Qbh Custom-Made M24 M27 M30 HDG Black Zp Yzp Torsional Shear Tension Control Tc Bolt Nut Washer Rail Switches and Crossings Spare Parts
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Product Highlights
- Customized Fasteners: Designed and manufactured according to buyers' specifications, samples, and drawings.
- 10 Years After-sales Service: Comprehensive after-sales support guaranteed for 10 years.
- Free Sample Available: Free samples provided for standard fasteners from Jiaxing City.
- Wide Size Range: Available in sizes M12 to M30 to meet various structural needs.
- Multiple Finish Options: Plates available in Plain, Black, Z.P., Y.Z.P., H.D.G., and more.
- High Strength Class 10.9S: Made from medium carbon steel with superior tensile strength.
- Visual Installation Indication: Spline snaps off to provide visual confirmation of proper tension.
- Universal Application: Suitable for bridges, beam-to-column connections, and rail switches.
Product Attributes
- Customization
- Available
- Customized
- Customized
- Style
- Assembled Set
- Model NO.
- QBH-TC Bolt
- Sample
- Free Sample
- Used
- Machinery, Chemical Industry, Environmental, Build
- After-sales Service
- 10 Years
- Type
- Tension Control Bolt
- Transport Package
- Bulk/Boxes in Cartons, Bulk in Polybags/Buckjets
- Specification
- M12-M30
- Trademark
- QBH
- Origin
- Jiaxing, Zhejiang
- Production Capacity
- 500tons/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.
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Product Description

Product Descriptions:
GB/T 3632 Sets Of Torshear Type High Strength Bolt Hexagon Nut And Plain Washer For
Steel Structures
Tension Control Bolts, TC Bolts or Twist Off Bolts are now the most popular choice in high-strength
structural bolting and formally recognized by the AISC (American Institute of Steel Construction) and
the RCSC (Research Council on Structural Connections) as an approved installation method.
A Tension Control Bolts consists of 1 bolt, 1 nut and 1 washer, pre-assembled and there for they are
shown, 1 lot number, on the certification paperwork. Tension Control Bolts assemblies come with their
own built in tension control device (spline) to ensure dependable and repeatable tension levels are
achieved with each installation. They are installed with a specialized electric shear wrench that has an
outer socket that turns the nut counterclockwise, while grabbing the spline with the inner socket turning
it clockwise. When the proper tension level has been achieved the spline snaps off giving you a visual
indication of proper installation.
TC Bolts use a proprietary lubrication on the nut, to control the clamping force of the bolt and ensure
the appropriate tension level is achieved. Because of this proprietary lubrication, it is NOT permissible
to re-lubricated TC bolts, in the field, only the manufacture of a TC bolt can re-lubricate a TC assembly.
Tension Control Bolts and the innovative Shear Wrench system are the lowest cost method for installing
preloaded or High Strength Friction Grip bolts.
QBH TC Bolts as they are commonly known throughout the world, are replacing conventional
high strength friction grip bolts and swaged collar rivets simply because they are quick and
easy to install using lightweight electric shear wrenches. Guaranteed tension together with
visual inspection removes the likelihood of operator error and ensures engineers that connections
are tightened in accordance with specifications.
Our System HRC structural bolting assemblies are used in a wide range of applications, from bridge
splice plates to beam-to-column connections, from stadia roof trusses to rail switches and crossings.
The combination of a TC bolts superior tensile strength and phenomenal ductility result in a truly
universal bolt that can be employed in almost all steelwork connections.

Tension Control Bolt Advantages:
- Proper tension ensured
- Dependable & Repeatable results
- Can be used in shear or in tension
- One man installation on one side of the structure
- Light weight electric wrench can install multiple diameters
- Quick & easy installation, no match marking required
- Reduced job site noise

Specifications
| STYLE | TORSIONAL SHEAR BOLTS ASSEMBLED SET [ NUT+BOLT+WASHER ] |
| STANDARD | GB/T 3632-2008 |
| SUPPLIER | QBH |
| SHOP | qbfastener.en.made-in-china.com |
| SIZE | M12-M30 |
| FINISH | PLAIN, BLACK, Z.P., Y.Z.P., H.D.G., DACROMET, GEOMET, NICKLE PLATED, MECHANICAL ZINC PLATED, ETC. |
| CLASS | 10.9S |
| MATERIAL | MEDIUM CABON STEEL, CUSTOMIZED |
| Process | Cold Forging,Hot Forging |
| PACKING |
BULK/BOXES IN CARTONS, BULK IN POLYBAGS/BUCKETS, ETC. |
| PALLET |
SOLID WOOD PALLET, PLYWOOD PALLET, TON BOX/BAG, ETC.
|

Materials and Chemical Compstition
SCM435
| 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 |
More Details




All Your Standards Can be Customized :

Certifications & Package

Our Services
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
This supplier has been audited by BV. Verify the report on the official BV website with ID "MIC-ASR2531789". Items marked "" are certified.
Company Profile
Jiaxing City Qunbang Hardware Co., Ltd. (brand: QBH) is a fastener enterprise integrating production, design, sales, and after-sales service. The company is located in the Hangzhou-Jiaxing-Huzhou Plain, close to Shanghai, Ningbo, and Zhapu ports. Thanks to its superior geographical position and convenient transportation, the company has natural advantages for export business.
The company mainly produces high-strength fasteners, with bolts and nuts as its core products. The main standards include DIN, ANSI/ASME, JIS, UNI, ISO, AS, BS, GB, and others. Our products are widely used in bridges, roads, petroleum pipeline facilities, wind power generation, and steel structure projects. Carbon steel bolts are available in grades 4.8, 5.8, 6.8, 8.8, 10.9, and 12.9; Nuts in grades 4, 6, 8, and 10. Stainless steel fasteners are mainly made of 201, 304, and 316. Since its establishment, QBH has undergone over ten years of development. We are equipped with comprehensive testing equipment and maintain good cooperation with SGS and TUV. Each batch of products is accompanied by a 3.1 or 3.2 certificate, further ensuring quality.
In 2017, we registered the trademark "QBH" in China, the EU, and the United States, and obtained six fastener product patents. We have also been awarded the Zhejiang Province Science and Technology Small and Medium-sized Enterprise certificate and the ISO9001: 2000 certificate. As the company continues to grow and customers demand more diversified products, we have further strengthened our manufacturing capabilities.
In 2025, QBH officially expanded with two new factories:
China Factory (Ningbo):
NINGBO QB FASTENER MANUFACTURING Co., Ltd.
Address: No. 100, Tianshen Road, Jiulonghu, Zhenhai, Ningbo City, Zhejiang Province, China
Vietnam Factory:
KHAI TIN HUY PRODUCTION AND TRADING COMPANY LIMITED
Address: Street No. 1, Thuan Dao Expanded Industrial Park, Long Dinh Ward, Can Duoc District, Long An, Vietnam
With the addition of these new facilities, QBH has significantly increased production capacity, optimized cost structures, and enhanced supply chain flexibility. Starting from 2015, QBH had already begun cooperating with several fastener enterprises to enrich product variety and improve pricing. Now, with our own manufacturing bases in both China (Ningbo) and Vietnam, we can offer even more competitive prices, shorter lead times, and better quality control across a wider range of products.
QBH has always been committed to providing customers with efficient, convenient services and high-quality products. Our mission is to create a pleasant trading experience for our customers, deeply participate in their construction projects, and make progress together. This means we continuously strive to offer better and more cost-effective solutions, helping customers stand out in a competitive market.
QBH promises to always provide you with excellent quality, efficient service, and very competitive prices. We believe our cooperation is not only business-based but also an opportunity to open new markets together on a win-win basis. We thank all our past customers for their great support and help, which have allowed us to grow step by step. At the same time, we look forward to establishing new business relationships with you in the near future.
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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