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| Categories | Non Standard Fasteners |
|---|---|
| Brand Name: | QBH |
| Model Number: | Ifi128 |
| Certification: | ISO9001 |
| Place of Origin: | CHINA |
| MOQ: | 900kg |
| Price: | Negotiation |
| 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 |
| Company Info. |
| Jiaxing City Qunbang Hardware Co., Ltd |
| Verified Supplier |
| View Contact Details |
| Product List |
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.
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