Brand Name QBH
Certification ISO9001
Model Number DIN557
Minimum Order Quantity 900KG
Price 1000USD/TON
Packaging Details 25kg Carton+900kg/Pallet
Delivery Time 30-60 days
Payment Terms L/C, T/T
Supply Ability 200TON/MONTH
Product Details
Standard DIN557 Size M5-M20
Surface Treatment H.D.G Grade 6 8
Sample Free Sample Process Cold Forging
Packing 25kg Carton+900kg/Pallet Material Carbon Steel
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DIN 557 M16 Square Nuts

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Cl8 M16 Square Nuts

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M5 Din 557 Square Nut Dimensions

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Product Description

Power Fittings DIN557 Class6 Cl8 HDG M16 Square Nuts

 

Specification

 

Square Nuts Our expertise enables us to manufacture, export and supply a broad range of Square Nuts. Offered nuts are designed with high level of accuracy in tandem with the international standards. Manufactured using superior quality raw material with the help of advanced technology;

 

 

DIN 557 - Square Nuts

Current norm: DIN 557
Equivalent norms: CSN 021624; PN 82151; UNI 5597;

Legend:

m - height of the nut
d - the nominal diameter of the thread
s - size square
mw - height

Makings:QBH

Steel: 6  8
Stainless: A2, A4
Plastic: -
Non Ferrous: -
Thread: 7H

 

Table according to DIN 557:

dimensions in mm

Thread
size d
M5 M6 M8 M10 M12 M16
P 0,8 1 1,25 1,5 1,75 2
dw min. 6,7 8,7 11,5 14,5 15,5 16,5 17,2 22
e max. 11,3 14,1 18,4 22,6 24 25,4 26,9 33,9
min. 9,93 12,53 16,34 20,24 21,54 22,84 24,02 30,11
m Nominal size max. 4 5 6,5 8 10 13
min. 3,52 4,52 5,92 7,42 9,42 12,3
mw min. 2,5 3,2 4,1 5,2 6,6 8,6
s Nominal size max. 8 10 13 16 17 18 19 24
min. 7,64 9,64 12,57 15,57 16,57 17,57 18,48 23,16
weight
kg/1000pcs
1,31 2,77 5,5 10,7 13 16,3 19,1 38,2

 

 

Process flow

 

Cold forging

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

 

 

Product Grade

 

Class 6 and 8

 

 

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

 

 

 

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

 

Metric DIN 557 regular pattern square nuts are four sided nuts. Their geometry provides a greater surface area to apply higher torque when tightening and also a greater surface are in contact with the part being fastened, thereby increasing the resistance to loosening.

 

 

 

The engineering case

 

Bangladesh power facilities accessories project

 

Power Fittings DIN557 Class6 Cl8 HDG M16 Square Nuts 0

 

Power Fittings DIN557 Class6 Cl8 HDG M16 Square Nuts 1

 

Power Fittings DIN557 Class6 Cl8 HDG M16 Square Nuts 2