Jiaxing City Qunbang Hardware Co., Ltd
| Payment Terms | L/C, T/T, Q/A |
| Supply Ability | 200TON/MONTH |
| Delivery Time | 30days |
| Packaging Details | 25kg Carton+900kg/Pallet |
| Material | stainless steel 304 316 410 |
| Size | M6-M48 |
| Grade | 6/8/10 |
| Head Style | Hexagonal |
| Standard | Ifi128 |
| Process | Cold Forming |
| Brand Name | QBH |
| Model Number | Ifi128 |
| Certification | ISO9001 |
| Place of Origin | CHINA |
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Product Specification
| Payment Terms | L/C, T/T, Q/A | Supply Ability | 200TON/MONTH |
| Delivery Time | 30days | Packaging Details | 25kg Carton+900kg/Pallet |
| Material | stainless steel 304 316 410 | Size | M6-M48 |
| Grade | 6/8/10 | Head Style | Hexagonal |
| Standard | Ifi128 | Process | Cold Forming |
| Brand Name | QBH | Model Number | Ifi128 |
| Certification | ISO9001 | Place of Origin | CHINA |
| High Light | thick hexagon coupling nut ，long hardware coupling nut ，ifi128 non standard fastener | ||
Product Overview
IFI 128 is an industrial fastener standard that specifies the requirements for heavy-duty hexagon coupling nuts, characterized by their extended length and increased thickness compared to standard nuts. As a specialized type of threaded connector, these "long nuts" or "coupling nuts" are engineered to join two threaded rods, studs, or other male-threaded components end-to-end. The IFI 128 standard ensures precise dimensional consistency, mechanical strength, and thread integrity for these critical connecting elements. Manufactured from high-grade steel and often available in various finishes and property classes, they provide a robust and reliable solution for creating long, continuous tensile connections or for spacing applications in construction, machinery, and structural frameworks.
| Style | Ifi128 Thick Hexagon Nuts Hardware Long Coupling Nut |
| Standard | Ifi128 |
| Size | M6-M48 |
| Class | 4, 6, 8, 10, 12 |
| Coating | Black, Zinc, HDG, Heat Treatment, Plain, etc. |
| Material | Stainless Steel & Carbon Steel |
| Packing | bulk/ boxes in cartons, bulk in poly bags/ buckets, etc. |
| Pallet | solid wood pallet, plywood pallet, ton box/bag, etc. |
| Shipment Port | Shanghai & Ningbo |
Key Specifications
The standard governs critical dimensions, including the extended length (which is a multiple of the nominal diameter), width across flats, thread pitch, and overall height. IFI 128 coupling nuts are typically produced to meet defined mechanical property grades (such as Grade 2H or higher), ensuring consistent tensile strength, proof load, and hardness. Threads are precisely machined to relevant standards (e.g., UNC, UNF) to guarantee proper engagement and load transfer between the connected components.
Primary Design Rationale
The extended length is the core design feature, providing a deep, internal through-thread. This allows for significant thread engagement with both connecting pieces, distributing the axial load over a larger area and minimizing stress concentration. The full hexagon profile along the entire length offers superior wrenchability for tightening, even when the nut is positioned midway along a rod. This design ensures a connection that is as strong as or stronger than the rods being joined, preventing thread jump, stripping, or joint failure under tension and vibration.
Application Profile
IFI 128 long coupling nuts are essential in applications requiring the extension of threaded rod in structural anchoring, pipe hanging systems, and suspension assemblies. They are also used in heavy machinery to join lead screws or actuator rods, and in fabrication to create adjustable tie rods or linkages. Their use is dictated in scenarios where the connection point must sustain high tensile loads, accommodate adjustment, or act as a durable spacer, making them indispensable in HVAC, electrical, seismic bracing, and industrial maintenance.
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.
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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