Jiaxing City Qunbang Hardware Co., Ltd
| Payment Terms | L/C, T/T |
| Delivery Time | 30-60 days |
| Packaging Details | 25kg Carton+900kg/Pallet |
| Supply Ability | 200TON/MONTH |
| 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 |
| Brand Name | QBH |
| Model Number | DIN557 |
| Certification | ISO9001 |
| Place of Origin | CHINA |
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Product Specification
| Payment Terms | L/C, T/T | Delivery Time | 30-60 days |
| Packaging Details | 25kg Carton+900kg/Pallet | Supply Ability | 200TON/MONTH |
| 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 |
| Brand Name | QBH | Model Number | DIN557 |
| Certification | ISO9001 | Place of Origin | CHINA |
| High Light | DIN 557 M16 Square Nuts ，Cl8 M16 Square Nuts ，M5 Din 557 Square Nut Dimensions | ||
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;
m - height of the nut
d - the nominal diameter of the thread
s - size square
mw - height
Steel: 6 8
Stainless: A2, A4
Plastic: -
Non Ferrous: -
Thread: 7H
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
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
Company Details
Business Type:
Manufacturer,Trading Company,Seller
Year Established:
2014
Total Annual:
3000-4500
Employee Number:
100~150
Ecer Certification：
Verified Supplier
Jiaxing City Qunbang Hardware Co,ltd is a productiondesignsales and after-sales as one of the fasteners business,The company is located in HangjiaHu Plain,close to ShanghaiNingboZhapu ports.The geographical position is superior,the transportation is convenient,has created the nat... Jiaxing City Qunbang Hardware Co,ltd is a productiondesignsales and after-sales as one of the fasteners business,The company is located in HangjiaHu Plain,close to ShanghaiNingboZhapu ports.The geographical position is superior,the transportation is convenient,has created the nat...
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