Product Details
ISO 8674 Metric Fine Pitch Thread M6 To M36 Carbon Steel Nuts
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
Specification

Thread Size D | |
| P | Pitch | Fine thread-1 | | Fine thread-2 | | c | max | | min | | da | max | | min | | dw | min | | e | min | | m | max | | min | | mw | min | | s | max=nominal size | | min | | | 1 | 1 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 2 | 2 | 2 | 2 | 3 | | - | (1.25) | (1.25) | - | - | - | (2) | - | - | - | - | - | - | | 0.6 | 0.6 | 0.6 | 0.6 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | | 0.15 | 0.15 | 0.15 | 0.15 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | | 8.75 | 10.8 | 13 | 15.1 | 17.3 | 19.5 | 21.6 | 23.7 | 25.9 | 29.1 | 32.4 | 35.6 | 38.9 | | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 | 27 | 30 | 33 | 36 | | 11.63 | 14.63 | 16.63 | 19.64 | 22.49 | 24.85 | 27.7 | 31.35 | 33.25 | 38 | 42.75 | 46.55 | 51.11 | | 14.38 | 17.77 | 20.03 | 23.36 | 26.75 | 29.56 | 32.95 | 37.29 | 39.55 | 45.2 | 50.85 | 55.37 | 60.79 | | 7.5 | 9.3 | 12 | 14.1 | 16.4 | 17.6 | 20.3 | 21.8 | 23.9 | 26.7 | 28.6 | 32.5 | 34.7 | | 7.14 | 8.94 | 11.57 | 13.4 | 15.7 | 16.9 | 19 | 20.5 | 22.6 | 25.4 | 27.3 | 30.9 | 33.1 | | 5.71 | 7.15 | 9.26 | 10.72 | 12.56 | 13.52 | 15.2 | 16.4 | 18.08 | 20.32 | 21.84 | 34.72 | 26.48 | | 13 | 16 | 18 | 21 | 24 | 27 | 30 | 34 | 36 | 41 | 46 | 50 | 55 | | 12.73 | 15.73 | 17.73 | 20.67 | 23.67 | 26.16 | 29.16 | 33 | 35 | 40 | 45 | 49 | 53.8 | |
Product Grade
Class 5 Class 6 Class 8 Class 10 Class 12
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
Product Application The screw steel is widely used in the construction of civil engineering, such as houses, bridges, roads, etc. To highway, railway, bridges, culverts, tunnels, dams, flood control and other public facilities, small building foundation, beams, columns and walls, plates, rebar structure is
Company Profile
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 natural superiority for the export.
The company mainly produces high-strength fasteners business, bolts
and nuts are the main,the main standard are
DIN/ANSIASME/JIS/UNI/ISO/AS/BS/GB and so on.The product massively
applies in the bridgeroadthe petroleum pipeline facilitythe wind
power generation and steel structure project. Carbon steel bolts
mainly have 4.8、5.8、6.8、8.8、10.9、12.9,nuts mainly have 4、6、8、10,the
main material of stainless steel fastener is 201/304/316.QBH from its establishment to he present,after ten years of
development,it is equipped with perfect testing equipment,and SGS
and TUV have a good cooperation,each batch of products is
accompanied by a 3.1 or 3.2 certificate,further escort the quality
of the company.
In 2017,we registered the trademark “QBH” in the CHINA、EU、United
States,and has six fastener product patents,has obtained the
Zhejiang Province science and technology small and medium-sized
enterprise certificate as well as the ISO9001:2000 cerfiticate.With
the continuous development and expansion of the company,as well as
customer demand for product diversification,on the basis of its
original production,in order to further enhance the potential for
cooperation with customers,as well as to provide competitive
prices.Starting in 2015,QBH has taken part in several fastener
enterprises one after another,the product variety is more abundant
and the price is more advantageous,and the quality can also be well
controlled. QBH has always been to provide customers with efficient
and convenient service and quality products,and create a pleasant
trading process for customers for the mission,deeply participate in
customer construction projects and make progress together with
customers,this means that we need to provide better and more
cost-effictive solutions,so as to help customers stand out from the
competition.
QBH promises to always provide you with excellent quality,efficient
service and very competitive prices.We believe that the cooperation
between us is not only based on business,but also hope that we can
open new markets on the basis of win-win situation.And thank all
the customers in the past to give us great support and help,make us
grow up gradually,at the same time also hope that in the nere
future,and you can establish new business relations.