Qbh Carriage Bolts DIN603 Cl. 4.8/6.8 M5-M20
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Product Highlights
- Comprehensive Material Options: Available in Carbon Steel and Stainless Steel grades including SS304, SS316, and 10.9/12.9 strength classes.
- Diverse Surface Finishes: Offers Zinc Plating (Yellow/White/Blue), Hot Dip Galvanized, Black Oxide, Dacromet, and Nickel Plated options.
- Customization Capability: Supports customized fasteners based on customer samples and drawings with max body length up to 800mm.
- Strict Quality Control: Every production link is inspected with MTC and mill certificates provided upon completion.
- Fast Delivery for Stock Items: In-stock goods can be delivered within 2-5 days for immediate needs.
- Flexible Payment Terms: Accepts T/T, LC for general orders, and PayPal, Western Union for small orders or samples.
- Professional Manufacturer: Over 15 years of experience with a team engaged in fastener export since 2005.
- Free Sample Service: Provides free samples for standard fasteners to help customers evaluate product quality.
Product Attributes
- Customization
- Available
- Material
- Carbon Steel
- Type
- Mushroom Head
- Model NO.
- QBH-C-DIN603-ZP, QBH-C-DIN603-HDG
- Connection
- Common Bolt
- Head Style
- Mushroom Head
- Standard
- DIN
- Grade
- 4.8/6.8
- Application
- Machinery
- Finish
- Blue-White Zinc Plated
- Max Body Length
- 800mm/32in
- Transport Package
- Carton, Polybag, Barrel
- Specification
- M5-M20
- Trademark
- QBH
- Origin
- Jiaxing City, Zhejiang Province.
- HS Code
- 7318151001
- Production Capacity
- 500 Tons/Month
- Package Size
- 26.00cm * 26.00cm * 14.00cm
- Package Gross Weight
- 25.000kg
Shipping
- Shipping Cost:
- Contact the supplier about freight and estimated delivery time.
Online Trading Protection
- Payment Guarantee
-
Platform-protected payments with refund support for eligible order issues.
- Platform Logistics
- Clearer shipment tracking with platform-supported logistics.
- Inspection Service
- Optional pre-shipment inspection for quality and quantity checks.
- After-Sales & Dispute Handling
- Platform-assisted dispute resolution, including refunds or returns when applicable.
Only orders placed and paid through Made-in-China.com Secured Trading are eligible for payment protection and the corresponding platform services.
Product Images of Qbh Carriage Bolts DIN603 Cl. 4.8/6.8 M5-M20
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Qbh Carriage Bolts DIN603 Cl. 4.8/6.8 M5-M20 -
Qbh Carriage Bolts DIN603 Cl. 4.8/6.8 M5-M20 -
Qbh Carriage Bolts DIN603 Cl. 4.8/6.8 M5-M20 -
Qbh Carriage Bolts DIN603 Cl. 4.8/6.8 M5-M20 -
Qbh Carriage Bolts DIN603 Cl. 4.8/6.8 M5-M20 -
Qbh Carriage Bolts DIN603 Cl. 4.8/6.8 M5-M20 -
Qbh Carriage Bolts DIN603 Cl. 4.8/6.8 M5-M20
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Product Description
Product Description
DIN 603 - Mushroom head square neck bolts
Current norm: DIN 603
Equivalent norms: ISO 8677; CSN 021319; PN 82406; UNI 5731;
| STYLE | CARRIAGE BOLTS |
| STANDARD | DIN603 |
| Model No. | QBH-C-DIN603-ZP, QBH-C-DIN603-HDG |
| Supplier | QBH |
| SIZE | M5-M20 |
| FINIISH | PLAIN, BLACK,Z.P., Y.Z.P., H.D.G,. dacromet, geomet, nickle plated, machanical zinc plated, ect. |
| CLASS | Cl.4.8/6.8 |
| MATERIAL | Low carbon |
| PACKING | bulk/boxes in cartons, bulk in polybags /buckets, ect. |
| PALLET | solid wood pallet, plywood pallet, ton box/bag, ect. |
| Products name | Round Head Square Neck Carriage Bolt DIN603 Carbon Steel WZP | ||||||
| Standard: | DIN,ASTM/ANSI JIS EN ISO,AS,GB | ||||||
| Model No. | QBH-C-DIN603-ZP, QBH-C-DIN603-HDG |
||||||
| Supplier | QBH | ||||||
| Material | Stainless Steel: SS201, SS303, SS304, SS316,SS316L,SS904L,F593 | ||||||
| Steel Grade: DIN: Gr.4.6,4.8,5.6,5.8,8.8,10.9,12.9; SAE: Gr.2,5,8; ASTM: 307A,307B,A325,A394,A490,A449, | |||||||
| Finishing | Zinc(Yellow,White,Blue,Black),Hop Dip Galvanized(HDG),Black Oxide, Geomet,Dacroment,anodization,Nickel plated,Zinc-Nickel plated |
||||||
| Production Process |
M2-M24:Cold Froging,M24-M100 Hot Forging, Machining and CNC for Customized fastener |
||||||
| Customized Products Lead time |
Busy season:15-30days,Slack seaon:10-15days | ||||||
| Stock Products | Steel:4.8Grade DIN6923,8.8Grade 10.9Grade of GB5783 and GB5782 Stainless steel: All DIN Standard stainless steel Bolt |
||||||
| Free Samples for standard fastener | |||||||
Legend:
b - length of the thread (at least)
l - length of bolt
d - the nominal diameter of the thread
k - head height
ds - diameter of the screw shank
dk - head diameter
f - height squared
v - width of the square
r1 - Head radius
lg - length of the shank to thread
ls - length of the shank to the start of the thread
Makings:
Steel: 4.8,5.8,8.8
Stainless: A2, A4
Thread: 6g
Notes:
Table according to DIN 603:
| Thread d | M5 | M6 | M8 | M10 | M12 | M16 | M20 | |
| Product Name | DIN 603 Square Neck Round Head Carriage Bolt | |||||||
| Supplier | QBH | |||||||
| P | 0,8 | 1 | 1,25 | 1,5 | 1,75 | 2 | 2,5 | |
| b | l < 125mm | 16 | 18 | 22 | 26 | 30 | 38 | 46 |
| 125 < l < 200mm | 22 | 24 | 28 | 32 | 36 | 44 | 52 | |
| l > 200mm | - | - | 41 | 45 | 49 | 57 | 65 | |
| dk | max. | 13,55 | 16,55 | 20,65 | 24,65 | 30,65 | 38,8 | 46,8 |
| min. | 12,45 | 15,45 | 19,35 | 23,35 | 29,35 | 37,2 | 45,2 | |
| ds | max. | 5 | 6 | 8 | 10 | 12 | 16 | 20 |
| min. | 4,52 | 5,52 | 7,42 | 9,42 | 11,3 | 15,3 | 19,16 | |
| f | max. | 4,1 | 4,6 | 5,6 | 6,6 | 8,75 | 12,9 | 15,9 |
| min. | 2,9 | 3,4 | 4,4 | 5,4 | 7,25 | 11,1 | 14,1 | |
| k | max. | 3,3 | 3,88 | 4,88 | 5,38 | 6,95 | 8,95 | 11,05 |
| min. | 2,7 | 3,12 | 4,12 | 4,62 | 6,05 | 8,05 | 9,95 | |
| r1 | approx. | 10,7 | 12,6 | 16 | 19,2 | 24,1 | 29,3 | 33,9 |
| r2 | max. | 0,5 | 0,5 | 0,5 | 0,5 | 1 | 1 | 1 |
| r3 | max. | 0,75 | 0,9 | 1,2 | 1,5 | 1,8 | 2,4 | 3 |
| v | max. | 5,48 | 6,48 | 8,58 | 10,58 | 12,7 | 16,7 | 20,84 |
| min. | 4,52 | 5,52 | 7,42 | 9,42 | 11,3 | 15,3 | 19,16 | |
Dimensions
| Nom. Dia. (d) | M6 | M8 | M10 | M12 | M16 | M20 | |
| Product Name | DIN 603 Square Neck Round Head Carriage Bolt | ||||||
| Supplier | QBH | ||||||
| Thread Pitch | 1 | 1.25 | 1.5 | 1.75 | 2 | 2.5 | |
| Thread Length (b) | L < 125mm | 18 | 22 | 26 | 30 | 38 | 46 |
| 125-200mm | 24 | 28 | 32 | 36 | 44 | 52 | |
| L > 200mm | - | 41 | 45 | 49 | 57 | 65 | |
| dk | Max. | 16.55 | 20.65 | 24.65 | 30.65 | 38.8 | 46.8 |
| f | Max. | 4.6 | 5.6 | 6.6 | 8.75 | 12.9 | 15.9 |
| k | Max. | 3.88 | 4.88 | 5.38 | 6.95 | 8.95 | 11.05 |
| v | Max. | 6.48 | 8.58 | 10.58 | 12.7 | 16.7 | 20.84 |
| L | WEIGHT IN KG/1000 PCS | ||||||
| 16 | 6.90 | ||||||
| 20 | 7.60 | 13.80 | 22.70 | ||||
| 25 | 8.50 | 15.40 | 25.20 | ||||
| 30 | 9.60 | 17.00 | 27.70 | 45.70 | |||
| 35 | 10.70 | 19.00 | 30.20 | 49.40 | |||
| 40 | 11.80 | 21.00 | 32.70 | 53.10 | |||
| 45 | 12.90 | 23.00 | 35.80 | 56.80 | |||
| 50 | 14.00 | 25.00 | 38.90 | 61.20 | 119.00 | ||
| 55 | 15.10 | 26.90 | 42.00 | 65.60 | 126.00 | ||
| 60 | 16.20 | 28.90 | 45.10 | 70.00 | 133.00 | ||
| 65 | 17.30 | 30.90 | 48.20 | 74.40 | 141.00 | ||
| 70 | 18.40 | 32.90 | 51.30 | 78.80 | 149.00 | 247.00 | |
| 80 | 20.60 | 36.80 | 57.50 | 87.00 | 165.00 | 272.00 | |
| 90 | 22.80 | 40.80 | 63.70 | 96.00 | 181.00 | 297.00 | |
| 100 | 25.00 | 44.80 | 69.90 | 105.00 | 197.00 | 322.00 | |
| 110 | 27.20 | 48.80 | 76.10 | 114.00 | 213.00 | 347.00 | |
| 120 | 29.40 | 52.80 | 82.30 | 123.00 | 229.00 | 372.00 | |
| 130 | 31.60 | 56.80 | 88.50 | 132.00 | 245.00 | 397.00 | |
| 140 | 32.80 | 60.80 | 95.00 | 141.00 | 261.00 | 422.00 | |
| 150 | 35.00 | 64.80 | 101.00 | 150.00 | 277.00 | 447.00 | |
| 160 | 107.00 | 159.00 | 293.00 | 497.00 | |||
| 180 | 119.00 | 177.00 | 325.00 | 547.00 | |||
| 200 | 131.00 | 195.00 | 357.00 | 597.00 | |||
Class4.8 Class5.8 Class6.8 Class8.8 Class10.9 Class12.9
| NO. | Mechanical or physical property |
Property class | |||||||||||
| 4.6 | 4.8 | 5.6 | 5.8 | 6.8 | 8.8 | 9.8 | 10.9 | 12.9/12.9 | |||||
| D≤16mma | d>16mmb | d≤16mm | |||||||||||
| Supplier | QBH | ||||||||||||
| 1 | Tensile strength Rm,Mpa |
nom.c | 400 | 500 | 600 | 800 | 900 | 1000 | 1200 | ||||
| max. | 400 | 420 | 500 | 520 | 600 | 800 | 830 | 900 | 1040 | 1220 | |||
| 2 | Lower yield strength ReL,Mpa |
nom.c | 240 | -- | 300 | -- | -- | -- | -- | -- | -- | -- | |
| max. | 240 | -- | 300 | -- | -- | -- | -- | -- | -- | -- | |||
| 3 | Stress at 0,2 % nonproportional elongation Rp0.2,Mpa |
nom.c | -- | -- | -- | -- | -- | 640 | 640 | 720 | 900 | 1080 | |
| max. | -- | -- | -- | -- | -- | 640 | 660 | 720 | 940 | 1100 | |||
| 4 | Stress at 0,0048 d non-proportional elongation for full-size fasteners Rpf,Mpa |
nom.c | -- | 320 | -- | 400 | 480 | -- | -- | -- | -- | -- | |
| max. | -- | 340e | -- | 420e | 480e | -- | -- | -- | -- | -- | |||
| 5 | Stress under proof load Spf,Mpa |
nom. | 225 | 310 | 280 | 380 | 440 | 580 | 600 | 650 | 830 | 970 | |
| Proof Sp,nom/ReL min Or strength Sp,nom/Rp0.2min Or rati Sp,nom/Rpf min |
0.94 | 0.91 | 0.93 | 0.9 | 0.92 | 0.91 | 0.91 | 0.9 | 0.88 | 0.88 | |||
| 6 | Percentage elongation after fracture for machined test pieces,A,% |
min. | 22 | -- | 20 | -- | -- | 12 | 12 | 10 | 9 | 8 | |
| 7 | Percentage reduction of area after fracture for machined test pieces,Z,% |
min. | -- | 52 | 48 | 48 | 44 | ||||||
| 8 | Elongation after fracture for full-size fasteners,Af |
min. | -- | 0.24 | -- | 0.22 | 0.2 | -- | -- | -- | -- | -- | |
| 9 | Head soundness | No fracture | |||||||||||
| 10 | Vickers hardness, HV, F≥98N |
min. | 120 | 130 | 155 | 160 | 190 | 250 | 255 | 290 | 320 | 385 | |
| max. | 220g | 250 | 320 | 335 | 360 | 380 | 435 | ||||||
| 11 | Brinell hardness, HBW ,F=30D² |
min. | 114 | 124 | 147 | 152 | 181 | 238 | 242 | 276 | 304 | 366 | |
| max. | 209g | 238 | 304 | 318 | 342 | 361 | 414 | ||||||
| Supplier | QBH | ||||||||||||
| 12 | Rockwell hardness,HRB , HRB |
min. | 67 | 71 | 79 | 82 | 89 | ||||||
| max. | 95g | 99.5 | |||||||||||
| Rockwell hardness, HRC |
min. | -- | 22 | 23 | 28 | 32 | 39 | ||||||
| max. | -- | 32 | 34 | 37 | 39 | 44 | |||||||
| 13 | Surface hardness HV 0.3 |
max. | -- | h | h,j | h,j | |||||||
| 14 | Height of non-decarburized thread zone,E,mm | min. | -- | 1/2H1 | 2/3H1 | 3/4H1 | |||||||
| Depth of complete decarburization in the thread,G,mm |
max. | -- | 0.015 | ||||||||||
| 15 | Reduction of hardness after retempering,HV | max. | -- | 20 | |||||||||
| 16 | Breaking torque, MB,N·m |
min. | -- | in accordance with ISO 898-7 | |||||||||
| 17 | Impact strength, KVK,I,J |
min. | -- | 27 | -- | 27 | 27 | 27 | 27 | m | |||
| 18 | Surface integrity in accordance with | ISO 6157-1n | ISO 6157-3 | ||||||||||
| a Values do not apply for structural bolting. b For structural bolting d W M12. c Nominal values are specified only for the purpose of the designation system for property classes.See Clause 5. d In cases where the lower yield strength ReL cannot be determined, it is permissible to measure the stress at 0,2 % non-proportional elongation Rp0,2. e For the property classes 4.8, 5.8 and 6.8 the values for Rpf min are under investigation. The present values are given for calculation of the proof stress ratio only. They are not test values. f Proof loads are specified in Tables 5 and 7. g Hardness determined at the end of a fastener shall be 250 HV, 238 HB or 99,5 HRB maximum. h Surface hardness shall not be more than 30 Vickers points above the measured core hardness of the fastener when determination of both surface hardness and core hardness are carried out with HV 0,3. i Any increase in hardness at the surface which indicates that the surface hardness exceeds 390 HV is not acceptable. j Any increase in hardness at the surface which indicates that the surface hardness exceeds 435 HV is not acceptable. k Values are determined at a test temperature of −20 °C, see 9.14. l Applies to d W 16 mm. m Value for KV is under investigation. n Instead of ISO 6157-1, ISO 6157-3 may apply by agreement between the manufacturer and the purchaser. |
|||||||||||||
QBH 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 |
QBH 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 |
QBH 10B21
| CHEMICAL COMPOSI % | ||||||
| C | Si | Mn | P | S | Cr | B |
| 0.2 | 0.04 | 0.81 | 0.017 | 0.007 | 0.017 | 0.0021 |
QBH 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 |
QBH 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 |
QBH 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 |
QBH 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 |
Our Services
Professional Manufacturer: All of our Fastener are designed and manufactured according to buyers'
specification and performance.
Quality is guaranteed: Durability testing and critical technical design to enhance fasteners lifetime.
Cost effective: Competitive prices with professional factory supply
Perfect fastening solution with 15+ years experiences to solve your problem: Wide range of parts selection.
Customized Ideal Fasteners: customized services according to the samples and drawings offered
Free Samples for Standard Fastener from Jiaxing City Qunbang Hardware
We Promise:
1.High quality
2. Competitive price
3. The shortest delivery
4. The fastest response
5. The best service
FAQ
1.What's your experience like?
Our general manager has been engaged in the export of fasteners since 2005.
Our team can provide you with professional fasteners selling and smooth export services.
2.How about your price?
High quality products with reasonable price. Please give me a inquire, We will quoted you a price
for you refer at once.
3. How do you control your quality?
We require the quality control department to inspect every production link of each shipment. And we can provide you MTC and mill certificate when the goods is finished.
4.How about your delivery time?
General speaking, if the goods is in stock, we can delivery them with 2-5days, If the quantity is 1-2container, we can give you with 18-25days,if the quantity is more than 2 container and you are very urgent, we can let factory priority
produce your goods.
5.What is your packing?
Our packing is 20-25kg for one carton,36 or 48pcs cartons for one pallet. One pallets is about 900-960kg, We also can make customer's logo on the cartons. Or we customized cartons according to
customers' requirement.
6.What is your payment term?
We can accept T/T,LC for general order ,Paypal and Western union for small order or samples order.
Awaiting for your kind inquiry! Thanks & best regards!
For more information: http://qbfastener.en.made-in-china.com
About the Supplier
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Company Profile
Jiaxing City Qunbang Hardware Co, Ltd is a production\design\sales and after-sales as one of the fasteners business, The company is located in HangjiaHu Plain, close to Shanghai\Ningbo\Zhapu 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/ANSI\ASME/JIS/UNI/ISO/AS/BS/GB and so on. The product massively applies in the bridge\road\the petroleum pipeline facility\the 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.
About Our Factory & Business Background
- Address
- No375, Tongle Road, Nanhu District, Jiaxing City, Zhejiang Provice, Jiaxing, Zhejiang, China
- Terms of Payment
- LC, T/T, D/P, PayPal, Western Union, Small-amount payment, OA
- International Commercial Terms(Incoterms)
- FOB, CFR, CIF, DDP, EXW, Others
- Average Lead Time
-
Peak Season Lead Time: one month
Off Season Lead Time: within 15 workdays - Nearest Port
- SHANGHAI, NINGBO
Our Production Capability & Technical Expertise
- Main Products
- Fastener, Nuts, Bolts, Thread Rod, Washer, Hex Nuts, Hex Bolts, A194-2h, A325/A325m, A490/A490m
Our Industry Experience & Global Business Record
- Export Year
- 2004-01-10
- Main Markets
- North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe
FAQ
- What is your experience like?
- Our general manager has been engaged in the export of fasteners since 2005. Our team can provide you with professional fasteners selling and smooth export services.
- How about your price?
- High quality products with reasonable price. Please give me a inquire, We will quoted you a price for you refer at once.
- How do you control your quality?
- We require the quality control department to inspect every production link of each shipment. And we can provide you MTC and mill certificate when the goods is finished.
- How about your delivery time?
- General speaking, if the goods is in stock, we can delivery them with 2-5days, If the quantity is 1-2container, we can give you with 18-25days,if the quantity is more than 2 container and you are very urgent, we can let factory priority produce your goods.
- What is your packing?
- Our packing is 20-25kg for one carton,36 or 48pcs cartons for one pallet. One pallets is about 900-960kg, We also can make customer's logo on the cartons. Or we customized cartons according to customers' requirement.
- What is your payment term?
- We can accept T/T,LC for general order ,Paypal and Western union for small order or samples order.
Send your message to this supplier
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